Electrochemical-Induced C–N Bond Formation: A New Method to Synthesis (<i>Z</i>)-Quinazolinone Oximes Using Primary Amines and Quinazolin-4(3<i>H</i>)-one
作者:Zhi-Min Zong、Lizhu Zhang、Gan-Peng Li、Wei Wang、Xiao-Jing Zhao、Yonghui He
DOI:10.1021/acs.orglett.4c00107
日期:2024.2.16
A novel and highlyselective electrochemical method for the synthesis of diverse quinazolinone oximes via direct electrooxidation of primary amines/C(sp2)–H functionalization of oximes has been developed. The reaction is conducted in an undivided cell under constant current conditions and is oxidant-free, open-air, and eco-friendly. Notably, the protocol shows good functional group tolerance, providing
Ultra-small cobalt nanoparticles from molecularly-defined Co–salen complexes for catalytic synthesis of amines
作者:Thirusangumurugan Senthamarai、Vishwas G. Chandrashekhar、Manoj B. Gawande、Narayana V. Kalevaru、Radek Zbořil、Paul C. J. Kamer、Rajenahally V. Jagadeesh、Matthias Beller
DOI:10.1039/c9sc04963k
日期:——
situ generated cobalt nanoparticles from molecularly defined complexes as efficient and selective catalysts for reductive amination reactions. In the presence of ammonia and hydrogen, cobalt–salen complexes such as cobalt(II)–N,N′-bis(salicylidene)-1,2-phenylenediamine produce ultra-small (2–4 nm) cobalt-nanoparticles embedded in a carbon–nitrogen framework. The resulting materials constitute stable,