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1779-49-3

Basic Information
CAS No.: 1779-49-3
Name: Phosphonium,methyltriphenyl-, bromide (1:1)
Molecular Structure:
Molecular Structure of 1779-49-3 (Phosphonium,methyltriphenyl-, bromide (1:1))
Formula: C19H18P·Br
Molecular Weight: 357.22
Synonyms: Methyltriphenylphosphonium bromide;Methyl(triphenyl)phosphonium bromide;Triphenylmethylphosphonium bromide;Phosphonium, methyltriphenyl-, bromide;
EINECS: 217-218-9
Density:
Melting Point: 230-234 °C(lit.)
Boiling Point:
Flash Point: >240°C
Solubility: 400 g/L in water at 25 °C
Appearance: white powder
Hazard Symbols: HarmfulXn,IrritantXi
Risk Codes: 20/21/22-36/37/38
Safety: 36/37-26
Transport Information: UN 1390 4.3/PG 2
PSA: 13.59000
LogP: 0.61430
Synthetic route
1125-88-8

benzaldehyde dimethyl acetal

6399-81-1

triphenylphosphine hydrobromide

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
100%
67-56-1

methanol

603-35-0

triphenylphosphine

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
With hydrogen bromide at 110℃; for 8h;99.2%
With hydrogen bromide at 110℃; for 15h;97%
With hydrogen bromide In water at 120℃; for 22.5h;97%
74-83-9

methyl bromide

603-35-0

triphenylphosphine

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
In benzene at 20℃; for 4h;99%
In benzene for 48h; Ambient temperature;95%
In acetonitrile
74-83-9

methyl bromide

829-85-6

diphenylphosphane

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
In benzene99%
6399-81-1

triphenylphosphine hydrobromide

149-73-5

trimethyl orthoformate

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
at 75℃; for 0.75h; Inert atmosphere; neat (no solvent);99%
at 70℃;70%
1314805-21-4

methyl N-acetyl-α-triphenylphosphoniumglycinate bromide

A

1314805-28-1

(N-Acetylamino)methyltriphenylphosphonium bromide

B

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
Stage #1: methyl N-acetyl-α-triphenylphosphoniumglycinate bromide at 25℃; under 1 - 2 Torr; for 1h;
Stage #2: With triphenylphosphine hydrobromide; triphenylphosphine at 100 - 115℃; for 1h;
A 98.6%
B 87%
603-35-0

triphenylphosphine

149-73-5

trimethyl orthoformate

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
With ammonium bromide at 110℃; for 4h; Sealed tube;96%
With ammonium bromide at 110℃; for 12h;96%
With cis,trans-24-bromotetracos-12-enal ethylene acetal

methyl N-benzoyl-α-triphenylphosphonioglycinate bromide

A

498572-96-6

C20H18N2O6

B

1779-49-3

Methyltriphenylphosphonium bromide

C

28387-29-3

α-(N-benzoylamino)methyltriphenylphosphonium bromide

Conditions
ConditionsYield
Stage #1: methyl N-benzoyl-α-triphenylphosphonioglycinate bromide at 25℃; under 1 - 2 Torr; for 1h;
Stage #2: With triphenylphosphine hydrobromide; triphenylphosphine at 110 - 120℃; for 1h;
A 6.2%
B 81%
C 89.1%
1314805-22-5

Br(1-)*C26H29NO3P(1+)

A

1314805-30-5

Br(1-)*C24H27NOP(1+)

B

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
Stage #1: Br(1-)*C26H29NO3P(1+) at 25℃; under 1 - 2 Torr; for 1h;
Stage #2: With triphenylphosphine hydrobromide; triphenylphosphine at 120℃; for 1.5h;
A 78.7%
B 44.5%
19320-74-2

Se-phenacyldimethylselenonium bromide

603-35-0

triphenylphosphine

A

3878-44-2

Triphenylphosphine selenide

B

19859-29-1

2-(methylselanyl)-1-phenylethan-1-one

C

1779-49-3

Methyltriphenylphosphonium bromide

D

6048-29-9

triphenylphenacylphosphonium bromide

Conditions
ConditionsYield
In benzene for 6h; Heating; Further byproducts given;A 7.3%
B n/a
C 13%
D 73%
19320-74-2

