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High purity 762-42-5 dimethyl acetylenedicarboxylate
Cas No: 762-42-5
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High quality Dimethyl Acetylenedicarboxylate supplier in China
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Acetylenedicarboxylic acid dimethyl ester
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High Quality Oled CAS 762-42-5 Dimethyl acetylenedicarboxylate
Cas No: 762-42-5
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Factory Supply Dimethyl butynedioate
Cas No: 762-42-5
No Data 1 1 Ality Chemical Corporation Contact Supplier
2-butynedioic acid dimethyl ester
Cas No: 762-42-5
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Dimethyl acetylenedicarboxylate
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USD $ 3.0-3.0 / Kilogram 1 Kilogram 1-10 Metric Ton/Month Dayang Chem (Hangzhou) Co.,Ltd. Contact Supplier
Dimethyl acetylenedicarboxylate CAS:762-42-5
Cas No: 762-42-5
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TIANFUCHEM--762-42-5--Dimethyl acetylenedicarboxylate factory price
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Manufacturer supply CAS 762-42-5 with best quality
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762-42-5 Usage

Chemical Properties

clear colorless to light yellow liquid

Synthesis Reference(s)

Tetrahedron Letters, 35, p. 6243, 1994 DOI: 10.1016/S0040-4039(00)73402-2
InChI:InChI=1/C6H6O4/c1-9-5(7)3-4-6(8)10-2/h1-2H3

762-42-5 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Alfa Aesar (45131)  Dimethyl acetylenedicarboxylate, 95%    762-42-5 25g 726.0CNY Detail
Alfa Aesar (45131)  Dimethyl acetylenedicarboxylate, 95%    762-42-5 100g 2191.0CNY Detail
Alfa Aesar (45131)  Dimethyl acetylenedicarboxylate, 95%    762-42-5 500g 10835.0CNY Detail
Alfa Aesar (A11437)  Dimethyl acetylenedicarboxylate, 98%    762-42-5 25g 735.0CNY Detail
Alfa Aesar (A11437)  Dimethyl acetylenedicarboxylate, 98%    762-42-5 100g 2498.0CNY Detail
Alfa Aesar (A11437)  Dimethyl acetylenedicarboxylate, 98%    762-42-5 500g 10004.0CNY Detail

762-42-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name Dimethyl acetylenedicarboxylate

1.2 Other means of identification

Product number -
Other names 2-Butynedioic acid, dimethyl ester

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:762-42-5 SDS

762-42-5Synthetic route

methanol
67-56-1

methanol

Acetylenedicarboxylic acid
142-45-0

Acetylenedicarboxylic acid

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Conditions
ConditionsYield
With toluene-4-sulfonic acid In 1,2-dichloro-ethane; toluene Reflux;93%
With sulfuric acid at 20℃; for 24h; Inert atmosphere;88%
With sulfuric acid
With toluene-4-sulfonic acid
trans-2,3-dibromobutenedioic acid dimethyl ester
1114-20-1, 62675-22-3, 116631-94-8

trans-2,3-dibromobutenedioic acid dimethyl ester

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Conditions
ConditionsYield
With zinc In tetrahydrofuran for 2h; Heating;93%
With zinc In tetrahydrofuran for 2h; Heating; Yield given;
(C5H5)2VC2(CO2CH3)2

(C5H5)2VC2(CO2CH3)2

A

bis(cyclopentadienyl)vanadium dichloride
12083-48-6

bis(cyclopentadienyl)vanadium dichloride

B

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Conditions
ConditionsYield
With chlorine In tetrachloromethaneA 68%
B 37%
With Cl2 In tetrachloromethaneA 68%
B 37%
3-methoxycarbonyl-5-pyrazolinone
86625-25-4

