64820-47-9Relevant articles and documents
Catalyst-free synthesis of 2,3-dihydro-1,5-benzothiazepines in a renewable and biodegradable reaction medium
Yadav, Neetu,Yadav, Vijay B.,Ansari, Mohd Danish,Sagir, Hozeyfa,Verma, Ankit,Siddiqui
supporting information, p. 7011 - 7014 (2019/05/17)
A clean and efficient strategy for the synthesis of benzothiazepines from chalcone and ortho-aminothiophenol has been reported. Here, glycerol, a biodegradable and reusable promoting medium, has been utilized under acid, base or metal-free conditions. The
'On water' synthesis of 2,4-diaryl-2,3-dihydro-1,5-benzothiazepines catalysed by sodium dodecyl sulfate (SDS)
Sharma, Gaurav,Kumar, Raj,Chakraborti, Asit K.
, p. 4269 - 4271 (2008/09/21)
An efficient synthesis of 1,3-diaryl-2,3-dihydro-1,5-benzothiazepines has been developed by the reaction of various 1,3-diaryl-2-propenones with 2-aminothiophenol in water under neutral conditions catalysed by SDS. Excellent chemoselectivity was observed for substrates possessing halogen atoms or nitro/alkoxy/thioalkyl groups which did not undergo competitive aromatic nucleophilic substitution of the halogen atoms or the nitro group, reduction of the nitro or the α,β-unsaturated carbonyl group, or dealkylation of the alkoxy/thioalkoxy groups.
2,4-DIARYL-2,3-DIHYDROBENZOTHIAZEPINES
Orlov, V. D.,Kolos, N. N.,Ruzhitskaya, N. N.
, p. 1293 - 1297 (2007/10/02)
2,4-Diaryl-2,3-dihydrobenzothiazepines are obtained in a single stage from chalcones and ortho-aminothiophenol in the presence of triethylamine.The nature of the electronic transitions in their UV absorption spectra is discussed with the use of quantum-chemical methods.It was shown that the seven-membered ring does not invert in the range of temperatures between -80 and +140 deg C and is in the boat form.The main initial event in the fragmentation of the molecules of the obtained compounds under electron impact is the formation of benzothiazole-containing radicalions.In an acidic medium 2,4-diphenyl-2,3-dihydrobenzothiazepine is hydrolyzed to 3-(2-aminophenylthio)-1,3-diphenyl-1-propanone, and in its reaction with 2,4-dinitrophenylhydrazine chalcone hydrazone and o-aminothiophenol are formed.