Se-phenacyldimethylselenonium bromide

603-35-0

triphenylphosphine

A

3878-44-2

Triphenylphosphine selenide

B

19859-29-1

2-(methylselanyl)-1-phenylethan-1-one

C

1779-49-3

Methyltriphenylphosphonium bromide

D

6048-29-9

triphenylphenacylphosphonium bromide

E

98-86-2

acetophenone

Conditions
ConditionsYield
In benzene for 6h; Product distribution; Mechanism; Heating;A 7.3%
B n/a
C 13%
D 73%
E n/a

methyl N-benzoyl-α-triphenylphosphonioglycinate bromide

A

1779-49-3

Methyltriphenylphosphonium bromide

B

28387-29-3

α-(N-benzoylamino)methyltriphenylphosphonium bromide

Conditions
ConditionsYield
With triphenylphosphine hydrobromide; triphenylphosphine at 115℃; under 1 - 2 Torr; for 1.5h;A n/a
B 71.5%
Stage #1: methyl N-benzoyl-α-triphenylphosphonioglycinate bromide at 25℃; under 1 - 2 Torr; for 1h;
Stage #2: at 155℃; for 0.5h;
A 55.4%
B 27%
108-86-1

bromobenzene

/PBFRI043-1235/

/PBFRI043-1235/

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
With oct-1-ene; nickel dibromide In tetrahydrofuran Heating;56%
1314805-21-4

methyl N-acetyl-α-triphenylphosphoniumglycinate bromide

A

C10H14N2O6

B

1314805-28-1

(N-Acetylamino)methyltriphenylphosphonium bromide

C

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
Stage #1: methyl N-acetyl-α-triphenylphosphoniumglycinate bromide at 25℃; under 1 - 2 Torr; for 1h;
Stage #2: at 140 - 150℃; for 0.5h;
A 19.4%
B 49.5%
C 37.2%
19493-09-5

Methylenetriphenylphosphorane

A

111441-95-3

(chloromethyl)triphenylphosphonium bromide

B

1779-49-3

Methyltriphenylphosphonium bromide

C

1826-86-4

Dichlormethyl-triphenyl-phosphonium-bromid

Conditions
ConditionsYield
With 1,1-difluorotetrachloroethane In diethyl ether at -78℃; for 0.5h;A 40%
B 35%
C 15%
19493-09-5

Methylenetriphenylphosphorane

A

1779-49-3

Methyltriphenylphosphonium bromide

B

98822-67-4

iodomethyl triphenylphosphonium bromide

C

117747-27-0

Diiodomethyl-triphenyl-phosphonium; bromide

Conditions
ConditionsYield
With 1-chloro-1,1,2,2-tetrafluoro-2-iodo-ethane In diethyl ether at -78℃; for 0.5h;A 31%
B 40%
C 5 % Spectr.
1314805-22-5

Br(1-)*C26H29NO3P(1+)

A

498572-95-5

C16H26N2O6

B

1314805-30-5

Br(1-)*C24H27NOP(1+)

C

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
Stage #1: Br(1-)*C26H29NO3P(1+) at 25℃; under 1 - 2 Torr; for 1h;
Stage #2: at 120℃; for 0.5h;
A 22.9%
B 34.5%
C 21.8%
19493-09-5

Methylenetriphenylphosphorane

A

1034-49-7

(bromomethyl)triphenyl phosphonium bromide

B

1779-49-3

Methyltriphenylphosphonium bromide

C

56506-89-9

tribromomethyltriphenylphosphonium bromide

D

56506-90-2

(dibromomethyl)(triphenyl)phosphonium bromide

Conditions
ConditionsYield
With 1,2-dibromo-1,1,2,2-tetrafluoroethane In diethyl ether at -78℃; for 0.5h;A 18%
B 35 % Spectr.
C 24 % Spectr.
D 13 % Spectr.
100074-67-7

5-bromo-4-methoxy-3-phenylfuran-2(5H)-one

603-35-0

triphenylphosphine

A

74-83-9

methyl bromide

B

1779-49-3

Methyltriphenylphosphonium bromide

C

100074-79-1

2,5-dihydro-2-oxo-3-phenyl-5-triphenylphosphoniumfuran-4-olate

Conditions
ConditionsYield
In benzene for 2h; Product distribution; Mechanism; Heating;A n/a
B 8%
C 65.3 g
In benzene for 2h; Heating;A n/a
B 8%
C 65.3 g