3-methoxycarbonyl-5-pyrazolinone

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Conditions
ConditionsYield
With [bis(acetoxy)iodo]benzene In methanol 1.) -23 deg C, 45 min; 2.) rt, 1 h;59%
dimethyl 2-oxo-3-triphenylphosphoranylidenebutanedioate
64995-84-2

dimethyl 2-oxo-3-triphenylphosphoranylidenebutanedioate

A

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

B

Triphenylphosphine oxide
791-28-6

Triphenylphosphine oxide

Conditions
ConditionsYield
at 500℃; under 0.01 Torr;A 59%
B n/a
at 500℃; under 0.001 - 0.1 Torr; for 1h;A 59 % Spectr.
B n/a
methyl 7-oxo-2-phenyl-7H-[1,2,4]triazolo[3,2-b][1,3]thiazine-5-carboxylate
68827-52-1

methyl 7-oxo-2-phenyl-7H-[1,2,4]triazolo[3,2-b][1,3]thiazine-5-carboxylate

methanol
67-56-1

methanol

A

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

B

3-phenyl-4,5-dihydro-1H-1,2,4-triazole-5-thione
3414-94-6

3-phenyl-4,5-dihydro-1H-1,2,4-triazole-5-thione

Conditions
ConditionsYield
Stage #1: methyl 7-oxo-2-phenyl-7H-[1,2,4]triazolo[3,2-b][1,3]thiazine-5-carboxylate With potassium hydroxide In methanol; water for 48h;
Stage #2: methanol at 20℃; for 96h;
A n/a
B 59%
(Z)-1-hydroperoxy-N-[(Z)-3-(methoxycarbonyl)-2-propenylidene]cyclohexylamine N-oxide
183586-23-4

(Z)-1-hydroperoxy-N-[(Z)-3-(methoxycarbonyl)-2-propenylidene]cyclohexylamine N-oxide

A

Maleinaldehydsaeure-methylester
57314-32-6

Maleinaldehydsaeure-methylester

B

cyclohexanone
108-94-1

cyclohexanone

C

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

D

(Z)-4-[(E)-Hydroxyimino]-but-2-enoic acid methyl ester
183813-49-2

(Z)-4-[(E)-Hydroxyimino]-but-2-enoic acid methyl ester

Conditions
ConditionsYield
In benzene for 0.5h; Heating; Further byproducts given;A 32%
B 6%
C 32%
D n/a
(Z)-1-hydroperoxy-N-[(Z)-3-(methoxycarbonyl)-2-propenylidene]cyclohexylamine N-oxide
183586-23-4

(Z)-1-hydroperoxy-N-[(Z)-3-(methoxycarbonyl)-2-propenylidene]cyclohexylamine N-oxide

A

cyclohexanone
108-94-1

cyclohexanone

B

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

C

(Z)-anti-methyl 4-(hydroxyimino)but-2-enoate
183586-28-9

(Z)-anti-methyl 4-(hydroxyimino)but-2-enoate

D

(Z)-4-[(E)-Hydroxyimino]-but-2-enoic acid methyl ester
183813-49-2

(Z)-4-[(E)-Hydroxyimino]-but-2-enoic acid methyl ester

Conditions
ConditionsYield
In benzene for 0.5h; Heating; Further byproducts given. Title compound not separated from byproducts;A 6%
B 32%
C n/a
D n/a
(1S,3aR)-1H-1,3a-Etheno-azulene-9,10-dicarboxylic acid dimethyl ester
58150-95-1

(1S,3aR)-1H-1,3a-Etheno-azulene-9,10-dicarboxylic acid dimethyl ester

A

dimethyl heptalene-4,5-dicarboxylate
58150-88-2

dimethyl heptalene-4,5-dicarboxylate

B

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

C

azulene
275-51-4

azulene

Conditions
ConditionsYield
In (2)H8-toluene at 60℃; under 750.06 Torr; for 30h; thermolyse, other pressure;
2-(2-thienyl)-4,5-dimethoxycarbonyl-1,3-dithiole
116935-20-7

2-(2-thienyl)-4,5-dimethoxycarbonyl-1,3-dithiole

methyl iodide
74-88-4

methyl iodide

A

thiophene-2-carbodithioic acid methyl ester
2168-83-4

thiophene-2-carbodithioic acid methyl ester

B

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Conditions
ConditionsYield
With n-butyllithium 1) 2 h -30 deg C THF hexane, 2) 2 h; Multistep reaction;
Bicyclo[2.2.2]octa-2,5,7-triene-2,3,5,6-tetracarboxylic acid tetramethyl ester

