The efficient and gentle ruthenium-catalyzed meta-selective CAr–H nitration of azole ring substituted arenes has been developed.
我们开发了一种高效且温和的钌催化的对取代芳烃的唑环进行间位-选择性的CAr–H硝化的方法。
Regioselective <i>ortho</i>-functionalization of bromofluorenecarbaldehydes using TMPMgCl·LiCl
作者:Dominik Göbel、Nils Clamor、Boris J. Nachtsheim
DOI:10.1039/c8ob01072b
日期:——
A highly regioselective functionalization of 7-bromofluorene-2-carbaldehydes, potent organic chromophores, in position C3 using a mild ortho-metallation strategy (DoM) with TMPMgCl·LiCl has been developed. This approach allows the preparation of highly functionalized fluorene derivatives by conversion of the in situ generated metalated species with various electrophiles giving a fast access to novel
已经开发了使用TMPMgCl·LiCl的温和邻位金属化策略(D o M)在位置C3上对7-溴芴-2-甲醛(有效的有机发色团)进行高度区域选择性的官能化反应。这种方法可以通过将原位生成的金属化物种与各种亲电试剂进行转化来制备高度官能化的芴衍生物,从而可以快速获得新型有机磷光染料。
Manganese-Catalyzed Direct Nucleophilic C(sp<sup>2</sup>)H Addition to Aldehydes and Nitriles
作者:Bingwei Zhou、Yuanyuan Hu、Congyang Wang
DOI:10.1002/anie.201506187
日期:2015.11.9
Herein, a manganese‐catalyzed nucleophilicaddition of inert C(sp2)H bonds to aldehydes and nitriles is disclosed by virtue of a dual activation strategy. The reactions feature mild reaction conditions, excellent regio‐ and stereoselectivity, and a wide substrate scope, which includes both aromatic and olefinic CH bonds, as well as a large variety of aldehydes and nitriles. Moreover, mechanistic studies
Herein, we present a facile synthesis of three azide-functionalized fluorophores and their covalent attachment as triazoles in Huisgen-type cycloadditions with model alkynes. Besides two ortho- and para-bromo-substituted benzaldehydes, the azide functionalization of a fluorene-based structure will be presented. The copper(I)-catalyzed azide–alkyne cycloaddition (CuAAC) of the so-synthesized azide-functionalized
Direct synthesis of 2-oxazolines from carboxylic acids using 2-chloro-4,6-dimethoxy-1,3,5-triazine under mild conditions
作者:B.P Bandgar、S.S Pandit
DOI:10.1016/s0040-4039(03)00251-x
日期:2003.3
2-Acyloxy-4,6-dimethoxy-1,3,5-triazines obtained from carboxylic acids and 2-chloro-4,6-dimethoxy-1,3,5-triazine were subsequently treated with 2-amino-2-methyl-1-propanol to afford the corresponding 2-oxazolines in excellent yield at room temperature.