-
Trapani, Giuseppe; Reho, Antonia; Latrofa, Andrea, Journal of Chemical Research, Miniprint, 1986, # 3, p. 954 - 976
作者:Trapani, Giuseppe、Reho, Antonia、Latrofa, Andrea、Morlacchi, Flaviano、Liso, Gaetano
DOI:——
日期:——
-
Sauter, Fritz; Stanetty, Peter; Blaschke, Alfred, Journal of Chemical Research, Miniprint, 1981, # 4, p. 1027 - 1042
作者:Sauter, Fritz、Stanetty, Peter、Blaschke, Alfred
DOI:——
日期:——
-
N-alkenyl acylketene S, N-acetals from 2,3-dihydro-1,3-benzothiazoles and carboxylic anhydrides. X-Ray molecular structure of 2-(butyrylmethylene)N-(cyclohex-1-enyl)-2,3-dihydro-1,3-benzothiazole
作者:Giuseppe Trapani、Andrea Latrofa、Antonia Reho、Massimo Franco、Gaetano Liso、Francesca Stasi
DOI:10.1039/p19910001505
日期:——
Depending on the reaction conditions or starting materials used, 2,3-dihydro-1,3-benzothiazoles 1 or their N-acyl derivatives 2 react with carboxylic anhydrides to yield the corresponding enamides 3 and/or N-alkenyl acylketene S,N-acetals 4. The structural assignments of these last compounds are based on spectroscopic data. X-Ray evidence for title compound 4c is also reported. A possible reaction pathway for formation of products 4 is suggested.
-
Babudri, Francesco; Di Nunno, Leonardo; Florio, Saverio, Journal of Heterocyclic Chemistry, 1981, vol. 18, p. 1273 - 1274
作者:Babudri, Francesco、Di Nunno, Leonardo、Florio, Saverio
DOI:——
日期:——
-
A One-Step Synthesis of 2,3-Diydro-1,4-benzothiazines and Phenothiazines from 1,3-Thiazolidine Derivatives of Cyclohexanones
作者:Romualdo Caputo、Carla Ferreri、Luigi Longobardo、Domenico Mastroianni、Giovanni Palumbo、Silvana Pedatella
DOI:10.3987/com-93-6379
日期:——
N-Acetyl-1,3-thiazolidine derivatives of cyclohexanones, when treated with a threefold excess N-bromosuccinimide in anhydrous chloroform at room temperature, smoothly afford N-acetyl-2,3-dihydro-1,4-benzothiazines. This represents the first general route to such heterocyclic system in one step from aliphatic precursors. The synthesis of optically active N-acetyl-2,3-dihydro-1,4-benzothiazines is also reported.