107922-02-1Relevant articles and documents
Microwave-assisted green synthesis of new imidazo[2,1-b]thiazole derivatives and their antimicrobial, antimalarial, and antitubercular activities
Vekariya, Rajesh H.,Patel, Kinjal D.,Vekariya, Mayur K.,Prajapati, Neelam P.,Rajani, Dhanji P.,Rajani, Smita D.,Patel, Hitesh D.
, p. 6207 - 6231 (2017/10/05)
Abstract: We have synthesized some imidazo[2,1-b]thiazole derivatives by reaction of 1-(2-amino-4-methylthiazol-5-yl)ethanone or ethyl 2-amino-4-methylthiazole-5-carboxylate with α-bromo aralkyl ketones (phenacyl bromides) in presence of polyethylene glycol-400 (PEG-400) as efficient, inexpensive, biodegradable, and green reaction medium and catalyst (dual nature) under Microwave Irradiation (MWI) at 300?W as well as under thermal heating at 90?°C. Moreover, we also synthesized 1-(2-amino-4-methylthiazol-5-yl)ethanone and ethyl 2-amino-4-methylthiazole-5-carboxylate by one-pot reaction of acetyl acetone/ethyl acetoacetate with N-bromosuccinimide (NBS) and thiourea in presence of PEG-400 under microwave irradiation at 180?W. All synthesized compounds were screened for antimicrobial and antimalarial activities. All compounds were found to show good to excellent antibacterial activity, and some analogs exhibited good antimalarial activity.
Features of the reaction of unsymmetrical 2-mercapto-imidazoles with aromatic and aliphatic ketones
Dzhavakhishvili,Borisov,Nikitchenko,Kovalenko
, p. 98 - 105 (2007/10/03)
The cyclization of unsymmetrical 2-mercaptoimidazoles with aliphatic and aromatic ketones has been studied. Using 1H NMR and X-ray analysis it has been shown that 4-R1-1H-2-mercaptoimidazoles undergo selective oxidative cyclization t
Synthesis of new pyridazin-6-ones, pyridazin-6-imines, 4-pyridazinals, and pyridines
Sayed, Samia M.,Khalil, Mohamed A.,Ahmed, Maghraby A.,Raslan, Mohamed A.
, p. 481 - 495 (2007/10/03)
3-Dimethyl-1-[3-methyl-(4H)-5-phenylimidazol[2,1-b]thiazol-2-yl]prop-2-enone 4 couples smoothly with benzenediazonium chloride to yield propanal 5 which is a key intermediate for the synthesis of pyridazinones 9-13, 16 and pyridazine-6-imine 8, 19. Pentadienonitrile 18 was converted into pyridine-3-carbonitrile 20 on refluxing in ethanolic sodium ethoxide solution. Pyrazole 24 was synthesized from the reaction of 5 with 1-chloro-2-phenylhydrazono propan-2-one 22.