Journal
TETRAHEDRON LETTERS
Volume 51, Issue 37, Pages 4890-4893Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2010.07.055
Keywords
Cyclization; Heterocycles; Oxime; Zirconium
Categories
Funding
- Ministry of Education, Science, Sports and Culture
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gamma,delta-Unsaturated O-methyl oximes were cyclized to dihydropyrrole by the treatment of (1-butene)ZrCp2 3 prepared by Negishi's procedure (reaction with Cp2ZrCl2 and two equivalents of n-BuLi). In this cyclization, the geometry of oximes was affected and syn-oximes were cyclized efficiently. However, it was found that the anti-oxime is not suitable for the cyclization. (C) 2010 Elsevier Ltd. All rights reserved.
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