申请人:Isochem
公开号:US05292885A1
公开(公告)日:1994-03-08
2,3,5-(4H)-Trimethyl pyranone having the formula: ##STR1## which is prepared by acetylation of a ketone derived from 2-formyl-3-pentanone and preparation of 2,3,5-(1H)-trimethyl 4-pyridinone having the formula: ##STR2## by ammonolysis of the 2,3,5-(4H)-trimethyl 4-pyranone.
2,3,5-(4H)-三甲基吡喃酮的分子式为:##STR1## 它是由2-甲酰基-3-戊酮衍生的酮乙酰化制备而成的,并通过2,3,5-(4H)-三甲基吡喃酮的氨解制备出分子式为:##STR2## 的2,3,5-(1H)-三甲基吡啶酮。