Additive-Free Pd-Catalyzed α-Allylation of Imine-Containing Heterocycles
作者:Marko Kljajic、Johannes G. Puschnig、Hansjörg Weber、Rolf Breinbauer
DOI:10.1021/acs.orglett.6b03407
日期:2017.1.6
An additive-free Pd-catalyzed alpha-allylation of different imino-group-ontaining heterocycles is reported. The activation of alpha-CH pronucleophiles (pK(a) (DMSO) > 25) occurs without the addition of strong bases or Lewis acids using only the Pd/Xantphos catalyst system. The reaction scope has been studied for various 5- and 6-membered nitrogen-containing heterocycles (yields up to 96%). Mechanistic investigations suggest an initial allylation of the imine-N followed by a Pd-catalyzed formal aza-Claisen rearrangement.
VITRONECTIN RECEPTOR ANTAGONISTS
申请人:SMITHKLINE BEECHAM CORPORATION
公开号:EP0869787A1
公开(公告)日:1998-10-14
EP0869787A4
申请人:——
公开号:EP0869787A4
公开(公告)日:1999-03-24
[EN] VITRONECTIN RECEPTOR ANTAGONISTS<br/>[FR] ANTAGONISTES DU RECEPTEUR DE LA VITRONECTINE
申请人:SMITHKLINE BEECHAM CORPORATION
公开号:WO1997024119A1
公开(公告)日:1997-07-10
(EN) Compounds of formulae (I-V) are disclosed which are vitronectin receptor antagonists and are useful in the treatment of osteoporosis.(FR) Composés des formules (I-V) constituant des antagonistes du récepteur de la vitronectine utiles pour le traitement de l'ostéoporose.