1008796-22-2

Basic information

• Product Name: 9-(benzyloxy)-3-(2-hydroxyethyl)-2-Methyl-4H-pyrido[1,2-a]pyriMidin-4-one
• Synonyms: 9-(benzyloxy)-3-(2-hydroxyethyl)-2-Methyl-4H-pyrido[1,2-a]pyriMidin-4-one;Hydroxy Compound of Paliperidone
• CAS NO: 1008796-22-2
• Molecular Formula: C₁₈H₁₈N₂O₃
• Molecular Weight: 310.34712
• Mol File: 1008796-22-2.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 522.0±60.0 °C(Predicted)
• Appearance: /
• Density: 1.22±0.1 g/cm3(Predicted)
• Storage Temp.: 2-8°C
• PKA: 14.50±0.10(Predicted)
• CAS DataBase Reference: 9-(benzyloxy)-3-(2-hydroxyethyl)-2-Methyl-4H-pyrido[1,2-a]pyriMidin-4-one(CAS DataBase Reference)
• NIST Chemistry Reference: 9-(benzyloxy)-3-(2-hydroxyethyl)-2-Methyl-4H-pyrido[1,2-a]pyriMidin-4-one(1008796-22-2)
• EPA Substance Registry System: 9-(benzyloxy)-3-(2-hydroxyethyl)-2-Methyl-4H-pyrido[1,2-a]pyriMidin-4-one(1008796-22-2)

Safety Data

• Hazardous Substances Data: 1008796-22-2(Hazardous Substances Data)

Usage

Uses

9-(Benzyloxy)-3-(2-hydroxyethyl)-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one is used as a reactant in the preparation of paliperidone.

Upstream product

• 16867-03-1 2-amino-3-hydroxypyridine 
• 100-44-7 benzyl chloride 
• 517-23-7 3-acetyl-2-oxo-4,5-dihydrofuran 
• 24016-03-3 2-amino-3-benzyloxypyridine 

Downstream Products

• 147687-17-0 9-(benzyloxy)-3-(2-chloroethyl)-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one 

Relevant articles and documents

Preparation method of high-purity paliperidone intermediate

The invention belongs to the technical field of medicine, and particularly discloses a preparation method of a high-purity paliperidone intermediate 3-(2-chloroethyl)-9-hydroxyl-2-methyl-6,7,8,9-tetrahydro-4H-pyridino[1,2-a] pyrimidine-4-ketone. The preparation method particularly comprises the following steps: preparing 9-(benzyloxy)-3-(2-chloroethyl)-2-methyl-4H-pyridino[1,2-a] pyrimidine-4-ketone by taking 2-amino-3-hydroxypyridine as a starting raw material and through benzyl protection, ring closure of alpha-acetyl-gamma-butyrolactone and chloro-substitution; dissolving the 9-(benzyloxy)-3-(2-chloroethyl)-2-methyl-4H-pyridino[1,2-a] pyrimidine-4-ketone into an alcohol solvent, adding acid and a palladium-charcoal catalyst, controlling hydrogen pressure, and after the reaction is completed, performing processes of filtering, concentrating, adjusting the pH value, extracting, concentrating and refining to obtain white-like powdered 3-(2-chloroethyl)-9-hydroxyl-2-methyl-6,7,8,9-tetrahydro-4H-pyridino[1,2-a] pyrimidine-4-ketone. The preparation method is short in cycle, the product is white-like, the yield reaches 70 percent or higher, the purity reaches 99 percent or higher, related impurities of chlorine-removed byproducts are avoided, and the preparation method is suitable for industrialized enlarged production.