Synthesis and Cyclization Reactions of Axially Chiral<i>N</i>-Sulfamoyl-acrylamidines
作者:Andreas Lender、Ingo Tornus、Eike Hübner、Ernst Schaumann
DOI:10.1002/hc.21190
日期:2014.11
N-Sulfonylamines are generated and in situ reacted with 3-dialkylamino-2H-azirines to give N-sulfamoyl-acrylamidines. The magnetic nonequivalence of prochiral groups in the 1H NMR spectrum suggests an axially chiral structure, which is supported by density-functional theory calculations. Base-induced cyclization occurs readily to give 1,2,6-thiadiazine derivatives.
生成 N-磺酰胺并原位与 3-二烷基氨基-2H-氮丙啶反应生成 N-氨磺酰-丙烯脒。1H NMR 谱中前手性基团的磁性非等效性表明轴向手性结构,这得到了密度泛函理论计算的支持。碱诱导的环化很容易产生 1,2,6-噻二嗪衍生物。