A convenient procedure for the direct conversion of terminal alkenes into carboxylic acids
摘要:
Alkylboronic acids, readily synthesized from a variety of representative terminal alkenes via hydroboration with dibromoborane-methyl sulfide, undergo a facile oxidation with chromium trioxide in 90% aqueous acetic acid to provide carboxylic acids in 80-97% isolated yields, without rearrangement or loss of carbon.
[EN] DIHYDROQUINOLIZINONES AS ANTIVIRALS<br/>[FR] DIHYDROQUINOLIZINONES À UTILISER EN TANT QU'ANTIVIRAUX
申请人:GLAXOSMITHKLINE IP DEV LTD
公开号:WO2018154466A1
公开(公告)日:2018-08-30
Compounds, specifically hepatitis B virus and/or hepatitis D virus inhibitors, more specifically compounds that inhibit HBe antigen and HBs antigen in a subject, for the treatment of viral infections, and methods of preparing and using such compounds. Formula (I):
A Metal and Base-Free Chemoselective Primary Amination of Boronic Acids Using Cyanamidyl/Arylcyanamidyl Radical as Aminating Species: Synthesis and Mechanistic Studies by Density Functional Theory
作者:Nachiketa Chatterjee、Minhajul Arfeen、Prasad V. Bharatam、Avijit Goswami
DOI:10.1021/acs.joc.6b00671
日期:2016.6.17
base-free, chemoselective synthesis of aryl-, heteroaryl-, and alkyl primary amines from the corresponding boronic acids has been achieved at ambient temperature mediated by [bis(trifluoroacetoxy)iodo]benzene (PIFA) and N-bromosuccinimide (NBS) using cyanamidyl/arylcyanamidyl radicals as the aminating species. The primary amine compounds were initially obtained as their corresponding ammonium trifluoroacetate
Visible-light-induced deboronative alkylarylation of acrylamides with organoboronic acids
作者:Xuezhi Li、Man-Yi Han、Bin Wang、Lei Wang、Min Wang
DOI:10.1039/c9ob01023h
日期:——
A visible-light-induced deboronative alkylarylation of acrylamides with boronic acids was developed via a tandem reaction process.
通过串联反应过程,开发了一种可见光诱导的丙烯酰胺与硼酸脱硼芳香化反应。
Visible-light-mediated photoredox minisci C–H alkylation with alkyl boronic acids using molecular oxygen as an oxidant
作者:Jianyang Dong、Fuyang Yue、Hongjian Song、Yuxiu Liu、Qingmin Wang
DOI:10.1039/d0cc05946c
日期:——
report a protocol for direct visible-light-mediated Minisci C–H alkylation reactions of heteroarenes with alkyl boronic acids using molecular oxygen as the sole oxidant. This mild protocol uses an inexpensive, green oxidant; permits efficient functionalization of various N-heteroarenes with a broad range of primary and secondaryalkyl boronic acids; and is scalable to the gram level. We demonstrated the
General Access to <i>C</i>-Centered Radicals: Combining a Bioinspired Photocatalyst with Boronic Acids in Aqueous Media
作者:Maheshwerreddy Chilamari、Jacob R. Immel、Steven Bloom
DOI:10.1021/acscatal.0c03422
日期:2020.11.6
indispensable building blocks for modern synthetic chemistry. In recent years, visible light photoredox catalysis has become a promising avenue to access C-centered radicals from a broad array of latent functional groups, including boronic acids. Herein, we present an aqueous protocol wherein water features a starring role to help transform aliphatic, aromatic, and heteroaromatic boronic acids to C-centered