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.
Stereoselective addition to chiral p-toluene sulfinimines
作者:Wing Hong Chan、Albert W.M Lee、Ping Fang Xia、Wai Yeung Wong
DOI:10.1016/s0040-4039(00)00949-7
日期:2000.7
Diastereoselective addition of a number of Grignard reagents to chiral p-toluene sulfinimines 2b–2d under the mediation of copper salts afforded various protected α-branched amines.
A New Access to the Synthesis of Optically Pure β-Aminosulfides
作者:Y. Arroyo、A. Meana、J. F. Rodríguez、M. Santos、M. A. Sanz-Tejedor、J. L. García Ruano
DOI:10.1080/10426500590913320
日期:2005.3.2
Stereocontrolled Reactions Mediated by a Remote Sulfoxide Group: Synthesis of Optically Pure <i>a</i><i>nti</i>-β-Amino Alcohols
作者:José L. García Ruano、José Alemán
DOI:10.1021/ol0358410
日期:2003.11.1
A one-step synthesis of enantiomerically pure anti-1,2-amino alcohol derivatives has been achieved by reaction of prochiral oxygenated 2-p-tolylsulfinylbenzyl carbanions with N-sulfinylimines bearing the same configuration at sulfur.
Diastereoselective Baylis–Hillman type reactions of chiral non-racemic N-sulfinimines with cyclopent-2-en-1-one
作者:Min Shi、Yong-Mei Xu
DOI:10.1016/s0957-4166(02)00269-0
日期:2002.6
In the Baylis-Hillman type reaction of chiral non-racemic N-sulfinimines 1 with cyclopent-2-en-1-one, we found that in the presence of a catalytic amount of the Lewis base PhPMe2 (10 mol%), diastereoselective reaction could be achieved in toluene at room temperature to give the normal Baylis-Hillman adducts 2 in good yields and high diastercoselectivities. (C) 2002 Elsevier Science Ltd. All rights reserved.
Asymmetric synthesis of chiral sulfoxides and sulfinimines by using N-sulfinylsultam
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.