Addition of germyl anions to aliphatic ketones and α,β-unsaturated ketones
摘要:
Trimethylgermyllithium reacts with aliphatic ketones and alpha,beta-unsaturated ketones to give the corresponding trimethylgermylcarbinols stereoselectively and enolates of 3-germyl ketones regioselectively.
Novel (Trimethylgermyl)copper(I) Reagents: Preparation and Addition to α,β-Unsaturated Ketones and α,β-Alkynic Esters
作者:Edward Piers、René M. Lemieux
DOI:10.1021/om980537+
日期:1998.9.1
the novel (trimethylgermyl)cuprates (Me3Ge)2CuLi (2), Me3GeCu(CN)Li (3), (Me3Ge)2Cu(CN)Li2 (4), and Me3Ge(Me)Cu(CN)Li2 (5) is described. (Trimethylgermyl)copper(I) reagents add, in a 1,4-fashion, to α,β-unsaturated ketones and α,β-alkynic esters.
Stereochemistry of the Reactions of Trimethylgermyl Anions with 4-<i>t</i>-Butylcyclohexyl Derivatives
作者:Kunio Mochida、Tsuyoshi Kugita
DOI:10.1246/bcsj.61.3727
日期:1988.10
The stereochemistry of trimethylgermyllithium, -sodium, and -potassium with cis- and trans-4-t-butylcyclohexyl bromides and trimethylstannanes was investigated by 1H NMR spectroscopy. With the 4-t-butylcyclohexyl derivatives trimethylgermyl anions gave mixtures of cis- and trans-4-t-butylcyclohexyltrimethylgermanes. These results confirmed that free-radical pathways are important in such reactions
通过 1 H NMR 光谱研究了三甲基锗基锂、-钠和-钾与顺-和反-4-叔丁基环己基溴化物和三甲基锡烷的立体化学。使用4-叔丁基环己基衍生物,三甲基锗基阴离子得到顺式和反式4-叔丁基环己基三甲基锗烷的混合物。这些结果证实自由基途径在此类反应中很重要。
The effect of substituents on the structure and reactivity of organogermanium anions