The Mechanism and an Improved Asymmetric Allylboration of Ketones Catalyzed by Chiral Biphenols
作者:David S. Barnett、Philip N. Moquist、Scott E. Schaus
DOI:10.1002/anie.200904715
日期:2009.11.2
Giving it a boost: A mechanistic study of the enantioselective asymmetric titled reaction with allyldiisopropoxyborane catalyzed by chiralbiphenols revealed a key ligand exchange process which liberates isopropyl alcohol. The addition of iPrOH to the reaction increases the overall rate and enantioselectivity. As a result an improved reaction, employing allyldioxaborinane with 1 and tBuOH, resulted
One-Pot Synthesis of Less Accessible <i>N</i>-Boc-Propargylic Amines through BF<sub>3</sub>-Catalyzed Alkynylation and Allylation Using Boronic Esters
作者:Kento Yasumoto、Taichi Kano、Keiji Maruoka
DOI:10.1021/acs.orglett.9b00931
日期:2019.5.3
amines is described via an alkynylation or allylation of alkynyl-substituted N-Boc-imines. Our strategy relies on the BF3-mediated in situgeneration of alkynyl imines followed by alkynylation or allylation with the corresponding boronic esters. A range of lessaccessible N-Boc-propargylic amines were obtained in moderate to good yields under mild and acidic conditions with higher atom economy compared
[EN] CYCLIC BORONIC ACID ESTER DERIVATIVES AND THERAPEUTIC USES THEREOF<br/>[FR] DÉRIVÉS D'ESTERS D'ACIDE BORONIQUE CYCLIQUES ET LEURS UTILISATIONS THÉRAPEUTIQUES
申请人:REMPEX PHARMACEUTICALS INC
公开号:WO2016081297A1
公开(公告)日:2016-05-26
Disclosed herein are antimicrobial compounds, compositions, pharmaceutical compositions, and the use and preparation thereof. Some embodiments relate to cyclic boronic acid ester derivatives and their use as therapeutic agents.
CYCLIC BORONIC ACID ESTER DERIVATIVES AND THERAPEUTIC USES THEREOF
申请人:Hirst Gavin
公开号:US20120040932A1
公开(公告)日:2012-02-16
Disclosed herein are antimicrobial compounds compositions, pharmaceutical compositions, the use and preparation thereof. Some embodiments relate to 1 cyclic boronic acid ester derivatives and their use as therapeutic agents.
Diastereoselective allylation and crotylation of N-unsubstituted imines derived from ketones
作者:Bhartesh Dhudshia、Jorge Tiburcio、Avinash N. Thadani
DOI:10.1039/b511411j
日期:——
A wide variety of tertiary carbinamines are synthesized in high yields via diastereoselective allylation and crotylation of in situ generated N-unsubstituted ketimines.