(2-Isobutyryl-vinyl)-triphenylphosphoniumbromid

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
In methanol
6399-81-1

triphenylphosphine hydrobromide

100-66-3

methoxybenzene

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
at 160 - 170℃;
89940-00-1

4-bromo-1,1-dimethoxypentane

603-35-0

triphenylphosphine

1779-49-3

Methyltriphenylphosphonium bromide

558-30-5

2-methyl-1,2-epoxypropane

603-35-0

triphenylphosphine

A

1779-49-3

Methyltriphenylphosphonium bromide

B

53101-88-5

(2-Methyl-propenyl)-triphenyl-phosphonium; bromide

Conditions
ConditionsYield
With hydrogen bromide; phenol 1.) 100 deg C, 24 h; Yield given. Multistep reaction. Yields of byproduct given;
98560-25-9

epoxy-1,2 propyl-2 pentane

603-35-0

triphenylphosphine

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
With hydrogen bromide; phenol 1.) 100 deg C, 24 h; Yield given. Multistep reaction;
84451-53-6

cis-24-bromotetracos-12-enal ethylene acetal

603-35-0

triphenylphosphine

A

1779-49-3

Methyltriphenylphosphonium bromide

B

113309-15-2

cis-23-(dioxolan-2-yl)tricos-12-enyltriphenylphosphonium bromide

Conditions
ConditionsYield
With trimethyl orthoformate
113309-14-1

cis-24-bromotetracos-12-enal ethylene acetal

603-35-0

triphenylphosphine

A

1779-49-3

Methyltriphenylphosphonium bromide

B

113309-16-3

trans-23-(dioxolan-2-yl)tricos-12-enyltriphenylphosphonium bromide

Conditions
ConditionsYield
With trimethyl orthoformate
603-35-0

triphenylphosphine

75-56-9, 16033-71-9

methyloxirane

A

1779-49-3

Methyltriphenylphosphonium bromide

B

3020-30-2

(2-hydroxypropyl)triphenylphosphonium bromide

C

28691-76-1

(E)-prop-1-en-1-yl-triphenylphosphonium bromide

Conditions
ConditionsYield
Product distribution; multistep reaction; variation of temperature and reaction time;
With hydrogen bromide; phenol 1.) 100 deg C, 24 h; Yield given. Multistep reaction. Yields of byproduct given;
603-35-0

triphenylphosphine

2984-50-1

1,2-Epoxyoctane

A

1779-49-3

Methyltriphenylphosphonium bromide

B

((E)-Oct-1-enyl)-triphenyl-phosphonium; bromide

C

56318-76-4, 88518-02-9

((E)-Oct-2-enyl)-triphenyl-phosphonium; bromide

Conditions
ConditionsYield
With hydrogen bromide; phenol 1.) 100 deg C, 24 h; Yield given. Multistep reaction. Yields of byproduct given;
119-61-9

benzophenone

1779-49-3

Methyltriphenylphosphonium bromide

530-48-3

1,1-Diphenylethylene

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With n-butyllithium In tetrahydrofuran
Stage #2: benzophenone In tetrahydrofuran at 20℃; for 6h; Wittig reaction;
100%
Stage #1: Methyltriphenylphosphonium bromide With n-butyllithium In tetrahydrofuran at 0℃; for 1h; Inert atmosphere;
Stage #2: benzophenone In tetrahydrofuran at 20℃; Inert atmosphere;
94%
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In diethyl ether at 20℃; for 0.25h; Inert atmosphere;
Stage #2: benzophenone In diethyl ether at 0℃; for 15h; Inert atmosphere;
87%
19099-93-5

benzyl 4-oxo-1-piperidinecarboxylate

1779-49-3

Methyltriphenylphosphonium bromide

138163-12-9

benzyl 4-methylene-1-piperidinecarboxylate

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 0 - 20℃; for 1h;
Stage #2: benzyl 4-oxo-1-piperidinecarboxylate In tetrahydrofuran at 0 - 20℃;
100%
Stage #1: Methyltriphenylphosphonium bromide With n-butyllithium In tetrahydrofuran at 0℃; for 2h; Wittig Reaction; Inert atmosphere;
Stage #2: benzyl 4-oxo-1-piperidinecarboxylate In tetrahydrofuran at 0 - 20℃; for 4h; Wittig Reaction; Inert atmosphere;
92%
Stage #1: Methyltriphenylphosphonium bromide With lithium hexamethyldisilazane In tetrahydrofuran at 0℃; for 1h;
Stage #2: benzyl 4-oxo-1-piperidinecarboxylate In tetrahydrofuran for 2h;
81%
1779-49-3

