enantioselective allylicamination of acyclic allylic carbonates catalyzed by a palladium/(S)-BINAP(S) system was investigated. Amination of several substrates proceeded with high ee. Crotyl carbonates show an unusually high regioselectivity for the branched isomer. The use of (S)-TolBINAP(S) and (S)-3,5-xylyl-BINAP(S) as ligands was found to increase the enantioselectivity of the aminations. A P,S binding
A Highly Enantioselective Allylic Amination Reaction Using a Commercially Available Chiral Rhodium Catalyst: Resolution of Racemic Allylic Carbonates
作者:Derek C. Vrieze、Garrett S. Hoge、Perrine Z. Hoerter、Jared T. Van Haitsma、Brian M. Samas
DOI:10.1021/ol901031b
日期:2009.7.16
A novel method for the kinetic resolution of unsymmetrical acyclic allylic carbonates and the concurrent synthesis of enantioenriched secondaryamines using a commercially available chiral catalyst is disclosed.
Asymmetric allylic amination catalyzed by chiral ferrocenylphosphine-palladium complexes
作者:Tamio Hayashi、Kohei Kishi、Akihiro Yamamoto、Yoshihiko Ito
DOI:10.1016/s0040-4039(00)88870-x
日期:1990.1
A palladiumcomplex bearing chiral (hydroxyalkyl)ferrocenylphosphine ligand was found to be a highly regio-and stereoselective catalyst for the asymmetric allylic amination of 2-butenyl acetates with benzylamine, the nucleophilicattack of the amine taking place selectively on the more substituted end of the π-allylpalladium intermediate to give optically active 3-benzyamino- 1-butene of up to 84%
Enantio- and Diastereoselective Syntheses of 3-Hydroxypiperidines through Iridium-Catalyzed Allylic Substitution
作者:Johannes Hoecker、Georg C. Rudolf、Florian Bächle、Steffen Fleischer、Benjamin D. Lindner、Günter Helmchen
DOI:10.1002/ejoc.201300445
日期:2013.8
Stereoselective syntheses of 3-hydroxypiperidines have been developed. Key intermediates are N-protected allylamines that are prepared by an enantioselective iridium-catalyzedallylic amination. A subsequent catch and release procedure that involves an epoxidation and base-mediated elimination yields δ-lactams that are suitably functionalized to prepare biologically active 3-hydroxypiperidines. In addition
已经开发了 3-羟基哌啶的立体选择性合成。关键中间体是通过对映选择性铱催化的烯丙胺化反应制备的 N 保护的烯丙胺。随后的捕获和释放程序涉及环氧化和碱介导的消除,产生 δ-内酰胺,其被适当地官能化以制备具有生物活性的 3-羟基哌啶。此外,还描述了该方法在脱氧甘露野尻霉素、D-赤型鞘氨醇和对药物化学感兴趣的手性构件的全合成中的应用。
Madrahimov, Sherzod T.; Markovic, Dean; Hartwig, John F., Journal of the American Chemical Society, 2009, vol. 131, p. 7228 - 7229
作者:Madrahimov, Sherzod T.、Markovic, Dean、Hartwig, John F.