Design of an Indolylphosphine Ligand for Reductive Elimination-Demanding Monoarylation of Acetone Using Aryl Chlorides
作者:Wai Chung Fu、Chau Ming So、Wing Kin Chow、On Ying Yuen、Fuk Yee Kwong
DOI:10.1021/acs.orglett.5b02344
日期:2015.9.18
elimination-demanding Pd-catalyzed mono-α-arylation of acetone is demonstrated and reported. The catalyst is tolerant of previously proven challenging electron-deficient aryl chlorides and provides excellent product yields with down to 0.1 mol % Pd. Preliminary investigations suggest that the rate-limiting step for the proposed system is the oxidative addition of aryl chlorides, in which it contradicts
[EN] COMPOUNDS AND THEIR METHODS OF USE<br/>[FR] COMPOSÉS ET PROCÉDÉS D'UTILISATION DESDITS COMPOSÉS
申请人:AGIOS PHARMACEUTICALS INC
公开号:WO2015143340A1
公开(公告)日:2015-09-24
Compounds and compositions comprising compounds that inhibit glutaminase are described herein. Also described herein are methods of using the compounds that inhibit glutaminase in the treatment of cancer.
Preparation of a Highly Congested Carbazoyl-Derived P,N-Type Phosphine Ligand for Acetone Monoarylations
作者:Wai Chung Fu、Zhongyuan Zhou、Fuk Yee Kwong
DOI:10.1021/acs.organomet.6b00154
日期:2016.5.23
We report a newly developed carbazoyl-derived P,N-type phosphine ligand (L1) for the monoarylation of acetone with aryl chlorides. The proposed Pd(dba)(2)/L1 catalyst exhibited remarkable catalytic reactivity toward highly electron rich and sterically congested aryl chlorides, with catalyst loading as low as 0.1 mol % of Pd along with excellent chemoselectivity. A reaction rate study of the system using electronically diverse aryl chlorides determined the mechanisms regarding the rate-limiting steps in this reaction. The oxidative addition adduct of Pd-PhenCar-Phos with p-chlorotoluene showed the participation of N-Pd coordination in the metal complex. The isolated palladium complex C1 could be utilized as a precatalyst in the transformation and achieved performance comparable to that of the in situ generated palladium species.