19722-99-7Relevant academic research and scientific papers
Zeolite-promoted Synthesis of Coumarins and Thiocoumarins
Zaitceva, Olesia,Bénéteau, Valérie,Ryabukhin, Dmitry S.,Louis, Benoit,Vasilyev, Aleksander V.,Pale, Patrick
, p. 326 - 333 (2019/11/13)
Acidic zeolites, especially faujasites, efficiently promote the intramolecular cyclization of aryl propynoates and propynethioates, which produces coumarins and thiocoumarins, usually in high yields. Comparison with homogeneous Lewis or Br?nsted acids and
Reactions of N-phenylamide and phenyl (thio)esters of 3-phenylpropiolic acid with benzene under superelectrophilic activation
Ryabukhin,Vasilyev,Vyazmin, S. Yu.
, p. 843 - 846 (2013/03/29)
N-Phenylamide and phenyl (thio)esters of 3-phenylpropiolic acid add benzene in the presence of CF3SO3H or AlX3 (X = Cl, Br) to give 4,4-diphenyl-3,4-dihydroquinolin-2-one, 4,4-diphenyl-3,4- dihydrocoumarin, and 4,4-dipheny