Methyltriphenylphosphonium bromide

91547-83-0

(1R,4aS,8aS)-(-)-1,2,3,4,4a,5,6,7,8,8a-decahydro-5,5,8a-trimethyl-2-oxo-1-naphthaleneacetonitrile

124462-80-2

(1S,4aS,8aS)-(+)-1,2,3,4,4a,5,6,7,8,8a-decahydro-5,5,8a-trimethyl-2-methylene-1-naphthaleneacetonitrile

Conditions
ConditionsYield
With sodium amide In tetrahydrofuran at 20℃; for 3.5h; Wittig reaction;100%
With n-butyllithium 1. DME, n-hexane, 0 deg C, 1.5 h 2. DME, 2 h, room temperature; Yield given. Multistep reaction;
With sodium hydride 1.) DMSO, 15 min, 2.) DMSO, 75 deg C, 5 h; Yield given. Multistep reaction;
1779-49-3

Methyltriphenylphosphonium bromide

19493-09-5

Methylenetriphenylphosphorane

Conditions
ConditionsYield
With ammonia; sodium amide100%
With sodium hexamethyldisilazane In diethyl ether Glovebox; Inert atmosphere;98%
With phenyllithium In dibutyl ether at 0 - 20℃; for 3.5h; Inert atmosphere; Glovebox; Schlenk technique;87%
1779-49-3

Methyltriphenylphosphonium bromide

2129-89-7

diphenyl(methyl)phosphine oxide

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With water for 0.5h; Reflux;
Stage #2: With sodium hydroxide for 2h; Reflux;
100%
With sodium hydroxide for 1h; Heating;95%
1779-49-3

Methyltriphenylphosphonium bromide

90-02-8

salicylaldehyde

695-84-1

2-allylphenol

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 20℃; for 2h; Wittig Olefination;
Stage #2: salicylaldehyde In tetrahydrofuran at -78 - 30℃; Wittig Olefination;
100%
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 20℃; for 2h;
Stage #2: salicylaldehyde In tetrahydrofuran at -78 - 20℃;
100%
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 23℃; for 2h;
Stage #2: salicylaldehyde In tetrahydrofuran at -78 - 23℃; for 20h;
98%
1779-49-3

Methyltriphenylphosphonium bromide

6630-33-7

ortho-bromobenzaldehyde

2039-88-5

2-bromostyrene

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 20℃; for 2h; Wittig Olefination;
Stage #2: ortho-bromobenzaldehyde In tetrahydrofuran at 0 - 20℃; for 12h; Wittig Olefination;
100%
With n-butyllithium In tetrahydrofuran99%
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In diethyl ether at 20℃; for 0.25h; Inert atmosphere;
Stage #2: ortho-bromobenzaldehyde In diethyl ether at 0℃; for 15h; Inert atmosphere;
93%
1779-49-3

Methyltriphenylphosphonium bromide

66-77-3

1-naphthaldehyde

826-74-4

1-vinylnaphthalene

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In toluene at 0 - 20℃; for 4.5h;
Stage #2: 1-naphthaldehyde In toluene at 0 - 20℃;
100%
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In toluene at 0 - 20℃; for 4.5h;
Stage #2: 1-naphthaldehyde In toluene at 0 - 20℃;
100%
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In toluene at 0 - 20℃; for 4.5h;
Stage #2: 1-naphthaldehyde In toluene at 0 - 20℃;
100%
14371-10-9

