<i>Ex Situ</i> Generation of Stoichiometric and Substoichiometric <sup>12</sup>CO and <sup>13</sup>CO and Its Efficient Incorporation in Palladium Catalyzed Aminocarbonylations
作者:Philippe Hermange、Anders T. Lindhardt、Rolf H. Taaning、Klaus Bjerglund、Daniel Lupp、Troels Skrydstrup
DOI:10.1021/ja200818w
日期:2011.4.20
CO-precursor led to the development of a new solid, stable, and easy to handle source of CO for chemical transformations. The synthesis of this CO-precursor also provided an entry point for the late installment of an isotopically carbon-labeled acid chloride for the subsequent release of gaseous [(13)C]CO. In combination with studies aimed toward application of CO as the limiting reagent, this method provided
使用简单的密封两室系统实现了异位生成一氧化碳 (CO) 及其在钯催化的羰基化反应中的有效结合的新技术。CO 的异位生成是通过钯催化的叔酰氯脱羰使用源自 Pd(dba)(2) 和 P(tBu)(3) 的催化剂产生的。使用新戊酰氯作为 CO 前体的初步研究为仅使用 1.5 当量的 CO 对 2-吡啶基甲苯磺酸酯衍生物进行氨基羰基化提供了另一种方法。 酰氯 CO 前体的进一步设计导致开发了一种新的固体、稳定、并且易于处理用于化学转化的 CO 源。这种 CO 前体的合成也为后期安装同位素碳标记的酰氯以随后释放气态 [(13)C]CO 提供了切入点。结合旨在应用 CO 作为限制剂的研究,该方法提供了高效的钯催化氨基羰基化,CO 结合率高达 96%。异位生成的 CO 和双室系统在几种药物化合物的合成中进行了测试,所有这些化合物都被标记为 [(13)C] 羰基对应物,基于限制 CO 的产率从良好到极好。
[EN] SYSTEM PROVIDING CONTROLLED DELIVERY OF GASEOUS CO FOR CARBONYLATION REACTIONS<br/>[FR] SYSTÈME PERMETTANT LA LIBÉRATION CONTRÔLÉE DE CO GAZEUX POUR RÉACTIONS DE CARBONYLATION
申请人:UNIV AARHUS
公开号:WO2012079583A1
公开(公告)日:2012-06-21
A carbonylation system comprising at least one carbon monoxide producing chamber and at least one carbon monoxide consuming chamber forming an interconnected multi-chamber system, said interconnection allowing carbon monoxide to pass from the at least one carbon monoxide producing chamber to the at least one carbon monoxide consuming chamber, said at least one carbon monoxide producing chamber containing a reaction mixture comprising a carbon monoxide precursor and a catalyst, said at least one carbon monoxide consuming chamber being suitable for carbonylation reactions, said interconnected multi- chamber system being sealable from the surrounding atmosphere during carbonylation.
Molecules having pesticidal utility, and intermediates, compositions, and processes, related thereto
申请人:Dow AgroSciences LLC
公开号:US20160304522A1
公开(公告)日:2016-10-20
This disclosure relates to the field of molecules having pesticidal utility against pests in Phyla Arthropoda, Mollusca, and Nematoda, processes to produce such molecules, intermediates used in such processes, pesticidal compositions containing such molecules, and processes of using such pesticidal compositions against such pests. These pesticidal compositions may be used, for example, as acaricides, insecticides, miticides, molluscicides, and nematicides. This document discloses molecules having the following formula (“Formula One”).
US9781935B2
申请人:——
公开号:US9781935B2
公开(公告)日:2017-10-10
A convenient synthesis of <i>N</i>-(hetero)arylamides by the oxidative coupling of methylheteroarenes with amines
作者:Anjali Jaiswal、Preeti、Krishna Nand Singh
DOI:10.1039/d2ob01106a
日期:——
An oxidative amidation of 2-methylpyridines/2-methylbenzimidazole with amines using copper acetate and elemental sulfur in DMSO to afford various N-(hetero)arylamides has been accomplished. Mechanistic studies reveal the intermediacy of N-(pyridin-2-ylmethyl)aniline and confirm the role of DMSO as the oxygen source.