Bicyclo[2.2.2]octa-2,5,7-triene-2,3,5,6-tetracarboxylic acid tetramethyl ester

A

phthalic acid dimethyl ester
131-11-3

phthalic acid dimethyl ester

B

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Conditions
ConditionsYield
With base
methanol
67-56-1

methanol

dibromomaleic acid
608-37-7

dibromomaleic acid

A

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

B

dimethylfumarate
624-49-7

dimethylfumarate

C

Dimethyl succinate
106-65-0

Dimethyl succinate

Conditions
ConditionsYield
With samarium; sulfuric acid 1) MeOH, 24 h, RT, 2) reflux; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;
methanol
67-56-1

methanol

meso-2,3-dibromosuccinic acid
916065-46-8

meso-2,3-dibromosuccinic acid

A

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

B

dimethylfumarate
624-49-7

dimethylfumarate

C

Dimethyl succinate
106-65-0

Dimethyl succinate

Conditions
ConditionsYield
With samarium; sulfuric acid 1) MeOH, 24 h, Rt, 2) reflux; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;
Dimethyl 1-(2-chlorophenyl)-7-oxabicyclo[2.2.1]heptadiene-2,3-dicarboxylate
194220-96-7

Dimethyl 1-(2-chlorophenyl)-7-oxabicyclo[2.2.1]heptadiene-2,3-dicarboxylate

A

2-(2-chlorophenyl)furan
38527-56-9

2-(2-chlorophenyl)furan

B

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

C

2'-Chloro-4-hydroxy-biphenyl-2,3-dicarboxylic acid dimethyl ester

2'-Chloro-4-hydroxy-biphenyl-2,3-dicarboxylic acid dimethyl ester

D

5-[1-(2-Chloro-phenyl)-1-hydroxy-meth-(Z)-ylidene]-cyclopenta-1,3-diene-1,2-dicarboxylic acid dimethyl ester

5-[1-(2-Chloro-phenyl)-1-hydroxy-meth-(Z)-ylidene]-cyclopenta-1,3-diene-1,2-dicarboxylic acid dimethyl ester

Conditions
ConditionsYield
With hydrogenchloride; water In dichloromethane for 24h; Product distribution; Further Variations:; Reagents; Solvents; Temperatures; retro-Diels-Alder reaction; Heating;
methanol
67-56-1

methanol

monopotassium salt of/the/ acetylenedicarboxylic acid

monopotassium salt of/the/ acetylenedicarboxylic acid

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Conditions
ConditionsYield
With sulfuric acid at 25℃;
With sulfuric acid
methanol
67-56-1

methanol

monopotassium-salt of/the/ butynedioic acid

monopotassium-salt of/the/ butynedioic acid

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Conditions
ConditionsYield
With sulfuric acid; sulfur trioxide; 1,2-dichloro-ethane
methanol
67-56-1

methanol

sulfuric acid
7664-93-9

sulfuric acid

Acetylenedicarboxylic acid
142-45-0

Acetylenedicarboxylic acid

A

2-methoxyfumaric acid
2215-12-5

2-methoxyfumaric acid

B

2-methoxy-2-butenedioic acid dimethyl ester
26579-97-5

2-methoxy-2-butenedioic acid dimethyl ester

C

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Conditions
ConditionsYield
Veresterung;
tetrakis(2-bromobenzoato)bis(dimethyl acetylenedicarboxylate)tetracopper(I)
121619-92-9

tetrakis(2-bromobenzoato)bis(dimethyl acetylenedicarboxylate)tetracopper(I)

A

tetrakis(2-bromobenzoato)(dimethyl acetylenedicarboxylate)tetracopper(I)

tetrakis(2-bromobenzoato)(dimethyl acetylenedicarboxylate)tetracopper(I)

B

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Conditions
ConditionsYield
In (2)H8-toluene N2, NMR tube, T: 213 - 293 K; (1)H NMR spectroscopy;
tetrakis(2-chlorobenzoato)bis(dimethyl acetylenedicarboxylate)tetracopper(I)
121619-91-8

tetrakis(2-chlorobenzoato)bis(dimethyl acetylenedicarboxylate)tetracopper(I)

A

tetrakis(2-chlorobenzoato)(dimethyl acetylenedicarboxylate)tetracopper(I)

tetrakis(2-chlorobenzoato)(dimethyl acetylenedicarboxylate)tetracopper(I)

