Welcome to LookChem.com Sign In|Join Free

CAS

  • or

32634-66-5

Post Buying Request

32634-66-5 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

32634-66-5 Usage

Uses

Different sources of media describe the Uses of 32634-66-5 differently. You can refer to the following data:
1. (-)-di-p-toluoyl-l-tartaric acid can be used as a chiral resolving agent for the resolution of the racemic bases to isolate the (-)-enantiomeric forms.
2. Escitalopram intermediate
3. (-)-O,O’-Di-p-toluoyl-L-tartaric Acid is a useful reagent for the preparation of the upadacitinib salt compound.
4. Inhibitor of enzyme

Chemical Properties

white to light yellow crystal powde

General Description

(-)-O,O′-Di-p-toluoyl-L-tartaric acid is a O,O′-diacyl tartaric acid derivative that can be prepared by the resolution of its racemate in the presence of cinchonine.

Check Digit Verification of cas no

The CAS Registry Mumber 32634-66-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,2,6,3 and 4 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 32634-66:
(7*3)+(6*2)+(5*6)+(4*3)+(3*4)+(2*6)+(1*6)=105
105 % 10 = 5
So 32634-66-5 is a valid CAS Registry Number.
InChI:InChI=1/C20H18O8/c1-11-3-7-13(8-4-11)15(21)19(27,17(23)24)20(28,18(25)26)16(22)14-9-5-12(2)6-10-14/h3-10,27-28H,1-2H3,(H,23,24)(H,25,26)

32634-66-5 Well-known Company Product Price

  • Brand
  • (Code)Product description
  • CAS number
  • Packaging
  • Price
  • Detail
  • TCI America

  • (D1387)  (-)-Di-p-toluoyl-L-tartaric Acid  >98.0%(HPLC)(T)

  • 32634-66-5

  • 25g

  • 590.00CNY

  • Detail
  • TCI America

  • (D1387)  (-)-Di-p-toluoyl-L-tartaric Acid  >98.0%(HPLC)(T)

  • 32634-66-5

  • 250g

  • 2,650.00CNY

  • Detail
  • Alfa Aesar

  • (B22972)  Di-p-toluoyl-L-tartaric acid, 98%   

  • 32634-66-5

  • 5g

  • 440.0CNY

  • Detail
  • Alfa Aesar

  • (B22972)  Di-p-toluoyl-L-tartaric acid, 98%   

  • 32634-66-5

  • 25g

  • 1462.0CNY

  • Detail
  • Alfa Aesar

  • (B22972)  Di-p-toluoyl-L-tartaric acid, 98%   

  • 32634-66-5

  • 100g

  • 2982.0CNY

  • Detail
  • Aldrich

  • (371416)    97%

  • 32634-66-5

  • 371416-25G

  • 888.03CNY

  • Detail

32634-66-5SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 11, 2017

Revision Date: Aug 11, 2017

1.Identification

1.1 GHS Product identifier

Product name Di-p-toluoyl-L-tartaric acid monohydrate

1.2 Other means of identification

Product number -
Other names Tartaric acid,di-p-toluate

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:32634-66-5 SDS

32634-66-5Synthetic route

di-O-p-toluoyl-L-threaric acid-anhydride
72842-25-2

di-O-p-toluoyl-L-threaric acid-anhydride

Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

Conditions
ConditionsYield
With water
di-O-p-toluoyl-Lg-tartaric acid-anhydride

di-O-p-toluoyl-Lg-tartaric acid-anhydride

Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

Conditions
ConditionsYield
With water; acetone
L-Tartaric acid
87-69-4

L-Tartaric acid

4-methyl-benzoyl chloride
874-60-2

4-methyl-benzoyl chloride

Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

Conditions
ConditionsYield
at 170℃; for 1h;
(R)-α-(2,3-dimethoxyphenyl)-4-piperidinemethanol, (2R,3R)-(-)-di-(p-toluoyl)tartaric acid salt
869749-09-7

(R)-α-(2,3-dimethoxyphenyl)-4-piperidinemethanol, (2R,3R)-(-)-di-(p-toluoyl)tartaric acid salt

