Conversion of 3,3,3-Trisubstituted Prop-1-ynes with <i>tert</i>-Butylhydrazine into 3,3,3-Trisubstituted Propionitriles Catalyzed by TpRh(C<sub>2</sub>H<sub>4</sub>)<sub>2</sub>/P(2-furyl)<sub>3</sub>
作者:Yoshiya Fukumoto、Yuto Tamura、Yasuaki Iyori、Naoto Chatani
DOI:10.1021/acs.joc.6b00116
日期:2016.4.15
tris(pyrazol-1-yl)borate) and P(2-furyl)3 catalyzes the reaction of tertiary alkyl-substituted alkynes with tert-butylhydrazine, leading to the formation of 3,3,3-trisubstituted propionitrile derivatives. This reaction system is applicable to 1,1-disubstituted propargyl alcohols and amines to afford the corresponding β-cyanohydrins and β-amino nitriles, respectively. The catalytic cycle involves the formation
TpRh(C 2 H 4)2(Tp =三(吡唑-1-基)硼酸酯)和P(2-呋喃基)3的组合催化叔烷基取代的炔烃与叔丁基肼的反应,导致形成3,3,3-三取代的丙腈衍生物。该反应体系适用于1,1-二取代的炔丙醇和胺,分别得到相应的β-氰醇和β-氨基腈。催化循环涉及形成乙烯基亚乙基络合物作为关键中间体。