138713-36-7Relevant academic research and scientific papers
Polar Cycloaddition of 2-Benzothiopyrilium Salts with Conjugated Dienes
Shimizu, Hiroshi,Miyazaki, Shojiro,Kataoka, Tadashi,Hori, Mikio,Muraoka, Osamu
, p. 3129 - 3140 (2007/10/02)
2-Benzothiopyrilium salts 4 and 6 underwent polar cycloaddition with conjugated dienes to afford benzo-fused bicyclic sulfonium salts 7 and 8, respectively, having sulfur at a bridgehead position, in good yields.The salt 4 bearing an electron-withdrawing
A polar cycloaddition of 2-thianaphthylium ions with 1,3-dienes and some properties of the cycloadducts
Shimizu, Hiroshi,Miyazaki, Shojiro,Kataoka, Tadashi,Hori, Mikio
, p. 5571 - 5574 (2007/10/02)
2-Thianaphthylium ions (1) underwent a polar cycloaddition with 1,3-dienes to afford benzo-fused bicyclic sulfonium salts (2) bearing sulfur atom at bridge-head in excellent yields. The cycloadducts underwent retro-addition reaction to generate the cation
