A one-pot regioselective synthetic route to vinyl sulfones from terminal epoxides in aqueous media
作者:Ruchi Chawla、Ritu Kapoor、Atul K. Singh、Lal Dhar S. Yadav
DOI:10.1039/c2gc16664j
日期:——
A highly efficient LiBr catalysed regioselective synthesis of vinyl sulfones from readily available terminal epoxides and sodium sulfinates in a one-pot procedure using water as a reaction medium is reported. The protocol is adorned with several attributes of green chemistry like recycling of the catalyst, atom-economy and an aqueous medium.
Complementary Strategy for Regioselective Synthesis of Diverse β-Hydroxysulfones from Thiosulfonates
作者:Soobin Son、Pranab K. Shyam、Hyowon Park、Ilgyo Jeong、Hye-Young Jang
DOI:10.1002/ejoc.201800778
日期:2018.7.6
Regioselectivesynthesis of diverse β‐hydroxysulfones is conducted via sulfonylation; the reactions of alkenes with thiosulfonates provided 2° and 3° β‐hydroxysulfones, and the reactions of epoxides with thiosulfonates afforded 1° and 2° β‐hydroxysulfones in good yields.
House-Meinwald rearrangement of aryl-substituted epoxysulfones in hexafluoroisopropanol (HFIP)
作者:Alexandria Uritis、Hannah Phillips、Hunter Phillips、Thomas C. Coombs
DOI:10.1016/j.tetlet.2023.154716
日期:2023.9
β-Aryl-substituted α,β-epoxysulfones undergo House-Meinwald rearrangement to form α-aryl, α-sulfonyl aldehydes in high yields upon dissolution in hexafluoroisopropanol (HFIP), and in some cases, heating. These compounds are typically isolated as the corresponding alcohols following reduction with NaBH4. The β-aryl group is generally required for rearrangement and a variety of substitution patterns
Various P-hydroxyl sulfones are prepared by regioselective ring opening of epoxides with sodium salt of sulfinate on water. This is an efficient protocol which avoids hazardous and moisture sensitive catalysts. (C) 2009 Elsevier Ltd. All rights reserved.