111412-46-5Relevant articles and documents
Synthesis of mesoionic 4-(para-substituted phenyl-5-2,4-dichlorophenyl)-1, 3-4-thiadiazolium-2-aminides by direct cyclization via acylation of thiosemicarbazides
Britto, Marcelo Moreira,Almeida, Tania Mara Grigolli,Leitao, Andrei,Donnici, Claudio Luis,Lopes, Miriam Tereza Paz,Montanari, Carlos Alberto
, p. 3359 - 3369 (2007/10/03)
The synthesis of ten novel mesoionic 4-[para-substituted (H, CH 3, OCH3, NO2, Cl, Br, OH, t-C4H 9, C6H5, C4H9) phenyl-5-2,4-dichlorophenyl]-1,3-4-thiadiazolium-2-aminides, as hydrochlorides, are described. The synthesis strategy utilized the corresponding para-substituted isothiocyanates as starting materials to obtain the thiosemicarbazides through reaction with phenylhydrazine (61-98%), which were then submitted to acylation with 2,4-dichloro benzoyl chloride and direct cyclization to generate the desired substituted mesoionic compounds in good yields (ca. 80%). Copyright Taylor & Francis Group, LLC.