A

Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

B

(2,3‐dimethoxyphenyl)(piperidine‐4‐yl)methanol
243640-19-9

(2,3‐dimethoxyphenyl)(piperidine‐4‐yl)methanol

Conditions
ConditionsYield
Stage #1: (R)-α-(2,3-dimethoxyphenyl)-4-piperidinemethanol, (2R,3R)-(-)-di-(p-toluoyl)tartaric acid salt With ammonia In methanol; water for 2h;
Stage #2: With hydrogenchloride In water Product distribution / selectivity;
A n/a
B n/a
3-aminomethyl-5-methylhexanoic acid (-)-(O,O')-di-p-toluoyl-L-tartaric acid salt

3-aminomethyl-5-methylhexanoic acid (-)-(O,O')-di-p-toluoyl-L-tartaric acid salt

Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

Conditions
ConditionsYield
In tetrahydrofuran; water at 30℃; for 2.33333 - 3h;
C10H14N2*C20H18O8

C10H14N2*C20H18O8

Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

Conditions
ConditionsYield
With hydrogenchloride In tert-butyl methyl ether; water for 0.5h;345.5 g
rac-O,O'-di-p-toluoyltartaric acid
32634-66-5, 32634-68-7, 100168-11-4, 104528-81-6

rac-O,O'-di-p-toluoyltartaric acid

A

Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

B

(2S,3S)-di-4-toluoyltartaric acid
32634-68-7

(2S,3S)-di-4-toluoyltartaric acid

Conditions
ConditionsYield
With C22H24N2(2+)*2CF3O3S(1-) In aq. acetate buffer at 20℃; pH=8.1; Resolution of racemate;
1-(3-dimethylamino-propyl)-1-(4-fluoro-phenyl)-1,3-dihydro-isobenzofuran-5-carbonitrile
59729-33-8

1-(3-dimethylamino-propyl)-1-(4-fluoro-phenyl)-1,3-dihydro-isobenzofuran-5-carbonitrile

Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

C20H18O8*C20H21FN2O
1373405-39-0

C20H18O8*C20H21FN2O

Conditions
ConditionsYield
In isopropyl alcohol Reflux;100%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

3-amino-1-(5-bromopyridin-2-yl)-2-(2,4-difluorophenyl)-1,1-difluoropropan-2-ol

3-amino-1-(5-bromopyridin-2-yl)-2-(2,4-difluorophenyl)-1,1-difluoropropan-2-ol

3-amino-1-(5-bromopyridin-2-yl)-2-(2,4-difluorophenyl)-1,1-difluoropropan-2-ol

3-amino-1-(5-bromopyridin-2-yl)-2-(2,4-difluorophenyl)-1,1-difluoropropan-2-ol

Conditions
ConditionsYield
Stage #1: Di-p-toluoyl-L-tartaric acid; 3-amino-1-(5-bromopyridin-2-yl)-2-(2,4-difluorophenyl)-1,1-difluoropropan-2-ol In isopropyl alcohol; acetonitrile at 20 - 50℃; for 1.5h;
Stage #2: With potassium carbonate In methanol; water at 20 - 30℃;
99.54%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

3-amino-5-phenyl-1,3-dihydrobenzo[e][1,4]diazepin-2-one
103343-47-1

3-amino-5-phenyl-1,3-dihydrobenzo[e][1,4]diazepin-2-one

C15H13N3O*C20H18O8

C15H13N3O*C20H18O8

Conditions
ConditionsYield
With air In 1,4-dioxane at 20℃; for 24h;99%
(R)-1-(1-methyl-but-2-ynyl)-pyrrolidine
911053-21-9

(R)-1-(1-methyl-but-2-ynyl)-pyrrolidine

Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

(R)-1-(1-methyl-but-2-ynyl)-pyrrolidine di-p-toluoyl-L-tartaric acid salt
911053-22-0

