Rhodium catalysed dehydrogenative borylation of alkenes: Vinylboronates via C–H activation
作者:Ibraheem A. I. Mkhalid、R. Benjamin Coapes、S. Natasha Edes、David N. Coventry、Fabio E. S. Souza、Rhodri Ll. Thomas、Jonathan J. Hall、Si-Wei Bi、Zhenyang Lin、Todd B. Marder
DOI:10.1039/b715584k
日期:——
We present herein a high yield, highly selective catalytic synthesis of vinylboronate esters (VBEs), including 1,1-disubstituted VBEs, from alkenes without significant hydrogenation or hydroboration, using the simple catalyst precursor, trans-[RhCl(CO)(PPh3)2] (1), and the diboron reagents B2pin2 (2a, pin = pinacolato = OCMe2CMe2O) or B2neop2 (2b, neop = neopentylglycolato = OCH2CMe2CH2O), or the monoboron
我们在本文中介绍了使用简单的催化剂前体反式-[RhCl(CO)(PPh3)从烯烃进行高产率,高选择性的催化合成,包括无明显氢化或硼氢化作用的烯烃,包括1,1-二取代的VBE。 [2](1),以及乙硼试剂B2pin2(2a,pin =品可乐醇= OCMe2CMe2O)或B2neop2(2b,neop =新戊基糖醇= OCH2CMe2CH2O)或单硼试剂HBpin,它们均可以商购获得。反应使用常规加热在80摄氏度下进行,或在150摄氏度的微波反应器中进行。