Improved Process for Preparation of (3<i>R</i>,4<i>R</i>)-3-(3,4-Dimethyl-4-piperidinyl)phenol, A Key Intermediate for the Synthesis of Alvimopan
作者:Beeravalli Ramalinga Reddy、Kikkuru Srirami Reddy、Manoj Kumar Dubey、Y. Bharati Kumari、Rakeshwar Bandichhor
DOI:10.1021/op400144z
日期:2014.1.17
This report discloses an industrially feasible and cost efficient process for the preparation of the compound [(3R, 4R)-3-(3,4-dimethyl-4-piperidinyl)phenol] (1), which is used as the key intermediate for preparation of the opioid drug Alvimopan. The overall yield in this process is increased from 15 to 30%, mainly due to the improvement in yield from 26 to 53% for intermediate 7.
该报告公开了一种工业上可行且经济高效的制备化合物[(3 R,4 R)-3-(3,4-二甲基-4-哌啶基)酚](1)的方法。阿片类药物阿维莫潘制备的中间体。该过程中的总产率从15%增加到30%,这主要是由于中间体7的产率从26%提高到53%。