作者:Fraser F. Fleming、Zhiyu Zhang、Paul Knochel
DOI:10.1021/ol036202s
日期:2004.2.1
[reaction: see text] Alpha-halonitriles react with organometallic reagents in a facile halogen-metal exchange. The halogen-metal exchange is extremely fast with Grignard and alkyllithium reagents, generating metalated nitriles in situ with aldehyde, ketone, acid chloride, and acyl cyanide electrophiles. Sequential halogen-metal exchange and methylation of conformationally constrained nitriles is highly
[反应:见正文]α-卤代腈与有机金属试剂反应,易于进行卤素-金属交换。用格氏试剂和烷基锂试剂进行卤素金属交换非常快,可与醛,酮,酰氯和酰基氰亲电试剂原位生成金属化的腈。构象受限的腈的顺序卤素金属交换和甲基化具有高度立体选择性,并且与C-镁化的腈的保持性烷基化相一致。