title: Enantio- and diastereodifferentiating cis,trans-photoisomerization of 2beta,3beta-diphenylcyclopropane-1alpha-carboxylic acid derivatives in organized media.
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.
authors.affiliation: Department of Chemistry, University of British Columbia, Vancouver, Canada V6T 1Z1.
authors.forename: E
authors.initials: E
authors.lastname: Cheung
authors.forename: K C
authors.initials: KC
authors.lastname: Chong
authors.forename: S
authors.initials: S
authors.lastname: Jayaraman
authors.forename: V
authors.initials: V
authors.lastname: Ramamurthy
authors.forename: J R
authors.initials: JR
authors.lastname: Scheffer
authors.forename: J
authors.initials: J
authors.lastname: Trotter