(R)-1-(1-methyl-but-2-ynyl)-pyrrolidine di-p-toluoyl-L-tartaric acid salt

Conditions
ConditionsYield
In dichloromethane97.4%
(2SR,3SR)-hydroxybupropion

(2SR,3SR)-hydroxybupropion

Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

A

(+)-(2S,3S)-2-(3-chlorophenyl)-3,5,5-trimethyl-2-morpholinol, L-DTTA salt
357399-44-1

(+)-(2S,3S)-2-(3-chlorophenyl)-3,5,5-trimethyl-2-morpholinol, L-DTTA salt

B

C13H18ClNO2*C20H18O8
386210-39-5

C13H18ClNO2*C20H18O8

Conditions
ConditionsYield
In 2-methylpropyl acetate at 80℃; for 18h; Product distribution / selectivity; Resolution of racemate;A 97%
B n/a
In Isopropyl acetate at 80℃; for 18h; Product distribution / selectivity; Resolution of racemate;A 92%
B n/a
In ethyl acetate at 80℃; for 18h; Product distribution / selectivity; Resolution of racemate;A 90%
B n/a
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

C12H9F2N

C12H9F2N

C12H9F2N*C20H18O8

C12H9F2N*C20H18O8

Conditions
ConditionsYield
With 2,4,6-triphenylpyrylium tetrafluoroborate In toluene at 20℃; for 3h; Irradiation;97%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

VTP-27999
942142-51-0

VTP-27999

methyl 2-((R)-(3-chlorophenyl)((R)-1-((S)-2-(methylamino)-3-((R)-tetrahydro-2H-pyran-3-yl)propylcarbamoyl)piperidin-3-yl)methoxy)ethylcarbamate di-p-toluoyl-L-tartrate

methyl 2-((R)-(3-chlorophenyl)((R)-1-((S)-2-(methylamino)-3-((R)-tetrahydro-2H-pyran-3-yl)propylcarbamoyl)piperidin-3-yl)methoxy)ethylcarbamate di-p-toluoyl-L-tartrate

Conditions
ConditionsYield
In ethyl acetate at 50℃; for 0.9h; Product distribution / selectivity;92%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

2-(tert-butylamino)-1-(2,2-dimethyl-4H-benzo[d][1,3]dioxan-6-yl)ethanol
54208-72-9

2-(tert-butylamino)-1-(2,2-dimethyl-4H-benzo[d][1,3]dioxan-6-yl)ethanol

C16H25NO3*C20H18O8

C16H25NO3*C20H18O8

Conditions
ConditionsYield
In methanol91%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

cis-(+/-)-2-phenylpiperidin-3-ylamine

cis-(+/-)-2-phenylpiperidin-3-ylamine

C51H48N2O14

C51H48N2O14

Conditions
ConditionsYield
In methanol at 20 - 60℃; for 3h;91%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

C20H23F2N3O

C20H23F2N3O

C20H23F2N3O*C20H18O8

C20H23F2N3O*C20H18O8

Conditions
ConditionsYield
With 2,4,6-triphenylpyrylium tetrafluoroborate In toluene at 20℃; for 3h; Irradiation;91%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

dimethyl 2-(pyridin-3-yl)cyclopropane-1,1-dicarboxylate

dimethyl 2-(pyridin-3-yl)cyclopropane-1,1-dicarboxylate

C12H13NO4*C20H18O8

C12H13NO4*C20H18O8

Conditions
ConditionsYield
With 2,4,6-triphenylpyrylium tetrafluoroborate In toluene at 20℃; for 3h; Reagent/catalyst; Solvent; Irradiation;91%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

C16H11NO2

C16H11NO2

C16H11NO2*C20H18O8

C16H11NO2*C20H18O8

Conditions
ConditionsYield
With 2,4,6-triphenylpyrylium tetrafluoroborate In toluene at 20℃; for 3h; Irradiation;91%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

(4aS,8aS)-rel-3-methoxy-11-methyl-4a,5,9,10,11,12-hexahydro-6H-benzo[2,3]benzofuro[4,3-cd]azepin-6-one
510-77-0, 1668-86-6, 7318-55-0

(4aS,8aS)-rel-3-methoxy-11-methyl-4a,5,9,10,11,12-hexahydro-6H-benzo[2,3]benzofuro[4,3-cd]azepin-6-one

