Oxidative amidation of benzaldehydes and benzylamines with<i>N</i>-substituted formamides over a Co/Al hydrotalcite-derived catalyst
作者:Shyam Sunder R. Gupta、Akhil V. Nakhate、Kalidas B. Rasal、Gunjan P. Deshmukh、Lakshmi Kantam Mannepalli
DOI:10.1039/c7nj03123h
日期:——
The present work describes a highly efficient synthetic strategy for amides via oxidative coupling of benzaldehydes or benzylamines with N-substituted formamides using a heterogeneous Co/Al hydrotalcite-derived catalyst in the presence of TBHP. A series of Co/Al hydrotalcite-derived catalysts (Cat-2, Cat-3, and Cat-4 with the Co2+/Al3+ molar ratio in the synthesis mixture as 1/1, 2/1 and 3/1) have
Herbicidal compounds of the formula: ##STR1## where X is oxygen or sulfur; R.sub.1 is methyl or ethyl; R.sub.2 is alkyl of 1-4 carbon atoms, methoxy or cyanomethyl; and R.sub.1 and R.sub.2 together can be (CH.sub.2).sub.4 ; provided that when R.sub.2 is alkyl of 3 or 4 carbon atoms, methoxy or cyanomethyl, R.sub.1 cannot be ethyl.