
Tetrahedron Letters p. 2685 - 2688 (1990)
Update date:2022-08-05
Topics:
Liddell, Paul A.
Olmstead, Marilyn M.
Smith, Kevin M.
Copper(II) promoted cyclizations of a,c-biladiene salts bearing large terminal (1′,8′) substituents afford intermediates which suffer a variety of cleavage and cyclization reactions, in a stepwise manner, to yield mono-mesosubstituted porphyrins, chlorins, and di-meso-substituted porphyrins via facile migration reactions.
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