Direct vinylation of natural alcohols and derivatives with calcium carbide
作者:Siew Ping Teong、Ariel Yi Hui Chua、Shiyun Deng、Xiukai Li、Yugen Zhang
DOI:10.1039/c6gc03579e
日期:——
A transition metal-free, mild, and safe protocol has been developed for direct vinylation of various sugar alcohols, phenol and its derivatives with calciumcarbide.
已经开发了一种无过渡金属,温和且安全的规程,用于将各种糖醇,苯酚及其衍生物与电石直接乙烯基化。
An Atom-Economic Approach for Vinylation of Indoles and Phenols Using Calcium Carbide as Acetylene Surrogate
An efficient N-vinylation of indoles and O-vinylation of phenols to give N-vinyl indoles and phenyl vinyl ethers is reported. The vinylated products can be produced in satisfactory to excellent yields (65–92 %) upon treatment of indoles or phenols with calcium carbide in wet solvents in a standard laboratory setup. Key features of this reaction include the use of calcium carbide as a safe and inexpensive
A simple one-pot preparation of 3,3a-dihydro-5H-pyrano[3,3a-c]isoxazol-5-ylideneethanal from 4-vinyloxyphenyl azide: an example of aromatic azide photooxidation for the synthesis of nitrogen-containing heterocyclic compounds
Photolysis of 4-vinyloxyphenyl azide in the presence of oxygen in acetonitrile leads to the formation of a fused heterocyclic compound due to the ability of the intermediates of this reaction to undergo a unique domino reaction sequence. The rate constants and activation parameters of some elementary stages of the process are measured by flash photolysis.
PHOTO-CROSSLINKABLE MATERIAL FOR ORGANIC THIN FILM TRANSISTOR INSULATING LAYER
申请人:Sumitomo Chemical Co., Ltd
公开号:EP2479791A1
公开(公告)日:2012-07-25
A problem of the present invention is to provide an organic thin film transistor insulating layer material which is capable of forming a cross-linked structure without conducting a treatment at higher temperature, and which enables an organic thin film transistor to have a small absolute value of threshold voltage (Vth) when it is used for the formation of a gate insulating layer. The means for solving the problem is an organic thin film transistor insulating layer material including a macromolecular compound that has a repeating unit having a group containing a fluorine atom and a repeating unit having a photodimerization-reactive group. Preferred examples of the group containing a fluorine atom include an aryl group in which a hydrogen atom has been substituted with a fluorine atom and an alkylaryl group in which a hydrogen atom has been substituted with a fluorine atom, and particularly a phenyl group in which a hydrogen atom has been substituted with a fluorine atom and an alkylphenyl group in which a hydrogen atom has been substituted with a fluorine atom. Preferred examples of the photodimerization-reactive group include an aryl groups in which a hydrogen atom has been substituted with a halomethyl group, and particularly a phenyl group in which a hydrogen atom has been substituted with a halomethyl group.
REINFORCING FIBERS AND PRODUCTION METHOD THEREFOR, AND MOLDED ARTICLE USING SAME
申请人:Kuraray Co., Ltd.
公开号:EP3805451A1
公开(公告)日:2021-04-14
Reinforcing fibers containing hydrophilic fibers and an adhesive component, wherein at least a part of the surfaces of the hydrophilic fibers have the adhesive component, the adhesive component contains a modified conjugated diene rubber having a hydrogen-bonding functional group in a part of the conjugated diene rubber, and the number of the hydrogen-bonding functional groups in the modified conjugated diene rubber is 2 to 150 per molecule on average; a method for producing the reinforcing fibers; and a molded article using the reinforcing fibers.