B

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Conditions
ConditionsYield
In (2)H8-toluene N2, NMR tube, T: 213 - 293 K; (1)H NMR spectroscopy;
tetrakisbenzoatobis(dimethyl acetylenedicarboxylate)tetracopper(I)
121619-90-7

tetrakisbenzoatobis(dimethyl acetylenedicarboxylate)tetracopper(I)

A

tetrakisbenzoato(dimethyl acetylenedicarboxylate)tetracopper(I)

tetrakisbenzoato(dimethyl acetylenedicarboxylate)tetracopper(I)

B

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Conditions
ConditionsYield
In (2)H8-toluene N2, NMR tube, T: 213 - 298 K; (1)H NMR spectroscopy;
1,1,2-tricarbonyl-μ-(dimethyl 2-butynedioate-μ-C(2),μ-C(3)3)(2-3-η-dimethyl 2-butynedioate)-μ-(1-5:1'-5'-.eta-fulvalene)-dimolybdenum (Mo-Mo)

1,1,2-tricarbonyl-μ-(dimethyl 2-butynedioate-μ-C(2),μ-C(3)3)(2-3-η-dimethyl 2-butynedioate)-μ-(1-5:1'-5'-.eta-fulvalene)-dimolybdenum (Mo-Mo)

A

(η5:η5-fulvalene)tetracarbonyl(dimethyl ethynedicarboxylate)dimolybdenum

(η5:η5-fulvalene)tetracarbonyl(dimethyl ethynedicarboxylate)dimolybdenum

B

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Conditions
ConditionsYield
In toluene heating in toluene at 110°C; alkyne detected by NMR;
Pd2((C6H5)4P2CH2)2C2(CO2CH3)2I2
77590-29-5

Pd2((C6H5)4P2CH2)2C2(CO2CH3)2I2

A

Pd2I2(μ-bis(diphenylphosphino)methane)2
67477-87-6

Pd2I2(μ-bis(diphenylphosphino)methane)2

B

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Conditions
ConditionsYield
In dichloromethane Irradiation (UV/VIS); Exposure of a CH2Cl2-soln. to light from Hg lamp;;
1,3-bis(azidopropyl)tetramethyldisiloxane

1,3-bis(azidopropyl)tetramethyldisiloxane

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

dimethyl (2E)-2,3-diiodo-2-butenedioate
18434-84-9

dimethyl (2E)-2,3-diiodo-2-butenedioate

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Conditions
ConditionsYield
With tetra-(n-butyl)ammonium iodide In nitrobenzene-d5 at 45℃; for 40h; Inert atmosphere; Darkness;
dimethyl 2,3-dibromobutane-1,4-dicarboxylate
51575-86-1

dimethyl 2,3-dibromobutane-1,4-dicarboxylate

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Conditions
ConditionsYield
With potassium hydroxide In ethanol for 4h; Time; Reflux;
N-Methylpyrrole
96-54-8

N-Methylpyrrole

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

1-methyl-1,7a-dihydro-indole-2,3,3a,4-tetracarboxylic acid tetramethyl ester
1444-11-7

1-methyl-1,7a-dihydro-indole-2,3,3a,4-tetracarboxylic acid tetramethyl ester

Conditions
ConditionsYield
In dichloromethane at 40℃; under 11250900 Torr; for 6h;100%
dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

hexamethyl benzenehexacarboxylate
6237-59-8

hexamethyl benzenehexacarboxylate

Conditions
ConditionsYield
[Rh(CO)Cl(1,2-bis(diphenylphosphino)ethane)] In tetrahydrofuran-d8 at 65℃; for 1h; cyclotrimerization;100%
With bis(1,5-cyclooctadiene)rhodium(I) tetrafluoroborate; (R)-(+)-2,2'-bis(diphenylphosphanyl)-5,5',6,6',7,7',8,8'-octahydro-1,1'-binaphthyl In dichloromethane at 20℃; for 1h;100%
Rh[C60(PhCH2)2Ph](cod) In 1,2-dichloro-benzene at 60℃; for 24h;99%
morpholine
110-91-8

morpholine

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

dimethyl (Z)-2-(morpholino)-2-butenedioate
24432-42-6

dimethyl (Z)-2-(morpholino)-2-butenedioate

Conditions
ConditionsYield
at 20℃; for 0.05h; Michael addition;100%
at 100℃; for 3h;
With water; potassium carbonate at 20℃; stereoselective reaction;
p-toluidine
106-49-0

