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Reductive Cyclizations of Hydroxysulfinyl Ketones:  Enantioselective Access to Tetrahydropyran and Tetrahydrofuran Derivatives

The stereocontrolled formation of cis-2,5-disubstituted tetrahydrofurans and cis-2,6-disubstituted tetrahydropyrans is achieved from enantiopure ketosulfinyl esters by reduction, Weinreb's amide, and ketone formation, followed by the reductive cyclization (Et3SiH/TMSOTf) of the resulting hydrox...

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Published in:Journal of organic chemistry 2003-10, Vol.68 (20), p.7779-7787
Main Authors: Carreño, M. Carmen, Des Mazery, Renaud, Urbano, Antonio, Colobert, Françoise, Solladié, Guy
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cited_by cdi_FETCH-LOGICAL-a445t-ef0c859bf5c7d8dc46fdf81bfe33f42d9e963162b6b2869c9a647b335d8f0b5c3
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description The stereocontrolled formation of cis-2,5-disubstituted tetrahydrofurans and cis-2,6-disubstituted tetrahydropyrans is achieved from enantiopure ketosulfinyl esters by reduction, Weinreb's amide, and ketone formation, followed by the reductive cyclization (Et3SiH/TMSOTf) of the resulting hydroxysulfinyl ketones. The sulfoxide-bearing heterocycles were transformed into two natural products, (−)-centrolobine (1) and both enantiomers of cis-(6-methyltetrahydropyran-2-yl)acetic acid (2).
doi_str_mv 10.1021/jo034817x
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source American Chemical Society:Jisc Collections:American Chemical Society Read & Publish Agreement 2022-2024 (Reading list)
subjects Chemistry
Exact sciences and technology
Heterocyclic compounds
Heterocyclic compounds with o, s, se, te hetero atom and condensed derivatives
Organic chemistry
Preparations and properties
title Reductive Cyclizations of Hydroxysulfinyl Ketones:  Enantioselective Access to Tetrahydropyran and Tetrahydrofuran Derivatives
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