107326-19-2Relevant articles and documents
Sequential ring expansion and ketene elimination reactions in the novel rhodium(I)-catalyzed carbonylation of thiazolidines
Khumtaveeporn, Kanjai,Alper, Howard
, p. 5662 - 5666 (2007/10/02)
1,3-Thiazolidines react with carbon monoxide, in the presence of catalytic quantities of chloro(1,5-cyclooctadiene)rhodium(I) dimer and potassium iodide, to give thiazolidinones in 56-88% yields. Reaction in the absence of KI afforded the six-membered ring thiazin-3-one. The rhodium(I) complex can catalyze the quantitative conversion of the thiazin-3-one to the thiazolidinone under carbon monoxide, with ketene as the reaction by-product. The conversion of thiazolidines to thiazolidinones involves a novel regiospecific insertion of carbon monoxide into one of two ring carbon-nitrogen bonds, as well as a metal-catalyzed ketene elimination process.
Cyclization of α- and β-alkylthio-substituted amines possessing positively charged carbon at the nitrogen. A new synthetic method for thiazolidines, thiomorpholines and dihydro-1,4-benzothiazines
Ishikawa,Terao,Suzuki,et al.
, p. 438 - 446 (2007/10/02)
-