还原性烯烃交叉偶联代表了从现成的烯烃原料构建 C-C 键的直接策略。已经开发出一种利用草酸作为无痕关键的一锅法来实现缺电子烯烃的直接交叉偶联。整个过程是一个两步转化,涉及加氢羧化,然后是脱羧交叉偶联。双光催化剂系统对于成功至关重要,并协同促进两个反应步骤。该反应支持生物活性分子的有效合成。光氧化还原催化为 CO 2的生成提供了一种简单而温和的途径从草酸中分离出自由基阴离子,这为这种活性中间体在精细化学品合成中的广泛应用铺平了道路。
Bis(3,5-dimethylpyrazol-1-yl)alkanones and their reactivity with [PdCl2(NCMe)2]: Isolation of bis(3,5-dimethylpyrazol-1-yl)propan-1-one palladium(II) chloride and C–H activation of propanone linker
作者:Nangamso Miti、Ilia A. Guzei、Simphiwe M. Nelana、James Darkwa
DOI:10.1016/j.inoche.2009.10.036
日期:2010.1
Four new bis(3,5-dimethylpyrazol-1-yl)alkanones were prepared by the reaction of the respective alkanoyl chloride with 3,5-dimethylpyrazole: L1 from chloropropionyl chloride, L2 from 4-chlorobutyryl chloride, L3 from oxalyl chloride and L4 from adipoyl dichloride: all in moderate yields. Of the four compounds only L1 successfully reacts with [PdCl2(NCMe)(2)] to yield [PdCl2(L1)] in 41% yield, which on heating in toluene leads to C-H activation to produce [PdCl(L1')], where L1' is deprotonated L1, in very low yield. (C) 2009 Elsevier B.V. All rights reserved.
SYNTHESIS OF HEXAMETHYLENEDIAMINE AND ADIPIC ACID VIA HOMOCOUPLING OF ACRYLAMIDES
申请人:[en]NATIONAL UNIVERSITY OF SINGAPORE
公开号:WO2024039293A1
公开(公告)日:2024-02-22
The present disclosure relates to a method of synthesising hexamethylenediamine and adipic acid. The method comprises homocoupling of acrylamide under conditions including using oxalic acid as a reductant and irradiating a reaction mixture comprising acrylamide with light from a light source to obtain an amide substrate, wherein the method further comprises a pathway 1 and a pathway 2 for forming hexamethylenediamine and adipic acid, respectively using the amide substrate.
Ried,W. et al., Justus Liebigs Annalen der Chemie, 1961, vol. 642, p. 121 - 127
作者:Ried,W. et al.
DOI:——
日期:——
Photocatalytic coupling of electron-deficient alkenes using oxalic acid as a traceless linchpin
作者:Zugen Wu、Mingyue Wu、Kun Zhu、Jie Wu、Yixin Lu
DOI:10.1016/j.chempr.2022.12.013
日期:2023.1
Reductive alkene cross-coupling represents a straightforward strategy for the construction of C–C bonds from readily available alkene feedstocks. A one-pot protocol, utilizing oxalic acid as a traceless linchpin, has been developed to achieve direct cross-coupling of electron-deficient alkenes. The overall process is a two-step transformation involving hydrocarboxylation followed by decarboxylative
还原性烯烃交叉偶联代表了从现成的烯烃原料构建 C-C 键的直接策略。已经开发出一种利用草酸作为无痕关键的一锅法来实现缺电子烯烃的直接交叉偶联。整个过程是一个两步转化,涉及加氢羧化,然后是脱羧交叉偶联。双光催化剂系统对于成功至关重要,并协同促进两个反应步骤。该反应支持生物活性分子的有效合成。光氧化还原催化为 CO 2的生成提供了一种简单而温和的途径从草酸中分离出自由基阴离子,这为这种活性中间体在精细化学品合成中的广泛应用铺平了道路。