(E)-3-phenylpropenal

1779-49-3

Methyltriphenylphosphonium bromide

16939-57-4

(E)-1-Phenyl-1,3-butadiene

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With n-butyllithium In tetrahydrofuran; hexane at 0℃; for 0.25h; Inert atmosphere;
Stage #2: (E)-3-phenylpropenal In tetrahydrofuran; hexane at 0 - 20℃; Inert atmosphere;
100%
Stage #1: Methyltriphenylphosphonium bromide With n-butyllithium In tetrahydrofuran; cyclohexane at 0℃; for 0.25h;
Stage #2: (E)-3-phenylpropenal In tetrahydrofuran; cyclohexane at 0 - 20℃; for 2h; Wittig olefination;
96%
Stage #1: Methyltriphenylphosphonium bromide In tetrahydrofuran; hexane at 0℃; for 0.25h; Inert atmosphere;
Stage #2: (E)-3-phenylpropenal In tetrahydrofuran; hexane at 0 - 20℃; for 10h; Inert atmosphere;
96%
4746-97-8

cyclohexanedione monoethylene ketal

1779-49-3

Methyltriphenylphosphonium bromide

51656-90-7

8-methylene-1,4-dioxaspiro[4.5]decane

Conditions
ConditionsYield
With potassium tert-butylate In benzene at 25℃; for 1h;100%
Stage #1: Methyltriphenylphosphonium bromide With n-butyllithium In tetrahydrofuran; hexane at -78 - 0℃; for 0.666667h;
Stage #2: cyclohexanedione monoethylene ketal In tetrahydrofuran; hexane at 20℃;
92%
With sodium hydride In dimethyl sulfoxide90%
1779-49-3

Methyltriphenylphosphonium bromide

114077-82-6

4-chloronicotinaldehyde

223573-95-3

4-chloro-3-vinylpyridine

Conditions
ConditionsYield
With lithium diisopropyl amide In tetrahydrofuran100%
With tert.-butyl lithium In diethyl ether; pentane at -78 - 20℃; Wittig Olefination; Inert atmosphere;50%
With n-butyllithium In tetrahydrofuran
1779-49-3

Methyltriphenylphosphonium bromide

289666-94-0

(+)-(3S,4R,5R,6R)-5-benzyloxy-7-tert-butyldiphenylsilyloxy-2,2-dimethyl-3-methoxy-4,6-methylenedioxyheptanal

289667-02-3

(+)-(4S,5R,6R,7R)-6-benzyloxy-8-tert-butyldiphenylsilyloxy-3,3-dimethyl-4-methoxy-5,7-methylenedioxyoctyl-1-ene

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With n-butyllithium In tetrahydrofuran; hexane at 65℃; for 0.25h;
Stage #2: (+)-(3S,4R,5R,6R)-5-benzyloxy-7-tert-butyldiphenylsilyloxy-2,2-dimethyl-3-methoxy-4,6-methylenedioxyheptanal In tetrahydrofuran; hexane at 0℃; for 0.333333h; Wittig reaction;
100%
With n-butyllithium at 0 - 20℃; Wittig reaction;100%
288156-11-6

4,15-diformyl[2.2]paracyclophane

1779-49-3

Methyltriphenylphosphonium bromide

111870-60-1

pseudo-gem-divinyl<2.2>paracyclophane

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 0 - 20℃; Wittig reaction; Inert atmosphere;
Stage #2: 4,15-diformyl[2.2]paracyclophane In tetrahydrofuran Wittig reaction; Inert atmosphere; Cooling with ice;
100%
With n-butyllithium In tetrahydrofuran; hexane at 20℃; for 18h; Wittig reaction;85%
1779-49-3

Methyltriphenylphosphonium bromide

307949-94-6

1-O-Benzyl-2-O-[(3R,7R,11R)-3,7,11,15-tetramethylhexadecanyl]-3-O-[(3R,7R,11S,15S)-15-formyl-3,7,11,15-tetramethylpentadecanyl]-sn-glycerol

307949-95-7

1-O-Benzyl-2-O-[(3R,7R,11R)-3,7,11,15-tetramethylhexadecanyl]-3-O-[(3R,7R,11S,15S)-3,7,11,15-tetramethylheptadec-16-enyl]-sn-glycerol

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With n-butyllithium In hexane at -78 - 20℃; for 0.666667h; Dehydrobromination;
Stage #2: 1-O-Benzyl-2-O-[(3R,7R,11R)-3,7,11,15-tetramethylhexadecanyl]-3-O-[(3R,7R,11S,15S)-15-formyl-3,7,11,15-tetramethylpentadecanyl]-sn-glycerol In tetrahydrofuran; hexane at -78 - -25℃; for 1.25h; Condensation; Wittig reaction; Further stages.;
100%
34041-01-5

