Metal-Free Entry to Phosphonylated Isoindoles by a Cascade of 5-exo-dig Cyclization, a [1,3]-Alkyl Shift, and Aromatization under Microwave Heating
摘要:
When o-ethynylbenzyl alpha-aminophosphonates are heated under microwave conditions, a rearrangement occurs which results in the formation of phosphonylated isoindoles. The rearrangement consists of a 5-exo-dig cyclization followed by a [1,3]-alkyl shift and finally aromatization.
A novel, chemically robust, amine releasing linker
作者:Corinne Kay、Peter John Murray、Lisa Sandow、Andrew B. Holmes
DOI:10.1016/s0040-4039(97)01627-4
日期:1997.9
A polymer supported sulfonamide 1, based on an amine protective group, has been developed as a novel linker for solid phase organic synthesis. The linker permits the immobilisation of alcohol substrates, and releases N-protected amines under mild nucleophilic cleavage conditions. (C) 1997 Elsevier Science Ltd.