Ring-closing metathesis and ring-closing metathesis–isomerisation approach to 1-phosphonylated 2-benzazocines
摘要:
An RCM strategy has been developed for the synthesis of phosphonylated benzazocines and their corresponding isomerised analogues. The aminophosphonate precursors were obtained by a one-pot three-component condensation in moderate yield. (c) 2008 Elsevier Ltd. All rights reserved.
A general intermolecular polarity-mismatched carboamination reaction of unactivated alkenes with unactivated alkyl halides has been developed. A series of nonactivated alkyl-substituted aziridines were constructed in exclusive regioselectivity. The dual polarity-mismatched mechanism might be involved.
Metal-Free Entry to Phosphonylated Isoindoles by a Cascade of 5-<i>exo</i>-dig Cyclization, a [1,3]-Alkyl Shift, and Aromatization under Microwave Heating
作者:Nicolai Dieltiens、Christian V. Stevens
DOI:10.1021/ol062817o
日期:2007.2.1
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.