3A-BENZYL-2-METHYL-2,3A,4,5,6,7-HEXAHYDRO-3H-PYRAZOLO[4,3-C]PYRIDIN-3-ONE L-TARTARATE

Base Information

• Chemical Name: 3A-BENZYL-2-METHYL-2,3A,4,5,6,7-HEXAHYDRO-3H-PYRAZOLO[4,3-C]PYRIDIN-3-ONE L-TARTARATE
• CAS No.: 193274-37-2
• Molecular Weight: 393.397
• Mol file: 193274-37-2.mol

Synonyms:3A-BENZYL-2-METHYL-2,3A,4,5,6,7-HEXAHYDRO-3H-PYRAZOLO[4,3-C]PYRIDIN-3-ONE L-TARTARATE

Chemical Property of 3A-BENZYL-2-METHYL-2,3A,4,5,6,7-HEXAHYDRO-3H-PYRAZOLO[4,3-C]PYRIDIN-3-ONE L-TARTARATE

Chemical Property:

• PSA: 159.76000
• LogP: -1.38350

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 3A-BENZYL-2-METHYL-2,3A,4,5,6,7-HEXAHYDRO-3H-PYRAZOLO[4,3-C]PYRIDIN-3-ONE L-TARTARATE

There total 2 articles about 3A-BENZYL-2-METHYL-2,3A,4,5,6,7-HEXAHYDRO-3H-PYRAZOLO[4,3-C]PYRIDIN-3-ONE L-TARTARATE which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 87.0%

L-Tartaric acid (87-69-4,138508-61-9) + 3a-(R)-Benzyl-2-methyl-2,3a,4,5,6,7-hexahydro-pyrazolo[4,3-c]pyridin-3-one (193274-04-3) → (R)-3a-benzyl-2-methyl-4,5,6,7-tetrahydro-2H-pyrazolo[4,3-c]pyridin-3(3aH)-one (2R,3R)-2,3-dihydroxysuccinate (193274-37-2)

Guidance literature:

In water; acetone; at 50 ℃; for 70h; Inert atmosphere;

DOI:10.1016/j.bmc.2016.12.015

Reference yield: 70.1%

L-Tartaric acid (87-69-4,138508-61-9) + 2,3a,4,5,6,7-hexahydro-2-methyl-3-oxo-3a-(phenylmethyl)-5H-pyrazolo[4,3-c]pyridine-5-carboxylic acid 1,1-dimethylethyl ester (193274-02-1) → (R)-3a-benzyl-2-methyl-4,5,6,7-tetrahydro-2H-pyrazolo[4,3-c]pyridin-3(3aH)-one (2R,3R)-2,3-dihydroxysuccinate (193274-37-2)

Guidance literature:

With sodium carbonate; In dichloromethane; water; acetone;

Reference yield: 69.0%

(R)-3a-benzyl-2-methyl-4,5,6,7-tetrahydro-2H-pyrazolo[4,3-c]pyridin-3(3aH)-one (2R,3R)-2,3-dihydroxysuccinate (193274-37-2) + triethylammonium (R)-2-((tert-butoxycarbonyl)amino)-4-hydroxybutanoate → tert-butyl ((R)-1-((R)-3a-benzyl-2-methyl-3-oxo-3a,4,6,7-tetrahydro-2H-pyrazolo[4,3-c]pyridin-5(3H)-yl)-4-hydroxy-1-oxobutan-2-yl)carbamate

Guidance literature:

(R)-3a-benzyl-2-methyl-4,5,6,7-tetrahydro-2H-pyrazolo[4,3-c]pyridin-3(3aH)-one (2R,3R)-2,3-dihydroxysuccinate; With triethylamine; In ethyl acetate; at -50 ℃; for 0.416667h; Inert atmosphere;

triethylammonium (R)-2-((tert-butoxycarbonyl)amino)-4-hydroxybutanoate; With 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide; In ethyl acetate; at -50 ℃; for 2.16667h;

upstream raw materials:

L-Tartaric acid

2,3a,4,5,6,7-hexahydro-2-methyl-3-oxo-3a-(phenylmethyl)-5H-pyrazolo[4,3-c]pyridine-5-carboxylic acid 1,1-dimethylethyl ester

3a-(R)-Benzyl-2-methyl-2,3a,4,5,6,7-hexahydro-pyrazolo[4,3-c]pyridin-3-one

Downstream raw materials:

{1-[2-(3a-(R)-benzyl-2-methyl-3-oxo-2,3,3a,4,6,7-hexahydro-pyrazolo[4,3-c]pyridin-5-yl)-1-(R)-benzyloxymethyl-2-oxo-ethylcarbamoyl]-1-methyl-ethyl}carbamic acid tert-butyl ester

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