A facile and convenient synthesis of functionalized ortho-nitrophenylboronic acids
摘要:
A variety of ortho-nitrophenylboronic acids bearing functional groups such as cyano, nitro, halo, alpha-bromomethyl, and ester were prepared in good yields via I-Mg exchange followed by quenching with trimethyl borate. All reagents employed in this procedure are commercially available and were used without further purification, and the procedure can be executed in about an hour. (c) 2005 Elsevier Ltd. All rights reserved.
Rapid nickel(<scp>ii</scp>)-promoted cysteine <i>S</i>-arylation with arylboronic acids
作者:Kengo Hanaya、Jun Ohata、Mary K. Miller、Alicia E. Mangubat-Medina、Michael J. Swierczynski、David C. Yang、Reece M. Rosenthal、Brian V. Popp、Zachary T. Ball
DOI:10.1039/c9cc00159j
日期:——
proteins, providing novel structure and electronic perturbation. The present work demonstrates an operationally-simple cysteine arylation reaction 2-nitro-substituted arylboronic acids, promoted by a simple nickel(II) salt. The process exhibits strikingly fast reaction rates under physiological conditions in purely aqueous media with excellent selectivity toward cysteine residues. Cysteine arylation of
Nickel(II)-Promoted Amide N–H Arylation of Pyroglutamate–Histidine with Arylboronic Acid Reagents
作者:Kengo Hanaya、Mary K. Miller、Zachary T. Ball
DOI:10.1021/acs.orglett.9b00759
日期:2019.4.5
Small and simple bioorthogonal reactive handles that can be readily encoded by natural processes are important for bioconjugation. A rapid nickel-promoted N–H arylation of pyroglutamate–histidine sequences with 2-nitroarylboronic acids proceeds under mild aqueous conditions. Chemoselective activation of a lactam amide N–H within a peptide or protein provides a new approach to selective conjugation
A facile and convenient synthesis of functionalized ortho-nitrophenylboronic acids
作者:Scott E. Collibee、Jiaxin Yu
DOI:10.1016/j.tetlet.2005.04.129
日期:2005.6
A variety of ortho-nitrophenylboronic acids bearing functional groups such as cyano, nitro, halo, alpha-bromomethyl, and ester were prepared in good yields via I-Mg exchange followed by quenching with trimethyl borate. All reagents employed in this procedure are commercially available and were used without further purification, and the procedure can be executed in about an hour. (c) 2005 Elsevier Ltd. All rights reserved.