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