p-toluidine

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

dimethyl (Z)-N-(4-methylphenyl)aminofumarate
24559-80-6

dimethyl (Z)-N-(4-methylphenyl)aminofumarate

Conditions
ConditionsYield
at 20℃; for 0.133333h; Michael addition;100%
In benzene at 5 - 10℃;70%
In diethyl ether
diethylamine
109-89-7

diethylamine

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

dimethyl (2E)-2-(diethylamino)but-2-enedioate
996-85-0

dimethyl (2E)-2-(diethylamino)but-2-enedioate

Conditions
ConditionsYield
In water at 20℃; for 2h; Michael-type addition;100%
In diethyl ether
2-amino-phenol
95-55-6

2-amino-phenol

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

(2Z)-[2-oxo-2H-1,4-benzoxazine-3(4H)-ylidene]acetic acid methyl ester
66628-73-7

(2Z)-[2-oxo-2H-1,4-benzoxazine-3(4H)-ylidene]acetic acid methyl ester

Conditions
ConditionsYield
at 20℃; for 0.0666667h; Michael addition;100%
In neat (no solvent) at 20℃; for 0.166667h; regioselective reaction;98%
In ethanol at 0℃; for 3h;94%
propylamine
107-10-8

propylamine

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

dimethyl (Z)-2-(n-propylamino)fumarate
24559-78-2

dimethyl (Z)-2-(n-propylamino)fumarate

Conditions
ConditionsYield
at 20℃; for 0.05h; Michael addition;100%
In diethyl ether
dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

N-methylaniline
100-61-8

N-methylaniline

2-(methylphenylamino)but-2-enedioic acid dimethyl ester
125735-97-9

2-(methylphenylamino)but-2-enedioic acid dimethyl ester

Conditions
ConditionsYield
In water at 20℃; for 2h; Michael-type addition;100%
In water at 20℃;71%
In water at 0 - 20℃; for 2h;69%
In diethyl ether
piperidine
110-89-4

piperidine

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

1,4-dimethyl (2E)-2-(piperidin-1-yl)but-2-enedioate
4596-77-4

1,4-dimethyl (2E)-2-(piperidin-1-yl)but-2-enedioate

Conditions
ConditionsYield
In water at 20℃; for 2h; Michael-type addition;100%
With silica gel for 0.0833333h; Neat (no solvent); optical yield given as %de; chemoselective reaction;82%
In 1,4-dioxane at 80℃; for 10h;60%
In diethyl ether
In diethyl ether at 0℃;
morpholine
110-91-8

morpholine

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

dimethyl α-morpholinomaleate
26138-59-0

dimethyl α-morpholinomaleate

Conditions
ConditionsYield
In water at 20℃; for 2h; Michael-type addition;100%
In diethyl ether for 24h; Ambient temperature;86%
With silica gel for 0.0833333h; Neat (no solvent); optical yield given as %de; chemoselective reaction;84%
In diethyl ether for 15h; Ambient temperature;70%
2,5-dimethylfuran
625-86-5

2,5-dimethylfuran

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

dimethyl 1,4-dimethyl-7-oxabicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylate
18063-93-9

dimethyl 1,4-dimethyl-7-oxabicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylate

Conditions
ConditionsYield
In 1,4-dioxane at 103℃;100%
In dichloromethane under 7500600 Torr; for 20h; Ambient temperature;95%
In 1,4-dioxane at 101℃; for 17.5h;81%
2,5-dimethylfuran
625-86-5

2,5-dimethylfuran

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

dimethyl 1,4-dimethyl-7-oxabicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylate
18063-93-9

dimethyl 1,4-dimethyl-7-oxabicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylate

Conditions
ConditionsYield
at 100℃; for 21h;100%
at 100℃; for 2h; Sealed tube;78%
In 1,4-dioxane at 100℃; for 24h; Diels-Alder reaction;
In toluene at 150℃; Diels-Alder reaction; Microwave irradiation;
(E)-2H-chromen-2-one oxime

(E)-2H-chromen-2-one oxime

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

dimethyl (2H-<1>benzopyran-2-ylidenaminoxy)butenedioate

dimethyl (2H-<1>benzopyran-2-ylidenaminoxy)butenedioate

Conditions
ConditionsYield
With triethylamine In dichloromethane Ambient temperature;100%
1-methyl-cis-2-benzoyl-3-phenylaziridine
6476-40-0

