Inclusion compound of β-cyclodextrin with binuclear guests containing residues of some pharmocologically important aromatic monocarboxylic acids
摘要:
Stable monomeric and dimeric inclusion compounds of beta-cyclodextrin with binuclear guests containing the residues of some pharmacologically important aromatic monocarboxylic acids were obtained.
The selective esterification of carboxylic acid derivatives with a variety of alkyl halides was carried out using ionic liquid as solvent in the presence of triethylamine. The reaction was found to proceed under relatively mild conditions with excellent conversions (up to 99%) and selectivities. The ionic liquid was recycled and reused.
Solvent-free synthesis of symmetric methylene diesters <i>via</i> direct reaction of aromatic carboxylates with 1,<i>n</i>-dihaloalkanes
作者:Lin Bai、Shenglong Ding、Xiaofang Ma
DOI:10.1039/d1ra04814g
日期:——
An efficient methodology for the synthesis of symmetrical methylene diesters was developed through direct reaction of various aromatic carboxylates with 1,n-dihaloalkanes under solvent-free conditions. This strategy offers a high product yield, facile work-up and purification, and an environmentally friendly approach to obtain long-chain methylene carboxylate scaffolds with increased diversity.
Hydrogen-bond-assisted transition-metal-free catalytic transformation of amides to esters
作者:Changyu Huang、Jinpeng Li、Jiaquan Wang、Qingshu Zheng、Zhenhua Li、Tao Tu
DOI:10.1007/s11426-020-9883-3
日期:2021.1
interest in synthetic chemistry, biological process and pharmaceutical industry. Transition-metal, luxury ligand or excess base were always vital to the transformation. Here, we developed a transition-metal-free hydrogen-bond-assisted esterification of amides with only catalytic amount of base. The proposed crucial role of hydrogen bonding for assisting esterification was supported by control experiments
Molybdenum Hexacarbonyl Mediated Alkoxycarbonylation of Aryl Halides
作者:Motoki Yamane、Wei Ren、A. Emi
DOI:10.1055/s-0030-1260060
日期:2011.7
Mo(CO)6-mediates the alkoxycarbonylation of arylhalides in their reaction with alcohols to afford arenecarboxylic acid esters. The molybdenum carbonyl complexes act as the catalyst and the source with carbon monoxide. The alkoxycarbonylation proceeds with a small excess of carbon monoxide in the form of Mo(CO)6 and the procedure is simple compared to the conventional method, which uses palladium catalyst
RECORDING MATERIAL PRODUCED USING NON-PHENOL COMPOUND
申请人:NIPPON SODA CO., LTD.
公开号:US20150284321A1
公开(公告)日:2015-10-08
An object of the present invention is to provide a recording material or a recording sheet using, as a color-developing agent, a non-phenol compound that is a safe compound in no danger of corresponding to an endocrine disruptor and is good in color developing performance. The non-phenol compound used in the present invention is at least one selected from the group consisting of compounds represented by the following formulas (I) to (III).