248-02-2Relevant articles and documents
Triazolbenzo[d]thiazoles: Efficient synthesis and biological evaluation as neuroprotective agents
Avila, Belem,Roth, Aaron,Streets, Heather,Kurth, Mark J.,Dwyer, Donard S.
supporting information, p. 5976 - 5978,3 (2020/08/31)
A number of (1H-1,2,3-triazol-1-yl)benzo[d]thiazoles were synthesized utilizing a versatile Cu-catalyzed azide-alkyne click reaction (CuAAC) on tautomeric benzo[4,5]thiazolo[3,2-d]tetrazole (1) and 2-azidobenzo[d]thiazole (2) starting materials. Moreover, one of the resulting products of this investigation, triazolbenzo[d]thiazole 22, was found to possess significant neuroprotective activity in human neuroblastoma (SH-SY5Y) cells.
On the utility of the azido transfer protocol: Synthesis of 2- And 5-azido N-methylimidazoles, 1,3-thiazoles and N-methylpyrazole and their conversion to triazole - azole bisheteroaryls
Zanirato, Paolo,Cerini, Stefano
, p. 1508 - 1513 (2007/10/03)
The azido transfer procedure of heteroaryllithium and tosyl azide was used to synthesize selected 2- and 5-azidoazoles. This procedure, which is based on the fragmentation of the appropriate lithium triazene salts 1a-7a, successfully afforded 2-azido-N-methylimidazole 1, 2-azido-l,3-thiazole 2, 2-azidobenzo-1.3-thiazole 3, 5-azido-N-methylpyrazole 4, 5-azido-N- methylimidazole 6 [via 2-(trimethylsilyl)-5-azido-N-methylimidazole 5], and 5-azido-l,3-thiazole 7 (via 5-lithio-1,3-thiazole), but attempts to prepare 5-azido-2-(trimethylsilyl)-1,3-thiazole 8 from the corresponding triazene 7a failed, affording only the desilylated azide 7 in poor yield. Azidcs 1-7 underwent 1,3-dipolar cycloaddition when mixed with neat (trimethylsilyl) acetylene, giving 1-heteroaryl-4-trimethylsilyl-1,2.3-triazoles 1b-7b generally in very high yields. The Royal Society of Chemistry 2005.
Studies on Heterocyclic Compounds. Part VI: Synthesis of Bridgehead Nitrogen Triazine and Pyrimidine Heterocycles
Dehuri, S. N.,Pradhan, P. C.,Nayak, A.
, p. 475 - 478 (2007/10/02)
New bridgehead nitrogen containing heterocycles such as thiazolotriazine (IVa and IVb), imidazolotriazine (IVc), triazinotriazine (IVd and IVe) and oxadiazolotriazine (IVf) and several of their derivatives (V) have been prepared by reacting their respective hydrazine (II) with ethylpyruvate and phenyl glycoxalic acid.The diazotization of hydrazine (II) furnished the reactive intermediates (VI) (azido form) and (VII) (tetrazole form) depending on the structure of hydrazines.These intermediates have been used to synthesise bridgehead nitrogen pyrimidine derivatives (VIII) by reacting them with diethyl fumarate.The spectral and chemical evidences show that diazotised products obtained from 2-hydrazino-4-phenyl thiazole (IIa) and 2-hydrazino benzothiazole (IIb) exist in tetrazole form (VIIa) and (VIIb), respectively, whereas the remaining four (IIa-IIf) remain in the azido form (VIc-VIf) in the solid state.