[(+)-narwedine]2[di-p-toluoyl-L-tartrate]

[(+)-narwedine]2[di-p-toluoyl-L-tartrate]

Conditions
ConditionsYield
In ethanol90%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

(4aS,8aS)-rel-3-methoxy-11-methyl-4a,5,9,10,11,12-hexahydro-6H-benzo[2,3]benzofuro[4,3-cd]azepin-6-one
510-77-0, 1668-86-6, 7318-55-0

(4aS,8aS)-rel-3-methoxy-11-methyl-4a,5,9,10,11,12-hexahydro-6H-benzo[2,3]benzofuro[4,3-cd]azepin-6-one

[(+)-narwedine][di-p-toluoyl-L-tartrate]

[(+)-narwedine][di-p-toluoyl-L-tartrate]

Conditions
ConditionsYield
In ethanol at 20 - 40℃; for 19h; Heating / reflux;90%
5'-chloro-2-(2-pyridinyl)-spiro[cyclopropane-1,3'-[3H]indol]-2'(1'H)-one

5'-chloro-2-(2-pyridinyl)-spiro[cyclopropane-1,3'-[3H]indol]-2'(1'H)-one

Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

C15H11ClN2O*C20H18O8

C15H11ClN2O*C20H18O8

Conditions
ConditionsYield
With 2,4,6-triphenylpyrylium tetrafluoroborate In toluene at 20℃; for 3h; Irradiation;90%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

3-(2,2-difluorocyclopropyl)-6-[5-fluoro-6-(2,2,2-trifluoro-1,1-dimethyl-ethoxy)-3-pyridyl]-[1,2,4]triazolo[4,3-b]pyridazine

3-(2,2-difluorocyclopropyl)-6-[5-fluoro-6-(2,2,2-trifluoro-1,1-dimethyl-ethoxy)-3-pyridyl]-[1,2,4]triazolo[4,3-b]pyridazine

C17H13F6N5O*C20H18O8

C17H13F6N5O*C20H18O8

Conditions
ConditionsYield
With 2,4,6-triphenylpyrylium tetrafluoroborate In toluene at 20℃; for 3h; Irradiation;90%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

(S)-3-amino-1,4,4-trimethylpyrrolidin-2-one
1316216-24-6

(S)-3-amino-1,4,4-trimethylpyrrolidin-2-one

(S)-3-amino-1,4,4-trimethylpyrrolidin-2-one O,O-di-p-toluoyl-(2R,3R)-tartrate
1316216-26-8

(S)-3-amino-1,4,4-trimethylpyrrolidin-2-one O,O-di-p-toluoyl-(2R,3R)-tartrate

Conditions
ConditionsYield
In methanol89%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

ketamine
6740-88-1

ketamine

A

(S)-ketamine (-)-O,O'-di-p-toluoyl-L-tartaric acid salt

(S)-ketamine (-)-O,O'-di-p-toluoyl-L-tartaric acid salt

B

R-(-)-ketamine, (−)-di-p-toluoyl-L-tartaric acid salt

R-(-)-ketamine, (−)-di-p-toluoyl-L-tartaric acid salt

Conditions
ConditionsYield
In ethanol at 25 - 84℃;A 89%
B 70%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

1-[2-(3-hydroxyadamant-1-yl-amino)acetyl] pyrrolidine-(2S)-carbonitrile

1-[2-(3-hydroxyadamant-1-yl-amino)acetyl] pyrrolidine-(2S)-carbonitrile

vildagliptin O,O'-di-p-toluoyl-(2R,3R)-hydrogentartarate

vildagliptin O,O'-di-p-toluoyl-(2R,3R)-hydrogentartarate

Conditions
ConditionsYield
Stage #1: 1-[2-(3-hydroxyadamant-1-yl-amino)acetyl] pyrrolidine-(2S)-carbonitrile With hydrogenchloride In ethanol; water
Stage #2: Di-p-toluoyl-L-tartaric acid In methanol; ethanol; water at 25 - 50℃; for 3h;
88.8%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

escitalopram
128196-01-0

escitalopram

C20H18O8*C20H21FN2O
928652-44-2

C20H18O8*C20H21FN2O

Conditions
ConditionsYield
In ethanol for 2h;88%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

