Enantioselective synthesis of pyrazolone α-aminonitrile derivatives via an organocatalytic Strecker reaction
作者:Suruchi Mahajan、Pankaj Chauhan、Uğur Kaya、Kristina Deckers、Kari Rissanen、Dieter Enders
DOI:10.1039/c7cc02874a
日期:——
A new organocatalytic enantioselective Strecker reaction of pyrazolone-derived ketimine electrophiles has been developed. Using pseudo-enantiomeric squaramide catalysts the nucleophilic 1,2-addition of trimethylsilyl cyanide to the ketimines efficiently provides a direct entry to both enantiomers of pyrazolone α-aminonitrile derivatives at will in good yields and high enantioselectivities for a wide
已开发出吡唑啉酮衍生的酮亚胺亲电体的一种新的有机催化对映选择性斯特雷克反应。使用拟对映体方酸酰胺催化剂,将三甲基甲硅烷基氰化物亲核性1,2-加成到酮亚胺上,可以有效地直接直接进入吡唑啉酮α-氨基腈衍生物的两种对映体,并具有良好的收率和对多种底物的高对映选择性。