Enantioselective preparation of 2-substituted- 1,3-dithiane 1-oxides using modified sharpless sulphoxidation procedures
作者:Philip C. Bulman Page、Robin D. Wilkes、Emest S. Namwindwa、Michael J. Witty
DOI:10.1016/0040-4020(95)01029-7
日期:1996.2
carried out using modified Sharpless conditions to furnish the corresponding sulphoxides in optically enriched form. Deacylation of 2-acyl-1,3-dithiane 1-oxide derivatives allows the preparation of 2-alkyl-1,3-dithiane 1-oxides and the parent 1,3-dithiane 1-oxide itself in high enantiomeric excesses.
Anomalous C−C Bond Cleavage in Sulfur-Centered Cation Radicals Containing a Vicinal Hydroxy Group
作者:Zaiguo Li、Andrei G. Kutateladze
DOI:10.1021/jo035001z
日期:2003.10.1
1,3-dithianyl cationradicals having alpha-hydroxy-neopentyl or similar groups in position 2, which are generated via oxidative photoinducedelectrontransfer, undergo anomalous fragmentation necessitating refinement of the accepted mechanism. Experimental and computational data support a rationale in which proton abstraction from the hydroxy group in the initial cationradical does not cause a Grob-like
A CONVENIENT HIGH YIELD SYNTHESIS OF FUNCTIONAL METHACRYLATES <i>VIA</i> DETHIOACETALIZATION. SYNTHESIS OF METHACRYLATE S,S-ACETAL DERIVATIVES AS INTERMEDIATES
Abstract We describe a selective and efficient synthesis of a whole new class of functional methacrylates starting from S,S-acetals. Carbonyl compounds were regenerated from corresponding S,S-acetals using mercury (11) salts. According to this method, methacrylic sensitive group (possible polymerization), is not affected.
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.
HIROI K.; SATO S.; MATSUO K., CHEM. AND PHARM. BULL., 1980, 28, NO 2, 558-566