1-methyl-cis-2-benzoyl-3-phenylaziridine

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

(E)-2-[((E)-1-Benzoyl-2-phenyl-vinyl)-methyl-amino]-but-2-enedioic acid dimethyl ester
113405-17-7

(E)-2-[((E)-1-Benzoyl-2-phenyl-vinyl)-methyl-amino]-but-2-enedioic acid dimethyl ester

Conditions
ConditionsYield
for 24h; Ambient temperature;100%
2-Hydroxy-4-methylanilin
2835-98-5

2-Hydroxy-4-methylanilin

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

(Z)-3-methoxycarbonylmethylene-7-methyl-3,4-dihydro-2H-1,4-benzoxazin-2-one
104827-36-3

(Z)-3-methoxycarbonylmethylene-7-methyl-3,4-dihydro-2H-1,4-benzoxazin-2-one

Conditions
ConditionsYield
at 20℃; for 0.0333333h; Michael addition;100%
In ethanol at 0℃; for 3h;92%
In methanol Ambient temperature;88.89%
1,2-diamino-benzene
95-54-5

1,2-diamino-benzene

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

(Z)-methyl 2-(3-oxo-3,4-dihydroquinoxalin-2(1H)-ylidene)acetate
53700-46-2

(Z)-methyl 2-(3-oxo-3,4-dihydroquinoxalin-2(1H)-ylidene)acetate

Conditions
ConditionsYield
at 20℃; for 0.0166667h; Michael addition;100%
for 0.0833333h; microwave irradiation;90%
In methanol Heating;
at 20℃; for 0.0833333h; Milling;
3-amino-4-hydroxytoluene
95-84-1

3-amino-4-hydroxytoluene

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

(Z)-3-methoxycarbonylmethylene-6-methyl-3,4-dihydro-2H-1,4-benzoxazin-2-one
70917-48-5

(Z)-3-methoxycarbonylmethylene-6-methyl-3,4-dihydro-2H-1,4-benzoxazin-2-one

Conditions
ConditionsYield
at 20℃; for 0.0333333h; Michael addition;100%
In ethanol at 0℃; for 3h;93%
In methanol Ambient temperature;92.27%
1,1-dimethoxyethylene
922-69-0

1,1-dimethoxyethylene

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

dimethyl 3,3-dimethoxycyclobutene-1,2-dicarboxylate
142645-55-4

dimethyl 3,3-dimethoxycyclobutene-1,2-dicarboxylate

Conditions
ConditionsYield
In chloroform at 18℃; for 3h;100%
In toluene at 28 - 32℃; for 15h;93%
In acetonitrile at 18 - 22℃; for 3h;53%
hydrogen cyanide
74-90-8

hydrogen cyanide

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

hexamethyl benzenehexacarboxylate
6237-59-8

hexamethyl benzenehexacarboxylate

Conditions
ConditionsYield
With triphenyl phosphite; tetrakis(triphenylphosphite)nickel(0); zinc(II) chloride In toluene at 60℃; for 0.5h;100%
1,1-dimethoxy-propene
5634-52-6

1,1-dimethoxy-propene

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

3,3-Dimethoxy-4-methyl-cyclobut-1-ene-1,2-dicarboxylic acid dimethyl ester
142645-56-5

3,3-Dimethoxy-4-methyl-cyclobut-1-ene-1,2-dicarboxylic acid dimethyl ester

Conditions
ConditionsYield
In chloroform at 18℃; for 3h;100%
In acetonitrile at 18 - 22℃; for 3h; Product distribution; Mechanism; other solvents, other temperatures, other times, other acetylenic ester; other 1,1-dimethoxyalkenes;58%
In acetonitrile at 18 - 22℃; for 3h;58%
1,1-dimethoxy-but-1-ene
99115-93-2

