90564-94-6Relevant academic research and scientific papers
Boulton-Katritzky Rearrangement of 5-(Cyanoimino)-1,2,4-thiadiazolines
Sonnenschein, Helmut,Schmitz, Ernst,Gruendemann, Egon,Schroeder, Edith
, p. 1177 - 1180 (2007/10/02)
The products of the addition of nucleophiles (alcohols, amines) to the cyano group of 5-(cyanoimino)thiadiazolines 1 undergo a Boulton-Katritzky rearrangement.The thiadiazoles 4 are formed by subsequent nitrile elimination.In the case of bicyclic thiadiazoloazepine 5 an equilibrium mixture of unrearranged iminothiadiazoline 6 and rearranged thiadiazole 7 is obtained as an intermediate. - Key Words: 1,2,4-Thiadiazoles / Bond switch / Nucleophiles, selective reaction
Oxidative heterocyclization using diethyl azodicarboxylate
Kihara,Kabashima,Uno,Okawara,Yamasaki,Furukawa
, p. 1020 - 1023 (2007/10/02)
The reactions of amidinothioureas, imidoylthioureas, thioacylamidines, O-methyl-1-aryl-2-thioisobiurets, and 1-aryl-isodithiobiurets with diethyl azodicarboxylate (DEAD, diethyl diazenedicarboxylate) gave the corresponding thiadiazoles by the oxidative cy
