<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] NOVEL COMPOUNDS AS RESPIRATORY STIMULANTS FOR TREATMENT OF BREATHING CONTROL DISORDERS OR DISEASES<br/>[FR] NOUVEAUX COMPOSÉS COMME STIMULANTS RESPIRATOIRES POUR LE TRAITEMENT DE TROUBLES OU DE MALADIES DE CONTRÔLE DE LA RESPIRATION
申请人:GALLEON PHARMACEUTICALS INC
公开号:WO2012074999A1
公开(公告)日:2012-06-07
The present invention includes compositions that are useful in the treatment of breathing control diseases or disorders in a subject in need thereof. The present invention also includes a method of treating a respiratory disease or disorder in a subject in need thereof, comprising administering to the subject a therapeutically effective amount of a pharmaceutical formulation of the invention, The present invention further includes a method of preventing destabilization or stabilizing breathing rhythm in a subject in need thereof, comprising administering to the subject a therapeutically effective amount of a pharmaceutical formulation of the invention.
[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.
Chloroform as a Carbon Monoxide Precursor: <i>In</i> or <i>Ex Situ</i> Generation of CO for Pd-Catalyzed Aminocarbonylations
作者:Samuel N. Gockel、Kami L. Hull
DOI:10.1021/acs.orglett.5b01385
日期:2015.7.2
Conditions for the rapid hydrolysis of chloroform to carbonmonoxide (CO) using heterogeneous CsOH·H2O are described. CO and 13CO can be generated cleanly and rapidly under mild conditions and can be captured either in or ex situ in palladium-catalyzedaminocarbonylationreactions. Utilizing only 1–3 equiv of CO allows for the aminocarbonylation of aryl, vinyl, and benzyl halides with a wide variety
Asymmetric Deoxygenative Alkynylation of Tertiary Amides Enabled by Iridium/Copper Bimetallic Relay Catalysis
作者:Zhaokun Li、Feng Zhao、Wei Ou、Pei‐Qiang Huang、Xiaoming Wang
DOI:10.1002/anie.202111029
日期:2021.12.13
An Ir/Cu bimetallicrelaycatalysis was developed to achieve the challenging asymmetricdeoxygenativealkynylation of inert amides under mild conditions, affording a series of synthetically important chiral propargylamines in high yields with good to excellent enantioselectivities.