Enantio- and diastereodifferentiating cis,trans-photoisomerization of 2beta,3beta-diphenylcyclopropane-1alpha-carboxylic acid derivatives in organized media |
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| Authors: | Cheung E Chong K C Jayaraman S Ramamurthy V Scheffer J R Trotter J |
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| Institution: | Department of Chemistry, University of British Columbia, Vancouver, Canada V6T 1Z1. |
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| Abstract: | reaction: see text] Four methods of asymmetric induction in the cis, trans-photoisomerization of 2beta, 3beta-diphenylcyclopropane-1alpha-carboxylic acid derivatives were studied. Best results (ca. 80% de) were obtained by irradiation of chiral esters, amides, and salts in NaY and LiY zeolites and in the pure crystalline state. |
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