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Preparation of a resin-based chromium catalyst for effecting [6pi + 2pi] cycloaddition reactions
J H Rigby1, M A Kondratenko, C Fiedler
1Department of Chemistry, Wayne State University, Detroit, Michigan 48202-3489, USA. jhr@chem.wayne.edu
Organic Letters
|December 2, 2000
Abstract:
[reaction: see text] A resin-based chromium catalyst for performing [6pi + 2pi] cycloaddition reactions has been prepared from chloromethylated polystyrene. The catalyst provides cycloadducts in yields comparable to the photochemical and thermal versions of these transformations, and the process is effective with a wide range of 6pi and 2pi reaction partners.