Synthesis and Application of N-Methoxy-N-methyl-2-phenylsulfonylacetamide as a Two-Carbon Homologating Agent
作者:N. Satyamurthi、Jaimala Singh、Indrapal Singh Aidhen
DOI:10.1055/s-2000-6337
日期:——
With the well-known precedence that N-methoxy-N-methyl amides are excellent acyl cation and aldehyde equivalents, N-methoxy-N-methyl-2-phenylsulfonylacetamide (3), a new reagent, synthetically equivalent to ÎCH2CHO and ÎCH2COR was synthesised. The simplicity involved in the alkylation at the active methylene site in 3, followed by safe removal of the phenylsulfonyl group, makes 3 a versatile reagent for two-carbon homologation of alkyl halides. The method, when applied to sugar halides 6j and 6k led to the synthesis of 2,3-dideoxy sugars.
在众所周知的前提下,N-甲氧基-N-甲基酰胺是优秀的酰阳离子和醛的等效物,新试剂N-甲氧基-N-甲基-2-苯基磺酰乙酰胺(3)被合成,它在合成上相当于ÎCH2CHO和ÎCH2COR。3中活性亚甲基位点的烷基化过程简单,同时安全去除苯基磺酰基,使得3成为烷基卤化物的两碳同系物合成的多功能试剂。当该方法应用于糖卤化物6j和6k时,成功合成了2,3-二脱氧糖。