Reactions of alkylidenepyrrolidines with α-chlorooximes and α-chlorohydrazones
作者:Cevher Altuğ、Yasar Dürüst、Mark C. Elliott
DOI:10.1016/j.tetlet.2009.10.086
日期:2009.12
The reactions of alkylidenepyrrolidines with alpha-chlorooximes give isoxazoles via an acylation reaction followed by ring isomerisation. In contrast, and in line with a previous report, the corresponding alpha-chlorohydrazones give the simple acylation products. although in one instance a cycloadduct was also obtained. (C) 2009 Elsevier Ltd. All rights reserved.
Reaction of heterocyclic enamines with nitrile oxide and nitrilimine precursors
作者:Cevher Altuğ、Yasar Dürüst、Mark C. Elliott、Benson M. Kariuki、Tillique Rorstad、Mark Zaal
DOI:10.1039/c0ob00286k
日期:——
Alkylidenepyrrolidines 1, 21, 24 and 26 undergo reactions with nitrile oxides and nitrilimines or their precursors to give a range of novel heterocycliccompounds. With alkylidenepyrrolidine ester 1, nitrolic acids give products in which the liberated nitrous acid reacts with the alkylidenepyrrolidine, followed by two cycloadditions to give adducts 3. In contrast, hydroximoyl chlorides give isoxazoles