56530-04-2Relevant academic research and scientific papers
Metal-free catalytic cascade to chromones: Direct coupling of salicylaldehydes and activated alkynes triggered by aryloxyl radicals
Wang, Ping,Li, Zhongfeng,Cao, Shengli,Rao, Honghua
, p. 106350 - 106354 (2015)
The first intermolecular addition reaction of aryloxyl radicals to CC bonds was disclosed, which can afford biologically important chromone scaffolds via a PhNMe3I-catalyzed direct coupling of readily available salicylaldehydes and activated internal alkynes in only one step, and can tolerate a range of catalytically reactive functional groups.
A green and rapid approach for the stereoselective vinylation of phenol, thiol and amine derivatives in water
Sarrafi, Yaghoub,Sadatshahabi, Marzieh,Alimohammadi, Kamal,Tajbakhsh, Mahmood
supporting information; experimental part, p. 2851 - 2858 (2011/11/06)
The stereoselective formation of C-O, C-S and C-N bonds by the reaction of phenols, thiols and amines with activated alkynes is described. The reactions are successfully conducted in water with excellent yields at room temperature. The lack of organic sol
Tributylphosphine-catalyzed stereoselective O-vinylation of 2-hydroxybenzaldehyde derivatives
Ramazani, Ali,Azizkhani, Vahid,Gouranlou, Farideh
experimental part, p. 719 - 724 (2010/07/08)
Protonation of the highly reactive 1:1 intermediates, produced in the reaction between tributylphosphine and alkyl acetylenecarboxylates by 2-hydroxybenzaldehyde derivatives, leads to vinyltributylphosphonium salts, which undergo a Michael addition reaction with conjugate base to produce corresponding phosphorus ylides. The phosphorus ylides convert to electron-poor O-vinyl ether derivatives under reaction conditions.
An efficient and green approach for the synthesis of vinyl aryl ethers in the presence of guanidine hydrochloride
Baharfar, Robabeh,Vahdat, Seyed Mohammad
experimental part, p. 869 - 874 (2011/08/08)
A stereoselective procedure for vinyl aryl ether bond formation by direct coupling of dialkyl acetylenedicarboxylates and substituted phenols or naphthols under mild reaction conditions has been developed. Using guanidine hydrochloride as a new catalyst a
Trimethylamine catalyzed stereoselective reaction between dimethyl acetylenedicarboxylate and phenols
Nasiri, Farough,Atashkar, Bahareh
experimental part, p. 1223 - 1227 (2009/12/03)
Stereoselective reaction of various substituted phenols with dimethyl acetylenedicarboxylate in the presence of a catalytic amount of aqueous trimethylamine solution in dichloromethane leads to dimethyl 2-phenoxymaleates in good to excellent yields under mild condition.
