Platinum(IV)-Mediated Nitrile-Amidoxime Coupling Reactions: Insights into the Mechanism for the Generation of 1,2,4-Oxadiazoles
作者:Dmitrii S. Bolotin、Nadezhda A. Bokach、Matti Haukka、Vadim Yu. Kukushkin
DOI:10.1002/cplu.201100047
日期:2012.1
platinum(IV) complexes trans‐[PtCl4(RCN)2] (1: R=Et, 2: Ph, 3: NMe2) proceeds in a 1:1 molar ratio and leads to the monoaddition products [PtCl4(RCN)HNC(R)ONC(R′)NH2}] (7: R/R′: Et/CH2Ph, 8: Et/Ph, 9: NMe2/CH2Ph, 10: NMe2/Ph). Meanwhile, if the nucleophilic addition proceeds in a 2:1 molar ratio the reaction gives the bisaddition species [PtCl4HNC(R)ONC(R′)NH2}2] (11: R/R′=Et/Me, 12: Et/CH2Ph, 13:
mid胺肟R'C(NH 2)NOH(4:R'= Me,5:CH 2 Ph,6:Ph)亲核加成到铂(IV)络合物反式-[PtCl 4(RCN)中2 ](1:R =的Et,2:pH值,3:NME 2)前进以1:1的摩尔比,并导致单加成产物[氯铂酸4(RCN)H ñ C(R)ONC(R' )NH 2 }](7:R / R':Et / CH 2 Ph,8:Et / Ph,9:NMe 2 / CH2 Ph,10:NMe 2 / Ph)。同时,如果在一个2的亲核加成来进行:1的摩尔比反应给出bisaddition物种[氯铂酸4 H Ñ C(R)ONC(R')NH 2 } 2 ](11:R / R'=的Et / Me,12:Et / CH 2 Ph,13:Et / Ph,14:Ph / Ph,15:NMe 2 / Me,16:NMe 2 / CH 2 Ph,17:NMe 2 / Ph。所有建筑群7