Asymmetric synthesis of chiral sulfoxides and sulfinimines by using N-sulfinylsultam
摘要:
Bornane-10,2-sultam 1 is stereoselectively converted by DMAP-assisted sulfinylation to diastereomerically pure (2R)-N-[(R)-p-tolylsulfinyl]-bornane-10,2-sultam 2 in 77% yield. The crystalline sulfinylating agent 2 reacts with a variety of nucleophiles to afford sulfoxides 3 and sulfinimines 5 in excellent yields and enantioselectivities. (C) 1997 Elsevier Science Ltd.
Asymmetric nitrone-vinyl sulfoxide cycloadditions: a highly enantioselective synthesis of (+)-sedridine
作者:Chantal Louis、Claude Hootelé
DOI:10.1016/0957-4166(95)00287-y
日期:1995.9
Cycloaddition of 2,3,4,5-tetrahydropyridine-1-oxide 1 to (Z)-(R)-vinyl sulfoxides 2a-d proceeds in high yield to give isoxazolidines 3a-d and 4a-d with complete exo selectivity and with 82–98% asymmetricinduction. This method provides an efficient synthesis of the enantiomerically pure piperidine alkaloid (+)-sedridine 6a.
Asymmetric induction in nucleophilic addition to an αβ-unsaturated sulphoxide
作者:D. J. Abbott、S. Colonna、C. J. M. Stirling
DOI:10.1039/c29710000471
日期:——
The absolute configuration of the major diastereoisomer obtained by addition of piperidine to S(–)-cis-propenyl p-tolyl sulphoxide has been confirmed by synthesis and is in agreement with transition state predictions.
Antonjuk, David J.; Ridley, Damon D.; Smal, Mary A., Australian Journal of Chemistry, 1980, vol. 33, # 12, p. 2635 - 2651
作者:Antonjuk, David J.、Ridley, Damon D.、Smal, Mary A.
DOI:——
日期:——
A formal and enantioselective synthesis of (−)-serricornin, the sex pheromone of the cigarette beetle (lasioderma serricorne F.)
作者:J. Tércio、B. Ferreira、Jacqueline A. Marques、J.P. Marino
DOI:10.1016/0957-4166(94)80026-x
日期:1994.4
Asymmetric nitrone-vinyl sulfoxide cycloadditions
作者:Chantal Louis、Claude Hootelé
DOI:10.1016/s0957-4166(96)00480-6
日期:1997.1
The cycloaddition of (Z) and (E)-vinyl sulfoxides with cyclic nitrones 1 and 2 is reported. Best diastereoselection is achieved with (Z)-vinyl sulfoxides 7a-d as dipolarophiles. This methodology allows the highly stereoselective synthesis of (+)-sedridine 9a, (-)-hygroline 10 and (-)-(2S)-N-carbomethoxypelletierine 11a. (C) 1997, Elsevier Science Ltd. All rights reserved.