Ring Enlargement of Dichloromethylcyclohexadienones via Polystyrene-Supported Organotin Hydride
- 1 January 1994
- journal article
- letter
- Published by Georg Thieme Verlag KG in Synlett
- Vol. 1994 (05) , 363-365
- https://doi.org/10.1055/s-1994-22855
Abstract
The ring-enlargement of dichloromethylcyclohexadienonederivatives to tropone nuclei via organotin hydrides has been expanded and improved. It can be performed without contamination of the product with toxic tin by-products. The employed polymer-supported organotin hydride and its consecutive products can easily be separated from reaction mixtures by simple filtration. Examples of methyl- and benzotropones are given. The yield of the synthesis via polystyrene-supported organotin hydrides has been compared with those of the formation via tri-n-butyltin hydride (TBTH).Keywords
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