1,1-, 1,2-, and 1,4-eliminations from the corresponding dihalogenated compounds using Bu3SnSiMe3-F−
作者:Hiroki Sato、Naohiro Isono、Irie Miyoshi、Miwako Mori
DOI:10.1016/0040-4020(96)00376-6
日期:1996.6
1-, 1,2-, or 1,4- elimination of an aryl or vinyl halide with an appropriate leaving group at the α-, β-, or δ-position of halogen. Thus, alkylidene carbene 8 is generated from 1,1-dihalo-alkene 6 or 7 and benzyne 10 is generated from 1,2-dibromobenzene 9 and an o-quinodimethane 12 was produced from α,α′-dibromoxylene 11 a.
在非常温和的条件下,在DMF中,在R 4 NX,CsF或TASF [(Et 2 N)3 SSiMe 3 F 2 ] 7存在下,由Me 3 SiSnBu 3(1)6生成的苯乙烯基阴离子2,用于8在卤素的α-,β-或δ位置带有适当离去基团的芳基或乙烯基卤化物的1,1-,1,2-或1,4-消除。因此,亚烷基卡宾8由1,1-二卤代烯烃6或7产生,而苯并炔10由1,2-二溴苯9产生。和ø -quinodimethane 12从α,α'-二溴二甲苯产生11一个。