Molecular Formula | C13H19NO |
Molar Mass | 205.3 |
Density | 1.056±0.06 g/cm3(Predicted) |
Boling Point | 135-138°C (0.2 mmHg) |
Flash Point | 139.8°C |
Vapor Presure | 0.00023mmHg at 25°C |
pKa | 14.94±0.10(Predicted) |
Storage Condition | Sealed in dry,Room Temperature |
Refractive Index | 1.551 |
Physical and Chemical Properties | Boiling Point: 135 - 138 |
Risk Codes | 25 - Toxic if swallowed |
Safety Description | S24/25 - Avoid contact with skin and eyes. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
Hazard Class | IRRITANT |
Introduction | 1-benzyl-4-piperidinemethanol as donepezil hydrochloride is an important intermediate of acetylcholinesterase inhibitors, is a long-acting Alzheimer's disease (AD, also known as Alzheimer's disease or senile dementia) treatment drugs, developed by the Japan Medical Science Corporation, it was first approved in the United States in 1997 and is currently available in more than 70 countries worldwide. |
product features | 1-benzyl-4-piperidine methanol is characterized by low dose, less toxic side effects and good tolerance, it plays an important role in the treatment of Alzheimer's disease. |
synthetic method | a route of 1-benzyl-4-piperidine methanol, a key intermediate of donepezil hydrochloride, is reported in the literature (J.Heterocycl.Chem.,1978,15,675-676) from 1-benzyl-4-piperidone, trimethyliodide oxide (Me3S(O)I) is reacted Corey-Chaykovsky with 1-benzyl-4-piperidone in the presence of sodium hydride to obtain epoxide, the target product was obtained by ring-opening with lithium aluminum tetrahydrate in two-step yield of 42.3%. |