Basak, Amit ; Shain, Jagadish Chandra ; Khamrai, Uttam Kumar ; Rudra, Kakali Rani ; Basak, Ajoy (2000) Nitrogen substituted cyclic enediynes: synthesis, thermal reactivity and complexation with metal ions Journal of the Chemical Society Perkin transactions 1 (12). pp. 1955-1964. ISSN 0300-922X
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Related URL: http://dx.doi.org/10.1039/b000963f
Abstract
A number of N-substituted cyclic enediynes (azaenediynes) have been synthesized via Pd(0)-catalysed ene-yne coupling followed by N-alkylation. The simplest of them, a 10-membered monocyclic enediyne 1, underwent Bergman cyclization (BC) at 23°C with a half-life of 72 h. The kinetics of BC slowed down considerably by fusing a benzene ring onto the enediyne. Several novel bis(azaenediyne)s and bis(diazaenediyne)s 3-6 have been synthesized. Their onset temperatures for BC were lowered under metal ion complexation conditions.
Item Type: | Article |
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Source: | Copyright of this article belongs to Royal Society of Chemistry. |
ID Code: | 1670 |
Deposited On: | 05 Oct 2010 09:51 |
Last Modified: | 16 May 2016 12:45 |
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