α的螯合辅助钯催化的C = C键的断裂,β不饱和酮向腈的存在形式烯腈,公开了一种正式基交换反应的配制为C的基础上,1 = C 2 + C 3 →C 1 = C 3 + C 2,从正常烯烃氧化裂解和复分解型不同。分离出的关键活性 Pd(II) 配合物以及氘标记实验揭示了螯合基团的必要性,并提出了一条合理的催化途径。
Catalytic α-olefination of nitriles using primary alcohols, via dehydrogenative coupling of alcohols with nitriles, is presented. The reaction is catalyzed by a pincer complex of an earth-abundant metal (manganese), in the absence of any additives, base, or hydrogen acceptor, liberating dihydrogen and water as the only byproducts.
Direct C-S Bond Functionalization of Benzyl Mercaptan
作者:Khokan Choudhuri、Milan Pramanik、Prasenjit Mal
DOI:10.1002/ejoc.202000521
日期:2020.7.7
Using 1,10‐phenanthroline as organocatalyst and t BuOK as base, cascaded activation of three different bonds: C(sp3)–H, benzylic C–S, and aryl–halide could be achievable in one pot.