C15H9F5N4O

C15H9F5N4O

C15H9F5N4O*C20H18O8

C15H9F5N4O*C20H18O8

Conditions
ConditionsYield
With 2,4,6-triphenylpyrylium tetrafluoroborate In toluene at 20℃; for 3h; Irradiation;88%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

(S)-1-[3-(dimethylamino)propyl]-1-(4-flouorphenyl)-1,3-dihydro-5-isobenzofuran carbonitrile
128196-02-1

(S)-1-[3-(dimethylamino)propyl]-1-(4-flouorphenyl)-1,3-dihydro-5-isobenzofuran carbonitrile

C20H18O8*C20H21FN2O

C20H18O8*C20H21FN2O

Conditions
ConditionsYield
In ethanol for 2h;87%
cis-2-phenyl-3-aminopiperidine

cis-2-phenyl-3-aminopiperidine

Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

[2S]-phenyl-piperidin-[3S]-yl-amine [2R,3R]-bis(4-methyl-benzyloxy)-succinate
168267-14-9, 262598-85-6

[2S]-phenyl-piperidin-[3S]-yl-amine [2R,3R]-bis(4-methyl-benzyloxy)-succinate

Conditions
ConditionsYield
In ethanol; water at 20℃; Heating;86%
(R)-2-amino-2-ethylhexyl hydrogen sulfate

(R)-2-amino-2-ethylhexyl hydrogen sulfate

Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

3-hydroxy-4-methoxythiophenol
69845-06-3

3-hydroxy-4-methoxythiophenol

(R)-5-((2-amino-2-ethylhexyl)thio)-2-methoxyphenol di-p-toluoyl-L-tartrate

(R)-5-((2-amino-2-ethylhexyl)thio)-2-methoxyphenol di-p-toluoyl-L-tartrate

Conditions
ConditionsYield
Stage #1: (R)-2-amino-2-ethylhexyl hydrogen sulfate With sodium hydroxide In water for 2h; Reflux;
Stage #2: 3-hydroxy-4-methoxythiophenol In methanol at 20℃; for 1h; Inert atmosphere;
Stage #3: Di-p-toluoyl-L-tartaric acid In acetonitrile at 20 - 45℃; for 7h;
85%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

rac-(1R,2R)-2-(benzylamino)cyclohexanol
40571-86-6, 40571-87-7, 51925-39-4, 131164-07-3, 141553-09-5

rac-(1R,2R)-2-(benzylamino)cyclohexanol

A

C33H35NO8

C33H35NO8

B

(1S,2S)-trans-2-(N-benzyl)amino-1-cyclohexanol
322407-34-1

(1S,2S)-trans-2-(N-benzyl)amino-1-cyclohexanol

Conditions
ConditionsYield
With hydrogenchloride In methanol; water at 20 - 65℃; for 3h; optical yield given as %de;A 83%
B n/a
(S)-2-amino-3-methylbutyric acid (2R,3R,11bR)-3-isobutyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrido[2,1-a]isoquinolizin-2-yl ester
1025504-45-3

(S)-2-amino-3-methylbutyric acid (2R,3R,11bR)-3-isobutyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrido[2,1-a]isoquinolizin-2-yl ester

Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

C20H18O8*C24H38N2O4

C20H18O8*C24H38N2O4

Conditions
ConditionsYield
In dichloromethane; Isopropyl acetate at 45 - 60℃; for 3h;82%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

moxifloxacin
151096-09-2

moxifloxacin

1-cyclopropyl-7-[(S,S)-2,8-diazabicyclo[4.3.0]non-8-yl]-6-fluoro-8-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid di-p-toluoyl-L-tartarate
1082245-36-0

1-cyclopropyl-7-[(S,S)-2,8-diazabicyclo[4.3.0]non-8-yl]-6-fluoro-8-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid di-p-toluoyl-L-tartarate