4-isopropyl-5-oxo-hexanenitrile

1779-49-3

Methyltriphenylphosphonium bromide

365978-53-6

4-isopropyl-5-methyl-hex-5-enenitrile

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With sodium hydride In dimethyl sulfoxide at 25℃;
Stage #2: 4-isopropyl-5-oxo-hexanenitrile In dimethyl sulfoxide for 1h;
100%
1779-49-3

Methyltriphenylphosphonium bromide

((R)-3,4-Dihydroxy-2,2,3-trimethyl-cyclopentyl)-acetaldehyde

383196-60-9

(S)-4-Allyl-1,5,5-trimethyl-cyclopentane-1,2-diol

Conditions
ConditionsYield
With potassium tert-butylate In tetrahydrofuran for 0.5h; Wittig olefination;100%
1779-49-3

Methyltriphenylphosphonium bromide

310398-06-2

(6R)-(t-butyldimethylsilanyloxymethyl)-(2R)-ethynyl-(3R)-(triisopropylsilanyloxy)-tetrahydropyran-4-one

310398-07-3

(6R)-(t-butyldimethylsilanyloxymethyl)-(2R)-ethynyl-4-methylene-(3S)-(triisopropylsilanoxy)-tetrahydropyran

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With n-butyllithium In tetrahydrofuran; hexane at 20℃; for 1.5h;
Stage #2: (6R)-(t-butyldimethylsilanyloxymethyl)-(2R)-ethynyl-(3R)-(triisopropylsilanyloxy)-tetrahydropyran-4-one In tetrahydrofuran; hexane at 20℃; for 2.5h; Further stages.;
100%
1779-49-3

Methyltriphenylphosphonium bromide

C13H18O

C14H20

Conditions
ConditionsYield
With sodium hydride In dimethyl sulfoxide for 72h;100%
19005-93-7

1H-indol-2-ylcarboxaldehyde

1779-49-3

Methyltriphenylphosphonium bromide

53654-35-6

2-vinyl-1H-indole

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With potassium hexamethylsilazane In tetrahydrofuran; toluene at 20℃; for 0.5h;
Stage #2: 1H-indol-2-ylcarboxaldehyde In tetrahydrofuran; toluene at 20℃; for 2h; Wittig reaction;
100%
Stage #1: Methyltriphenylphosphonium bromide With sodium hexamethyldisilazane In tetrahydrofuran at 20℃; for 1h; Inert atmosphere;
Stage #2: 1H-indol-2-ylcarboxaldehyde In tetrahydrofuran at 20℃; for 14h; Inert atmosphere;
92%
With potassium hexamethylsilazane In tetrahydrofuran; toluene at 23℃; for 3h;90%
1779-49-3

Methyltriphenylphosphonium bromide

478942-83-5

2-isopropoxybiphenyl-3-carbaldehyde

478942-85-7

2-isopropoxy-3-vinyl-1,1'-biphenyl

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 22℃; for 2h;
Stage #2: 2-isopropoxybiphenyl-3-carbaldehyde In tetrahydrofuran at -78 - 22℃; Wittig olefination;
100%
Stage #1: Methyltriphenylphosphonium bromide With sodium t-butanolate In tetrahydrofuran at 20℃; for 1h; Inert atmosphere;
Stage #2: 2-isopropoxybiphenyl-3-carbaldehyde In tetrahydrofuran at -78 - 20℃; Inert atmosphere;
99%
With potassium tert-butylate In diethyl ether at 0℃; Wittig olefination;88%
Stage #1: Methyltriphenylphosphonium bromide With sodium t-butanolate In diethyl ether at 20℃; for 0.5h; Wittig Olefination; Inert atmosphere;
Stage #2: 2-isopropoxybiphenyl-3-carbaldehyde In diethyl ether at 20℃; for 0.5h; Wittig Olefination; Inert atmosphere;
55%
With potassium tert-butylate In diethyl ether at 0℃; for 0.166667h; Wittig reaction;
1779-49-3

