gem-Bromonitro compounds or gem-dinitro compounds couple with carbanions derived from α-cyano sulfones or α-carbonyl sulfones to give β-nitro sulfones. The nitro and sulfonyl groups are eliminated from the coupling products on treatment with reductive one electron transfer reagents to give α,β-unsaturated carbonyl compounds or nitriles.
嵴
溴硝基化合物或嵴二
硝基化合物与衍生自 α-
氰基砜或 α-羰基砜的碳负离子偶联生成 β-硝基砜。硝基和磺酰基在用还原性单电子转移试剂处理后从偶联产物中消除,得到 α,β-不饱和羰基化合物或腈。