Silver-Catalyzed Radical Fluorination of Alkylboronates in Aqueous Solution
摘要:
We report herein an efficient and general method for the deboronofluorination of alkylboronates. Thus, with the catalysis of AgNO3, the reactions of various alkylboronic acids or their pinacol esters with Selectfluor reagent in acidic aqueous solution afforded the corresponding alkyl fluorides under mild conditions. A broad substrate scope and wide functional group compatibility were observed. A radical mechanism is proposed for this site-specific fluorination.
Practical and Modular Construction of C(sp<sup>3</sup>)-Rich Alkyl Boron Compounds
作者:Yangyang Yang、Jet Tsien、Ayala Ben David、Jonathan M. E. Hughes、Rohan R. Merchant、Tian Qin
DOI:10.1021/jacs.0c11964
日期:2021.1.13
Alkyl boronic acids and esters play an important role in the synthesis of C(sp3)-rich medicines, agrochemicals, and material chemistry. This work describes a new type of transition-metal-free mediated transformation to enable the construction of C(sp3)-rich and sterically hindered alkyl boron reagents in a practical and modular manner. The broad generality and functional group tolerance of this method
Modular Synthesis of Polysubstituted Quinolin-3-amines by Oxidative Cyclization of 2-(2-Isocyanophenyl)acetonitriles with Organoboron Reagents
作者:Shihui Wang、Jian Xu、Qiuling Song
DOI:10.1021/acs.orglett.1c02373
日期:2021.9.3
quinolin-3-amines. 2-(2-Isocyanophenyl)acetonitriles and organoboronreagents are suitable substrates for this reaction. The remarkable advantages of this protocol are the practical method, mild approach, high reaction efficiency, and good compatibility of functional groups, providing straightforward access to functional quinoline derivatives.
Manganese-Mediated C−H Alkylation of Unbiased Arenes Using Alkylboronic Acids
作者:Susana Castro、Juan J. Fernández、Francisco J. Fañanás、Rubén Vicente、Félix Rodríguez
DOI:10.1002/chem.201601482
日期:2016.6.27
development of new strategies to synthesize alkyl arenes is a highly desirable goal, and herein, we present an alternative method to those conventional reactions. Particularly, a simple protocol for the direct C−H alkylation of unbiased arenes with alkylboronic acids in the presence of Mn(OAc)3⋅2H2O is reported. Primary or secondary unactivated alkylboronic acids served as alkylatingagents for the direct