1005-63-6Relevant academic research and scientific papers
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
Chainikova, Ekaterina,Teregulova, Aigul,Lobov, Alexander,Erastov, Alexey,Safiullin, Rustam
, p. 1332 - 1334 (2015)
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.
Chemoselective vinylation of aminophenols with acetylene catalyzed by sodium aminophenolates in aqueous DMSO
Gusarova, Nina K.,Kolyvanov, Nikita A.,Oparina, Ludmila A.,Trofimov, Boris A.
, p. 788 - 790 (2021/01/11)
An efficient atom-economic chemoselective synthesis of vinyloxyanilines from aminophenols and acetylene catalyzed by sodium aminophenolates in aqueous DMSO (90 °C, 3 h) has been developed.
Direct vinylation of natural alcohols and derivatives with calcium carbide
Teong, Siew Ping,Chua, Ariel Yi Hui,Deng, Shiyun,Li, Xiukai,Zhang, Yugen
supporting information, p. 1659 - 1662 (2017/06/07)
Vinyl ethers are essential synthetic building blocks for organic synthesis, especially for polymer synthesis and highly vinylated polyol substrates. Herein, a transition metal-free, mild, and safe protocol has been developed for direct vinylation of natural alcohols with calcium carbide. Various sugar alcohols, phenol and its derivatives were tested and proved successful using this green methodology. Selectivity of full vinylated products of the reaction decreases with increasing hydroxyl groups because of side reactions occurring under the basic medium. Electron-donating substituted phenols work more efficiently than electron-withdrawing substituted phenols in general. This methodology may provide new insights on selective vinylation of electron-rich biomass-derived materials.
An Atom-Economic Approach for Vinylation of Indoles and Phenols Using Calcium Carbide as Acetylene Surrogate
Rattanangkool, Eakkaphon,Vilaivan, Tirayut,Sukwattanasinitt, Mongkol,Wacharasindhu, Sumrit
, p. 4347 - 4353 (2016/09/14)
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 slow released acetylene source for N- and O-vinylation under simple reaction conditions without the need for metal catalyst or halogenated substrates.
Process for the preparation of unsaturated amino compounds
-
, (2008/06/13)
The present invention relates to a process for the preparation of aromatic amino compounds which are substituted by a least one group comprising at least one unsaturated carbon-carbon bond, by catalytic hydrogenation of corresponding aromatic nitro compounds in the presence of a modified noble metal catalyst, wherein the noble metal catalyst used is platinum modified with a metal selected from the group consisting of lead, mercury, bismuth, germanium, cadmium, arsenic, antimony, silver and gold, and to novel noble metal catalysts for use in this process.