Methyltriphenylphosphonium bromide

519033-40-0

3-formyl-1H-indole-2-carboxylic acid (but-3-enyl)amide

519033-41-1

3-vinyl-1H-indole-2-carboxylic acid (but-3-enyl)amide

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With n-butyllithium In tetrahydrofuran; hexane at 0 - 20℃; for 3h;
Stage #2: 3-formyl-1H-indole-2-carboxylic acid (but-3-enyl)amide In tetrahydrofuran; hexane at 20℃; for 2h;
100%
1779-49-3

Methyltriphenylphosphonium bromide

481656-25-1

(1S,4aS,8aR)-1α-(2-methoxybenzyl)-1β,2β,4aβ-trimethyl-1,2,3,4,4a,7,8,8aα-octahydronaphthalene-5(6H)-one

481656-15-9

(1S,4aS,8aR)-1α-(2-methoxybenzyl)-1β,2β,4aβ-trimethyl-5-(methylene)decahydronaphthalene

Conditions
ConditionsYield
With potassium tert-butylate In benzene Heating;100%
With potassium tert-butylate In benzene for 12h; Wittig reaction; Heating;100%
With potassium tert-butylate In benzene for 12h; Wittig reaction; heating;100%
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In benzene for 2h; Wittig methylenation; Inert atmosphere; Reflux;
Stage #2: (1S,4aS,8aR)-1α-(2-methoxybenzyl)-1β,2β,4aβ-trimethyl-1,2,3,4,4a,7,8,8aα-octahydronaphthalene-5(6H)-one In benzene for 12h; Wittig methylenation; Inert atmosphere; Reflux;
100%
1779-49-3

Methyltriphenylphosphonium bromide

C91H108O17

C92H110O16

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide; C91H108O17 With sodium hexamethyldisilazane In tetrahydrofuran at 0℃; for 1h; Wittig reaction;
Stage #2: Methyltriphenylphosphonium bromide With sodium hexamethyldisilazane In tetrahydrofuran at 0℃; for 0.5h; Wittig reaction; Further stages.;
100%
Stage #1: Methyltriphenylphosphonium bromide With sodium hexamethyldisilazane In tetrahydrofuran at 0℃; for 0.333333h;
Stage #2: C91H108O17 In tetrahydrofuran at 0℃; for 0.5h;
1779-49-3

Methyltriphenylphosphonium bromide

107811-48-3

2-isopropoxy-4-methoxybenzene-1-carboaldehyde

1-methoxy-5-isopropoxy-4-vinylbenzene

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 22℃; for 2h;
Stage #2: 2-isopropoxy-4-methoxybenzene-1-carboaldehyde In tetrahydrofuran at -78 - 22℃; Wittig olefination;
100%
1779-49-3

Methyltriphenylphosphonium bromide

2-isopropoxy-5-methoxybenzaldehyde

623902-72-7

2-isopropoxy-5-methoxy-1-vinylbenzene

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 22℃; for 2h;
Stage #2: 2-isopropoxy-5-methoxybenzaldehyde In tetrahydrofuran at -78 - 22℃; Wittig olefination;
100%
1779-49-3

Methyltriphenylphosphonium bromide

(3aR,5R,6S,8aR,9R,9aS)-5-Hydroxy-5-isopropenyl-9-isopropyl-2,2,6,8a-tetramethyl-3a,5,6,7,8,8a,9,9a-octahydro-1,3-dioxa-cyclopenta[a]azulene-6-carbaldehyde

(3aR,5R,6R,8aR,9R,9aS)-5-Isopropenyl-9-isopropyl-2,2,6,8a-tetramethyl-6-vinyl-3a,5,6,7,8,8a,9,9a-octahydro-1,3-dioxa-cyclopenta[a]azulen-5-ol

Conditions
ConditionsYield
With potassium tert-butylate In tetrahydrofuran Wittig reaction;100%
1779-49-3

Methyltriphenylphosphonium bromide

(3aS,4S,7aR)-4-Benzyloxymethyl-2,3,3a,4,5,7a-hexahydro-benzofuran-2-ol

654680-31-6

(1R,5S,6S)-5-benzyloxymethyl-6-(2-propenyl)-2-cyclohex-1-ol

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With sodium hexamethyldisilazane In tetrahydrofuran for 0.25h;
Stage #2: (3aS,4S,7aR)-4-Benzyloxymethyl-2,3,3a,4,5,7a-hexahydro-benzofuran-2-ol In tetrahydrofuran at -78℃; for 0.333333h; Wittig reaction;
Stage #3: In tetrahydrofuran for 2h; Wittig reaction; Heating;
100%
1779-49-3

