The thiolate- or selenolate-induced Michaelâaldol tandem process using secondary α,β-unsaturated amides gave α-phenylthio- or α-phenylseleno-methyl-β-hydroxy amides syn-selectively, which were readily converted into NH-amide aldols or BaylisâHillman adducts.
用
硫代或
硒代阴离子诱导的迈克尔-阿尔多尔串联反应,利用二级α,β-不饱和酰胺合成了α-苯
硫基或α-苯
硒基甲基-β-羟基酰胺,且具有同位选择性,这些产物可以方便地转化为NH-酰胺阿尔多尔或贝利斯-希尔曼加成物。