Organylzinc Chalcogenolate Promoted Michael-Type Addition of α,β-Unsaturated Carbonyl Compounds
作者:Vanessa Lóren Nunes、Ingryd Cristina de Oliveira、Olga Soares do Rêgo Barros
DOI:10.1002/ejoc.201301497
日期:2014.3
chalcogenide compounds promoted by organylzinc chalcogenolates. In this protocol, reductive cleavage of diorganyl dichalcogenide bonds by the Zn/NH4OH system led to organylzinc chalcogenolates. The reaction was performed with propiolic acids and esters and afforded β-organochalcogenacrylic acids and esters under mild basic conditions. The stereochemistry corresponded to anti-Markovnikov addition of the organyl
我们介绍了有机基锌硫属元素化物促进的乙烯基硫属元素化物化合物的化学、区域和立体选择性合成。在该协议中,Zn/NH4OH 系统对二有机二硫属化物键的还原裂解导致有机锌硫属元素酸盐。该反应用丙炔酸和酯进行,在温和的碱性条件下得到 β-有机硫代丙烯酸和酯。立体化学对应于跨三键的有机硫族化合物成分的反马尔科夫尼科夫加成。