Methyltriphenylphosphonium bromide

749924-32-1

(E)-3-[(Z)-(2R,8S,9R)-8-(tert-Butyl-diphenyl-silanyloxy)-9-(tert-butyl-diphenyl-silanyloxymethyl)-2,3,4,7,8,9-hexahydro-oxonin-2-yl]-2-methyl-propenal

749924-33-2

(Z)-(2R,3S,9R)-3-(tert-Butyl-diphenyl-silanyloxy)-2-(tert-butyl-diphenyl-silanyloxymethyl)-9-((E)-2-methyl-buta-1,3-dienyl)-2,3,4,7,8,9-hexahydro-oxonine

Conditions
ConditionsYield
With n-butyllithium at -78℃; for 2h; Wittig methylenation;100%
31477-10-8

2,2'-diformyl-5,5',6,6'-tetramethoxybiphenyl

1779-49-3

Methyltriphenylphosphonium bromide

790220-94-9

2,2'-divinyl-5,5',6,6'-tetramethoxybiphenyl

Conditions
ConditionsYield
With n-butyllithium In tetrahydrofuran; hexane at 20℃; for 24h; Wittig reaction;100%
1779-49-3

Methyltriphenylphosphonium bromide

247191-04-4

(2R,3R,4S,5R)-2,3-O-isopropylidene-2,3-dihydroxy-4,5-epoxycyclopentanone

247191-05-5

(2S,3S,4S,5R)-1-methylene-2,3-O-isopropylidene-2,3-dihydroxy-4,5-epoxycyclopentane

Conditions
ConditionsYield
With sodium amide In tetrahydrofuran at 25℃; for 1h;100%
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    Methyltriphenylphosphonium bromide CAS:1779-49-3

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Specification

The Phosphonium,methyltriphenyl-, bromide (1:1), with the CAS registry number 1779-49-3, is also known as Triphenylmethylphosphonium bromide. It belongs to the product categories of Phosphonium Compounds; Synthetic Organic Chemistry; Wittig & Horner-Emmons Reaction; Wittig Reaction; C-C Bond Formation; Olefination; Wittig Reagents; Organophosphorus compound. Its EINECS number is 217-218-9. This chemical's molecular formula is C19H18P·Br and molecular weight is 357.22. What's more, its systematic name is Methyl(triphenyl)phosphonium bromide. This chemical is stable at common pressure and temperature, and it should be sealed and stored in a cool and dry place. Moreover, it should be protected from heat and fire.

Preparation of Phosphonium,methyltriphenyl-, bromide (1:1): this chemical can be prepared by triphenylphosphane and bromomethane at the ambient temperature. This reaction will need solvent benzene with the reaction time of 2 days. The yield is about 95%.

Phosphonium,methyltriphenyl-, bromide (1:1) can be prepared by triphenylphosphane and bromomethane at the ambient temperature

Uses of Phosphonium,methyltriphenyl-, bromide (1:1): it can be used to produce 9-isopropenyl-phenanthrene. It will need reagent NaNH2 and solvent tetrahydrofuran. The yield is about 94%.

Phosphonium,methyltriphenyl-, bromide (1:1) can be used to produce 9-isopropenyl-phenanthrene

When you are using this chemical, please be cautious about it as the following:
This chemical is harmful by inhalation, in contact with skin and if swallowed. It is irritating to eyes, respiratory system and skin and can cause burns. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing and gloves.

You can still convert the following datas into molecular structure:
(1)SMILES: [Br-].c1(ccccc1)[P+](c2ccccc2)(c3ccccc3)C
(2)Std. InChI: InChI=1S/C19H18P.BrH/c1-20(17-11-5-2-6-12-17,18-13-7-3-8-14-18)19-15-9-4-10-16-19;/h2-16H,1H3;1H/q+1;/p-1
(3)Std. InChIKey: LSEFCHWGJNHZNT-UHFFFAOYSA-M