20876-80-6Relevant academic research and scientific papers
Construction of Thienothiophene and Thienofuran Ring Systems via Ring Expansion of Difluorothiiranes Generated from Dithioesters
Fuchibe, Kohei,Mukohara, Ibuki,Yamada, Atsushi,Miyazaki, Daisuke,Takayama, Ryo,Ichikawa, Junji
supporting information, p. 169 - 174 (2021/12/27)
The reaction of aryl thiophene-2-carbodithioates or thiophene-3-carbodithioates with difluorocarbene generated from BrCF2CO2Li/molecular sieves 4A produced arylsulfanylated 2,2-difluoro-3-thienylthiiranes. In the presence of lithium ion, the thiirane intermediates underwent ring expansion followed by HF elimination, leading to fluorinated thieno[3,2-b]thiophenes or thieno[2,3-b]thiophenes. The reactions of the oxygen analogues, aryl furancarbodithioates, also proceeded to afford the corresponding thieno[3,2-b]furans. Intramolecular fluorine substitution in the produced arylsulfanyl(fluoro)thienofurans allowed for another thiophene ring construction, leading to the synthesis of fused pentacyclic thienothienofurans.
Aminolysis of aryl dithio-2-thiophenates and dithio-2-furoates in acetonitrile
Oh, Hyuck Keun,Woo, So Young,Shin, Chul Ho,Lee, Ikchoon
, p. 849 - 857 (2007/10/03)
The aminolyses of the title substrates with anilines and benzylamines are investigated in acetonitrile. A clean second-order kinetics is obtained with a first-order rate law in the amine concentration, which is uncomplicated by the fast proton transfer st
BENZYNE-INDUCED FRAGMENTATION REACTIONS OF 1,3-DITHIOLANES
Nakayama, Juzo,Ozasa, Hiroshi,Hoshino, Masamatsu
, p. 1053 - 1056 (2007/10/02)
2-Monosubstituted 1,3-dithiolanes, on reaction with benzyne, undergo two types of fragmentation, one of which gives phenyl vinyl sulfide and thioaldehydes (corresponding aldehydes as the final products) and the other gives phenyl dithiocarboxylates and et
