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2+2]-photocycloadditionasymmetric photoreactionatropselectivityaza Paternò–Büchi reactioniminesdoi:10.1002/anie.201782561Kumarasamy, ElangoKandappa, Sunil KumarRaghunathan, RamyaJockusch, SteffenSivaguru, JayaramanAngewandte Chemie International Edition...
doi:10.1002/1521-3765(20001016)6:20<3838::aid-chem3838>3.0.co;2-1Thorsten BachHarm BrummerhopKlaus HarmsNierengarten J-F (2000) Chem Eur J 6:3667–3670 View ArticleBach, T.; Brummerhop, H.; Harms, K. The Synthesis of (+)-preussin and related pyrrolidinols by diastereoselective ...
The substituents R in the silyl enol ether have been varied [R = Me, Et, i Pr, t Bu, Ph, CH(OMe)2, CH(OCH2)2, C(OCH2)2Me], and it was found that steric bulk is mainly responsible for enhanced selectivity (diastereoselectivity from 70:30 up to 95:5). The regiochemical ...