102862-07-7Relevant academic research and scientific papers
Thioketene Syntheses, VIII. - Thioketenes by Cycloreversion of 1,3-Dithiolane Derivatives
Schaumann, Ernst,Scheiblich, Stefan,Wriede, Ulrich,Adiwidjaja, Gunadi
, p. 1165 - 1176 (2007/10/02)
2-Alkylidene-1,3-dithiolanes are transformed into S,S-dioxides 1 and S-ethyl- 2 or S-arylsulfonium salts 3.After deprotonation at C-5 they form in a cycloreversion thioketenes 5, which can be trapped as thioamides 17, 18.The stabilized thioketenes 5e,i-k afford 1:1 cycloadducts 24a, b, 27a-d with azomethines; in addition, thioketene 5j provides a dimer 28j, which was characterized by an X-ray structural investigation.
GENERATION OF THIOKETENES VIA CYCLOREVERSION OF 1,3-DITHIOLANE-DERIVED SULFUR YLIDES
Schaumann, Ernst,Scheiblich, Stefan
, p. 5269 - 5272 (2007/10/02)
On treatment with base, 1-aryl-2-alkylidene-1,3-dithiolanium salts 6 give clean cycloreversion providing thioketenes 3 and vinyl sulfides 7.