1,1-dimethoxy-but-1-ene

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

4-Ethyl-3,3-dimethoxy-cyclobut-1-ene-1,2-dicarboxylic acid dimethyl ester

4-Ethyl-3,3-dimethoxy-cyclobut-1-ene-1,2-dicarboxylic acid dimethyl ester

Conditions
ConditionsYield
In chloroform at 18℃; for 3h;100%
tris(methylseleno)borane
29634-51-3

tris(methylseleno)borane

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

A

(Z)-2-Methylselanyl-but-2-enedioic acid dimethyl ester
132330-33-7

(Z)-2-Methylselanyl-but-2-enedioic acid dimethyl ester

B

(E)-2,3-Bis-methylselanyl-but-2-enedioic acid dimethyl ester
82849-75-0

(E)-2,3-Bis-methylselanyl-but-2-enedioic acid dimethyl ester

Conditions
ConditionsYield
In dichloromethane for 0.5h; Ambient temperature;A 100%
B n/a
In dichloromethane for 0.5h; Ambient temperature; Yields of byproduct given;A 75%
B n/a
Tris(phenylseleno)borane
29680-62-4

Tris(phenylseleno)borane

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Phenylselenoethylendicarbonsaeure-dimethylester
15642-80-5

Phenylselenoethylendicarbonsaeure-dimethylester

Conditions
ConditionsYield
In dichloromethane for 0.5h; Ambient temperature;100%
ethyl N-hydroxyiminobenzoate
2446-52-8

ethyl N-hydroxyiminobenzoate

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

ethyl O-(2'-ethoxycarbonylvinyl)-N-hydroxyiminobenzoate
139172-68-2

ethyl O-(2'-ethoxycarbonylvinyl)-N-hydroxyiminobenzoate

Conditions
ConditionsYield
With triethylamine In dichloromethane Ambient temperature;100%
2-(methylamino)-N'-(2-phenylacetyl)benzohydrazide
30907-73-4

2-(methylamino)-N'-(2-phenylacetyl)benzohydrazide

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

2-Methoxycarbonylmethyl-1-methyl-4-oxo-3-phenylacetylamino-1,2,3,4-tetrahydro-quinazoline-2-carboxylic acid methyl ester

2-Methoxycarbonylmethyl-1-methyl-4-oxo-3-phenylacetylamino-1,2,3,4-tetrahydro-quinazoline-2-carboxylic acid methyl ester

Conditions
ConditionsYield
In methanol for 2h; Heating;100%
<4.3.2>Propella-2,4,8-trien-7-one
124944-28-1

<4.3.2>Propella-2,4,8-trien-7-one

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

C17H16O5

C17H16O5

Conditions
ConditionsYield
at 80℃; for 12h;100%
1,3-dimethyl-4-(phenylsulfonyl)-4H-furo[3,4-b]indole
89241-38-3

1,3-dimethyl-4-(phenylsulfonyl)-4H-furo[3,4-b]indole

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

Dimethyl 1,4-Epoxy-1,4-dimethyl-1,4-dihydro-5-(phenylsulfonyl)-2,3-carbazoledicarboxylate
92399-38-7

Dimethyl 1,4-Epoxy-1,4-dimethyl-1,4-dihydro-5-(phenylsulfonyl)-2,3-carbazoledicarboxylate

Conditions
ConditionsYield
In benzene 1.) 1h, room temp., 2.) 5h, reflux;100%
3,4-di-tert-butyl-thiophene 1,1-dioxide
116375-45-2

3,4-di-tert-butyl-thiophene 1,1-dioxide

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

4,5-Di-tert-butyl-phthalic acid dimethyl ester
116375-46-3

4,5-Di-tert-butyl-phthalic acid dimethyl ester

Conditions
ConditionsYield
In 1,2-dichloro-benzene for 7h; Heating;100%
<4.3.2>propella-2,4,7,10-tetraene
4473-99-8

<4.3.2>propella-2,4,7,10-tetraene

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

C17H16O4
131236-31-2

C17H16O4

Conditions
ConditionsYield
at 70℃; for 3h;100%
N-(diazoacetoacetyl)-N-phenyl-1-pyrrolidinecarboxamide
130935-28-3

N-(diazoacetoacetyl)-N-phenyl-1-pyrrolidinecarboxamide

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

dimethyl 2-acetyl-5-pyrrolidine-3,4-furandicarboxylate
130935-29-4

dimethyl 2-acetyl-5-pyrrolidine-3,4-furandicarboxylate

Conditions
ConditionsYield
rhodium(II) octanoate In benzene at 25℃; for 0.25h;100%

762-42-5Upstream product

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