Catalytic Asymmetric Hydrogenation of N-Boc-Imidazoles and Oxazoles
摘要:
Substituted imidazoles and oxazoles were respectively hydrogenated into the corresponding chiral imidazolines and oxazolines (up to 99% ee). The highly enantioselective hydrogenation was achieved by using the chiral ruthenium catalyst, which is generated from Ru(eta(3)-methallyl)(2)(cod) and a trans-chelating chiral bisphosphine ligand, PhTRAP. This is the first successful catalytic asymmetric reduction of 5-membered aromatic rings containing two or more heteroatoms.
[EN] METHODS AND SYSTEMS FOR SELECTIVE FLUORINATION OF ORGANIC MOLECULES<br/>[FR] PROCÉDÉS ET SYSTÈMES DE FLUORATION SÉLECTIVE DES MOLÉCULES ORGANIQUES
申请人:CALIFORNIA INST OF TECHN
公开号:WO2008016709A2
公开(公告)日:2008-02-07
(EN) A method and system for selectively fluorinating organic molecules on a target site wherein the target site is activated and then fluorinated are shown together with a method and system for identifying a molecule having a biological activity.(FR) La présente invention se rapporte à un procédé et à un système de fluoration sélective des molécules organiques sur un site cible, dans lesquels le site cible est activé puis fluoré, ainsi qu'un procédé et un système d'identification d'une molécule possédant une activité biologique.