<i>ortho</i>-Amidoalkylation of Phenols via Tandem One-Pot Approach Involving Oxazine Intermediate
作者:Ramesh Mudududdla、Shreyans K. Jain、Jaideep B. Bharate、Ajai P. Gupta、Baldev Singh、Ram A. Vishwakarma、Sandip B. Bharate
DOI:10.1021/jo3017132
日期:2012.10.5
phenols via Mannich-typecondensation with formaldehyde and lactams using recyclable solid acid catalyst is described. This is the first report for ortho-amidoalkylation of phenols by lactams via Mannich-typecondensation. LC-ESI-MS/MS based mechanistic study revealed that reaction proceeds through o-quinone methide (o-QM) and an oxazine intermediate via tandem Knoevenagel condensation, formal [4 +