Cu(i)-catalyzed aerobic cross-dehydrogenative coupling of terminal alkynes with thiols for the construction of alkynyl sulfides
作者:Yong Yang、Weibing Dong、Yisong Guo、Robert M. Rioux
DOI:10.1039/c3gc41330f
日期:——
and selective aerobiccross-dehydrogenativecoupling of terminalalkynes with thiols to construct alkynyl sulfides catalyzed by Cu(I) using molecular oxygen as the oxidant has been demonstrated under mild reaction conditions. The process is applicable to a wide range of alkynes and various thiols and is compatible with a variety of functional groups on both alkyne and thiol coupling partners.
Stereoselective Synthesis of (<i>Z</i>)-<i>α</i>-Organothiovinyltosylates and their Application in the Synthesis of Highly Functionalized Vinylic Sulfides
作者:Antonio L. Braga、Daniel J. Emmerich、Claudio C. Silveira、Tales L. C. Martins、Oscar E. D. Rodrigues
DOI:10.1055/s-2001-11406
日期:——
Thioacetylenes 1 afford, upon treatment with p-toluenesulfonic acid in dichloromethane, (O,S)-ketene acetals 2 which can act as useful α-(organothio)vinyl carbocation equivalents, opening a novel route to functionalized vinylic sulfides.
Convenient preparation of alkynyl selenides, sulfides and tellurides from terminal alkynes and prenylchalcogenyl halides in the presence of copper(I) iodide
作者:Antonio L. Braga、Claudio C. Silviera、Aurélia Reckziegel、Paulo H. Menezes
DOI:10.1016/s0040-4039(00)61445-4
日期:1993.12
Alkynyl selenides, sulfides and tellurides were obtained under very mild conditions by reacting terminal alkynes with phenylchalcogenyl halides in the presence of copper iodide(I).
Vinylborane and vinylchalcogenide mediated synthesis of tri- and tetrasubstituted olefins from 1-alkynes
作者:Julien Gerard、Emerance Bietlot、Làszlò Hevesi
DOI:10.1016/s0040-4039(98)01938-8
日期:1998.11
The title olefins have been prepared with high regio- and stereocontrol from I-alkynes through vinyl boranes / vinyl chalcogenides; the reaction sequences involved protonolysis or transmetallation - alkylation of the boranes followed by an Ni(0) catalyzed coupling reaction. (C) 1998 Elsevier Science Ltd. All rights reserved.
Pyrolysis of α-acyl,α,-thio phosphoranes → thioacetylenes
作者:Antonio L. Braga、João V. Comasseto、Nicola Petragnani