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Synlett 1998; 1998(5): 516-518
DOI: 10.1055/s-1998-1707
DOI: 10.1055/s-1998-1707
letter
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Use of the Bifunctional Reagent (Z)-4-Iodo-1-(tributylstannyl)but-1-ene: A New Cyclohexenone Annulation Method
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Publication History
Publication Date:
31 December 2000 (online)
A new cyclohexenone annulation method, based on the use of the bifunctional reagent (Z)-4-iodo-1-(tributylstannyl)but-1-ene (6) and exemplified by conversion of the substrate 8 into the annulated products 13 and 18 and of the starting materials 19-23 into the products 34-38, respectively, is described.
N,N-dimethylhydrazones - alkylation - tin-iodine exchange - lithium-iodine exchange - intramolecular addition of alkenyllithiums to ketones - oxidation of tertiary allylic alcohols to enones