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Solvent effects in copper(I)-mediated 5-endo cyclisation of secondary bromo-enamides
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UNSPECIFIED (2001) Solvent effects in copper(I)-mediated 5-endo cyclisation of secondary bromo-enamides. COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE C-CHIMIE, 4 (7). pp. 575-579. ISSN 1387-1609.
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Abstract
Secondary bromoenamides 5, 14-18, 32 and 33 undergo efficient 5-endo cyclisation reactions to give alpha,beta -unsaturated monoene lactams 9, 19-23, 34 and 35 under atom transfer conditions mediated by CuBr and the tripyridylamine 6 in refluxing toluene (59-87%). Changing the solvent to refluxing 1,2-dichloroethane furnishes alpha,beta -unsaturated diene lactams 26-3, 36, and 37 instead (42-86%). (C) 2001 Academie des sciences / Editions scientifiques et medicales Elsevier SAS.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Journal or Publication Title: | COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE C-CHIMIE | ||||
Publisher: | EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER | ||||
ISSN: | 1387-1609 | ||||
Official Date: | July 2001 | ||||
Dates: |
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Volume: | 4 | ||||
Number: | 7 | ||||
Number of Pages: | 5 | ||||
Page Range: | pp. 575-579 | ||||
Publication Status: | Published |
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