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 25 - 80℃; for 13 - 16h;81.93%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

zopiclon
43200-80-2

zopiclon

A

R-zopiclone di-p-toluoyl-L-tartaric acid salt

R-zopiclone di-p-toluoyl-L-tartaric acid salt

B

eszopiclone di-p-toluoyl-L-tartaric acid salt
945843-90-3

eszopiclone di-p-toluoyl-L-tartaric acid salt

Conditions
ConditionsYield
In 1-methyl-pyrrolidin-2-one; water at 60 - 65℃; for 1h; Resolution of racemate;A n/a
B 81.5%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

zopiclon
43200-80-2

zopiclon

eszopiclone di-p-toluoyl-L-tartaric acid salt
945843-90-3

eszopiclone di-p-toluoyl-L-tartaric acid salt

Conditions
ConditionsYield
Stage #1: zopiclon In 1-methyl-pyrrolidin-2-one; water at 60 - 65℃;
Stage #2: Di-p-toluoyl-L-tartaric acid In 1-methyl-pyrrolidin-2-one; water at 60 - 65℃; for 1h;
81.5%
Di-p-toluoyl-L-tartaric acid
32634-66-5

Di-p-toluoyl-L-tartaric acid

(S)-3-amino-1-(p-methoxybenzyl)-4,4-dimethylpyrrolidin-2-one
1248826-58-5

(S)-3-amino-1-(p-methoxybenzyl)-4,4-dimethylpyrrolidin-2-one

(S)-3-amino-1-(p-methoxybenzyl)-4,4-dimethylpyrrolidin-2-one mono-(2R,3R)-O,O'-di(p-toluoyl)tartrate
1248826-82-5

(S)-3-amino-1-(p-methoxybenzyl)-4,4-dimethylpyrrolidin-2-one mono-(2R,3R)-O,O'-di(p-toluoyl)tartrate

Conditions
ConditionsYield
In methanol81%

32634-66-5Relevant articles and documents

Diquats with Robust Chirality: Facile Resolution, Synthesis of Chiral Dyes, and Application as Selectors in Chiral Analysis

Talele, Harish R.,Koval, Du?an,Severa, Luká?,Reyes-Gutiérrez, Paul E.,Císa?ová, Ivana,Sázelová, Petra,?aman, David,Bednárová, Lucie,Ka?i?ka, Václav,Teply, Filip

, p. 7601 - 7604 (2018)

Diquats with extremely high racemization barriers with ΔG≠theor of 233 kJ mol?1 at 180 °C are described. Reported configurational robustness is due to a combination of two structural features: the rigid o-xylylene tether connecting the nitrogen atoms and the presence of two substituents in the bay region of the bipyridinium scaffold. The straightforward synthesis of diquats, plus facile resolution and derivatization make them attractive for chiral application studies. This is demonstrated by: 1) synthesis of the first non-racemic diquat dyes with pronounced chiroptical properties, and 2) capability of diquats to interact stereospecifically with chiral molecules. This suggests potential for diquat derivatives to be used as chiral selectors in separation methods.

NOVEL RESOLUTION PROCESS FOR PREGABALIN

-

Page/Page column 6; 15, (2009/05/29)

Present invention relates to a novel and improved process for the resolution of racemic pregabalin of formula (I) into (S)-(+)-pregabalin [(S)-(+)-3-aminomethyl-5-methylhexanoic acid] of formula (III) via the novel acid addition salt [(S)-(+) 3-aminomethyl-5-methylhexanoic acid, (-)-O, O'-di-p-toluoyl-L-tartaric acid salt] of formula (II). (S)-(+)-pregabalin of formula-III has analgesic, anticonvulsant and anxiolytic properties and hence is of great therapeutic significance.

Novel processes for the preparation of (R)-alpha-(2,3-dimethoxyphenyl)-1-[2-(4-fluorophenyl)ethyl]-4-piperidinemethanol

-

, (2008/06/13)

The present invention provides various processes for the preparation of (R)-α-(2,3-dimethoxyphenyl)-1-[2-(4-fluorophenyl)ethyl]-4-piperidinemethanol. These processes may be characterized by the following scheme:

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 32634-66-5