Transition-Metal-Free Borylation of Aryl Bromide Using a Simple Diboron Source
作者:Taeho Lim、Jeong Yup Ryoo、Min Su Han
DOI:10.1021/acs.joc.0c01065
日期:2020.8.21
reaction of aryl bromides. Bis-boronic acid (BBA), was used, and the borylation reaction was performed using a simple procedure at a mild temperature. Under mild conditions, aryl bromides were converted to arylboronic acids directly without any deprotection steps and purified by conversion to trifluoroborate salts. The functional group tolerance was considerably high. The mechanism study suggested that
Electro-alkynylation: Intramolecular Rearrangement of Trialkynylorganoborates for Chemoselective C(sp<sup>2</sup>)–C(sp) Bond Formation
作者:Arif Music、Constantin M. Nuber、Yannick Lemke、Philipp Spieß、Dorian Didier
DOI:10.1021/acs.orglett.1c01126
日期:2021.6.4
Electrochemical Synthesis of Biaryls via Oxidative Intramolecular Coupling of Tetra(hetero)arylborates
作者:Arif Music、Andreas N. Baumann、Philipp Spieß、Allan Plantefol、Thomas C. Jagau、Dorian Didier
DOI:10.1021/jacs.9b12300
日期:2020.3.4
scope, scalability and robustness of this unconventional catalyst-free transformation, leading to functional-ized biaryls and ultimately furnishing drug-like small molecules as well as late stage derivatization of natural compounds. In addition, the observed selectivity of the oxidative coupling reaction is related to the electronic structure of the TABs through quantum-chemical calculations and experimental
Nickel-Catalyzed Borylation of Halides and Pseudohalides with Tetrahydroxydiboron [B<sub>2</sub>(OH)<sub>4</sub>]
作者:Gary A. Molander、Livia N. Cavalcanti、Carolina García-García
DOI:10.1021/jo401104y
日期:2013.7.5
with palladium, combined with several limitations of both palladium- and copper-catalyzedprocesses, prompted us to develop an alternative method. Thus, the nickel-catalyzed borylation of aryl and heteroaryl halides and pseudohalides using tetrahydroxydiboron (BBA) has been formulated. The reaction proved to be widely functional group tolerant and applicable to a number of heterocyclic systems. To the