作者:Yaşar Dürüst、Muhammet Yıldırım、Chris F. Fronczek、Frank R. Fronczek
DOI:10.1007/s00706-011-0618-z
日期:2012.1
AbstractEleven novel dihydropyrrolo[3,4-c]pyrazole derivatives were obtained by the reaction of chiral (1R)-N-(1-phenylethyl)maleimide and C,N-aryl-substituted nitrilimines. The reaction afforded the cycloadducts as a regioisomeric mixture which can be separable in some cases. The structure and stereochemistry of cycloadducts were assigned on the basis of infrared (IR), 1H and 13C nuclear magnetic
摘要通过手性(1 R)-N-(1-苯基乙基)马来酰亚胺与C,N-芳基取代的亚硝胺反应,制得了十一种新颖的二氢吡咯并[3,4- c ]吡唑衍生物。反应得到环加合物,为区域异构体混合物,其在某些情况下是可分离的。根据红外(IR),1 H和13 C核磁共振(NMR),质量和X射线光谱,旋光度测量和CHN分析确定环加合物的结构和立体化学。 图形概要 。