Lan He
University of Hong Kong
4 Papers
1 Citations
Lan He is an academic researcher from University of Hong Kong. The author has contributed to research in topics: Regioselectivity & Intramolecular force. The author has an hindex of 2, co-authored 4 publications.
Chat about Author
Papers
Investigation on the regioselectivities of intramolecular oxidation of unactivated C-H bonds by dioxiranes generated in situ.
TL;DR: It is proposed that dioxiranes generated in situ from ketones 1-6 and Oxone underwent intramolecular oxidation of unactivated C-H bonds at delta sites of ketones to yield tetrahydropyrans through a concerted pathway under a spiro transition state.
48
Substituent effects on regioselective intramolecular oxidation of unactivated C-H bonds: stereoselective synthesis of substituted tetrahydropyrans.
TL;DR: This work examined the effects of alkyl, nitrogen, and oxygen substituents at the alpha-, beta-, and gamma-sites of ketones on the stereoselectivities of intramolecular C-H bond oxidation reactions, which offers a novel approach to the synthesis of tetrahydropyrans.
34
Substituent Effects on Regioselective Intramolecular Oxidation of Unactivated C—H Bonds: Stereoselective Synthesis of Substituted Tetrahydropyrans.
TL;DR: In this paper, the effects of alkyl, nitrogen, and oxygen substituents at the α-, β-, and γ-sites of ketones on the stereoselectivities of intramolecular C−H bond oxidation reactions were examined.
Investigation on the Regioselectivities of Intramolecular Oxidation of Unactivated C—H Bonds by Dioxiranes Generated in situ.
TL;DR: In this paper, the intramolecular oxidation of ketone 6 showed the preference for a tertiary δ C−H bond over a secondary one, which can be extended to the oxidation of the tertiary β-C−H bonds of ketones 9 and 10.