Tetracoordinate borates as catalysts for reductive formylation of amines with carbon dioxide
作者:Xiaolin Jiang、Zijun Huang、Mohamed Makha、Chen-Xia Du、Dongmei Zhao、Fang Wang、Yuehui Li
DOI:10.1039/d0gc01741h
日期:——
We report sodium trihydroxyaryl borates as the first robust tetracoordinate organoboron catalysts for reductive functionalization of CO2. These catalysts, easily synthesized from condensing boronic acids with metal hydroxides, activate main group element–hydrogen (E–H) bonds efficiently. In contrast to BX3 type boranes, boronic acids and metal-BAr4 salts, under transition metal-free conditions, sodium
Microwave-assisted conversion of carbonyl compounds into formylated secondary amines: new contribution to the Leuckart reaction mechanism in N-methylformamide
作者:Fructuoso Barba、Javier Recio、Belen Batanero
DOI:10.1016/j.tetlet.2013.01.097
日期:2013.4
The reductive amination of several carbonyl compounds (Leuckartreaction) has been performed using N-methylformamide and microwave technology. Under these conditions, a new mechanism is proposed via the initial formation of an imine, followed by reduction to the amine by ‘in situ’ generated formic acid, and further formylation of the amine. Using this methodology, the formyl derivatives of several
HYDRAZIDE COMPOUND AND THROMBOPOIETIN RECEPTOR ACTIVATOR
申请人:Nissan Chemical Industries, Ltd.
公开号:EP1947101A1
公开(公告)日:2008-07-23
Compounds effective for preventing, treatment or improving diseases against which activation of the thrombopoietin receptor is effective are provided.
A compound represented by the formula (I) (wherein R1, R2, R3, L1, L2, X and Y are defined in the description), a tautomer, prodrug or pharmaceutically acceptable salt of the compound or a solvate thereof.
本发明提供了可有效预防、治疗或改善血栓生成素受体活化疾病的化合物。
由式(I)代表的化合物(其中 R1、R2、R3、L1、L2、X 和 Y 在描述中定义)、该化合物的同系物、原药或药学上可接受的盐或其溶液。
Eco-friendly acetylcholine-carboxylate bio-ionic liquids for controllable <i>N</i>-methylation and <i>N</i>-formylation using ambient CO<sub>2</sub> at low temperatures
作者:Wenfeng Zhao、Xiaoping Chi、Hu Li、Jian He、Jingxuan Long、Yufei Xu、Song Yang
DOI:10.1039/c8gc03549k
日期:——
reaction temperature under solvent or solvent-freeconditions. N-Methylamines (ca. 96% yield) were obtained in acetonitrile at 50 °C, while N-formamides (ca. 99% yield) were attained without a solvent at 30 °C. The established bio-ionic liquid catalytic system found a wide range of applicability in substrates and possessed a high potentiality in scale-up to gram-grade production. The developed catalytic