Direct Benzylic Alkylation via Ni-Catalyzed Selective Benzylic sp3 C−O Activation
摘要:
This article demonstrates the first cross coupling of benzyl ether with Grignard reagents via Ni-catalyzed benzylic sp(3) C-O activation with high efficiency and excellent chemoselectivity. Benzylic sp(3) C-O and aryl sp(2) C-O were differentiated, controlled by ligands.
POLYMERISABLE COMPOUNDS AND THE USE THEREOF IN LIQUID-CRYSTAL DISPLAYS
申请人:Merck Patent GmbH
公开号:EP3124465A1
公开(公告)日:2017-02-01
The present invention relates to polymerisable compounds, to processes and intermediates for the preparation thereof, to liquid-crystal (LC) media comprising them, and to the use of the polymerisable compounds and LC media for optical, electro-optical and electronic purposes, in particular in LC displays, especially in LC displays of the polymer sustained alignment type.
Direct Benzylic Alkylation via Ni-Catalyzed Selective Benzylic sp<sup>3</sup> C−O Activation
作者:Bing-Tao Guan、Shi-Kai Xiang、Bi-Qin Wang、Zuo-Peng Sun、Yang Wang、Ke-Qing Zhao、Zhang-Jie Shi
DOI:10.1021/ja710944j
日期:2008.3.1
This article demonstrates the first cross coupling of benzyl ether with Grignard reagents via Ni-catalyzed benzylic sp(3) C-O activation with high efficiency and excellent chemoselectivity. Benzylic sp(3) C-O and aryl sp(2) C-O were differentiated, controlled by ligands.
Evaluation of a Nonresonant Microwave Applicator for Continuous-Flow Chemistry Applications
successfully carried out using a 200 mm × ⌽ 3 mm tubular borosilicate reactor and a flow between 47 and 2120 μL/min. The microwave heating pattern was visualized with an IR camera. The transformations include palladium-catalyzed coupling reactions (oxidative Heck and Suzuki reactions), heterocyclic chemistry (oxathiazolone and Fischerindolesynthesis), rearrangement (Claisen), and a Diels–Alder cycloaddition