Chi può governare Napoli? 作者:R·Russo Jervolino ISBN:9788820043650 豆瓣评分 目前无人评价 评价: 写笔记 写书评 加入购书单 分享到 推荐
Diastereomerically pure 3-[(trimethylsilyl)oxy]oxetanes 3 were prepared in moderate to good yields (45-72%) by the Patern-Bchi reaction of silyl enol ethers 2 with benzaldehyde. The photocycloaddition exhibits a high degree of regio- and diastereoselectivity. The substituents R in the silyl ...
2+2]-photocycloadditionasymmetric photoreactionatropselectivityaza Paternò–Büchi reactioniminesdoi:10.1002/anie.201782561Kumarasamy, ElangoKandappa, Sunil KumarRaghunathan, RamyaJockusch, SteffenSivaguru, JayaramanAngewandte Chemie International Edition...
The face differentiation in 2-substituted 2,3-dihydropyrroles is presumably due to the nonplanarity of these heterocycles, which forces attack of the carbonyl group on the face with the existing substituent. All-cis-pyrrolidinols are consequently formed after hydrogenolysis. Following this route...