A new general method for the synthesis of chiral triarylbismuthines based on the intramolecular coordination by a sulfonyl group
作者:Hitomi Suzuki、Toshihiro Murafuji
DOI:10.1039/c39920001143
日期:——
Chiral triarylbismuthines 4 are synthesized by the sulfonyl-controlled selective iododearylation of 2, followed by reaction of the resulting iodobismuthine 3 with aryl Grignard reagents and are resolved into each pair of optical isomers; compounds 4 were readily converted into chiral bismuthines 5 of a more general type by nucleophilic substitution with aryllithium at the bismuth atom centre.
手性三芳基铋 4 是通过磺酰基控制的 2 的选择性碘代芳基化反应合成的,然后将生成的碘铋 3 与芳基格氏试剂反应,并分解成每一对光学异构体;通过在铋原子中心用芳基锂进行亲核取代,化合物 4 很容易转化为更一般类型的手性铋 5。