converted into secondary alkyllithium and secondary alkylcopper compounds with very high retention of configuration. Quenching with various electrophiles, including chiral epoxides, provided a range of chiral molecules with high enantiomericpurity (>90 % ee). This method has been applied in an iterative fashion in the total synthesis of (−)‐lardolure in 13 steps and 5.4 % overall yield (>99 % ee, dr>99:1)
A Concise and Atom-Economical Suzuki–Miyaura Coupling Reaction Using Unactivated Trialkyl- and Triarylboranes with Aryl Halides
作者:Hongmei Li、Yong-Li Zhong、Cheng-yi Chen、Ashley E. Ferraro、Dengjin Wang
DOI:10.1021/acs.orglett.5b01720
日期:2015.7.17
A concise and atom-economical Suzuki-Miyaura coupling of trialkyl- and triarylboranes with aryl halides is described. This new protocol represents the first general, practical method that efficiently utilizes peralkyl and peraryl groups of the unactivated trialkyl- and triarylboranes for the Suzuki-Miyaura coupling reaction.
DAVY H.; DECROUEN J.-M., BULL. SOC. CHIM. FRANCE <BSCF-AS>, 1976, NO 1-2, PART. 2, 115-119
作者:DAVY H.、 DECROUEN J.-M.
DOI:——
日期:——
C–H Bond Functionalization via Hydride Transfer: Formation of α-Arylated Piperidines and 1,2,3,4-Tetrahydroisoquinolines via Stereoselective Intramolecular Amination of Benzylic C–H Bonds
作者:Paul A. Vadola、Ignacio Carrera、Dalibor Sames
DOI:10.1021/jo300635m
日期:2012.8.17
We here report a study of the intramolecular amination of sp3 C–H bonds via the hydride transfer cyclization of N-tosylimines (HT-amination). In this transformation, 5-aryl aldehydes are subjected to N-toluenesulfonamide in the presence of BF3·OEt2 to effect imine formation and HT-cyclization, leading to 2-arylpiperidines and 3-aryl-1,2,3,4-tetrahydroisoquinolines in a one-pot procedure. We examined