Highly chemoselective osmium-mediated dihydroxylation of 2-vinyl and 2-allyl-1,3-dithiane 1-oxides
摘要:
Chemoselective dihydroxylation of the double bonds of alkenyl-substituted 1,3-dithiane 1-oxide derivatives takes place without competing sulfur oxidation using osmium trichloride and potassium Ferricyanide. (C) 1998 Elsevier Science Ltd. All rights reserved.
Palladium‐Catalyzed Allylic Alkylation of 2‐Aryl‐1,3‐Dithianes, an Umpolung Synthesis of β,γ‐Unsaturated Ketones
作者:Nisalak Trongsiriwat、Minyan Li、Ana Pascual‐Escudero、Baris Yucel、Patrick J. Walsh
DOI:10.1002/adsc.201801035
日期:2019.2
at room temperature is described. A variety of cyclic and acyclic electrophiles successfully coupled with in‐situ generated 2‐sodio‐1,3‐dithiane nucleophiles to afford the allylated products in good to excellent yields (25 examples). Deprotection of these products leads to valuable β,γ‐unsaturated ketones. Direct synthesis of such β,γ‐unsaturated ketones via a one‐pot allylation‐oxidation protocol is
Sulfur-Directed Olefin Oxidations: Observation of Divergent Reaction Mechanisms in the Palladium-Mediated Acetoxylation of Unsaturated Thioacetals
作者:Sam E. Mann、Abil E. Aliev、Graham J. Tizzard、Tom D. Sheppard
DOI:10.1021/om2000585
日期:2011.4.11
Highly chemoselective osmium-mediated dihydroxylation of 2-vinyl and 2-allyl-1,3-dithiane 1-oxides
作者:Philip C Bulman Page、Michael J Mckenzie、Derek R Buckle
DOI:10.1016/s0040-4020(98)00923-5
日期:1998.11
Chemoselective dihydroxylation of the double bonds of alkenyl-substituted 1,3-dithiane 1-oxide derivatives takes place without competing sulfur oxidation using osmium trichloride and potassium Ferricyanide. (C) 1998 Elsevier Science Ltd. All rights reserved.