Synthesis of (5<i>R</i>)-4-Methyl-5-phenyl-1,3,4-oxadiazinan-2-one and Some <i>N</i>-Acyl Derivatives from (<i>R</i>)-Phenylglycine
作者:Alessandro Rodrigues、Paulo Olivato、Roberto Rittner
DOI:10.1055/s-2005-872101
日期:——
(5R)-4-Methyl-5-phenyl-1,3,4-oxadiazinan-2-one was synthesized from (R)-phenylglycine in five steps and in 65% overall yield. In addition, a convenient and practical method for N-acylation of 1,3,4-oxadiazinan-2-one directly with acids in the presence of DCC and catalytic quantities of DMAP is described. The acylated products were obtained in excellent yields.
(5R)-4-甲基-5-苯基-1,3,4-噁二嗪烷-2-酮是通过五步从(R)-苯基甘氨酸合成的,总收率为65%。此外,还描述了一种方便实用的方法,利用DCC和催化量的DMAP直接用酸对1,3,4-噁二嗪烷-2-酮进行N-酰化。所得到的酰化产物具有优异的收率。