- Regioselectivity of the reactions of 4,5-diphenylimidazole-2-thione with 1-chloro-2,3-epoxy-propane and 1-bromo-propene, efficient precursors for imidazo[2,1-b]thiazine and thiazole. Effect of microwave and solid support
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(Chemical Equation Presented) A solid support under microwave (MW) irradiation without solvent allowed the synthesis of the 2,3-epoxy-propyl- thioimidazole 4, regioselectively, and prohibited its cyclization to give the imidazo[2,1-b]thiazine 3 from the r
- Aouad, Mohamed R.,Rezki, Nadjet,El Ahsry, El Sayed H.
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experimental part
p. 1321 - 1327
(2009/04/07)
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- Novel regioselective hydroxyl-alkylation of 4,5-diphenylimidazole-2-thione and a competitive intramolecular ring closure of the S-hydroxyalkyl-imidazoles to imidazo[2,1-b]thiazines and thiazoles. role of catalyst, microwave irradiation, and solid support
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Under both conventional method (CM) and microwave (MW) irradiation (MWI) conditions, alkylation of 4,5-diphenylimidazole-2-thione (1) with halogeno-alkanols 2 or 5, chloroglycerol 11 and 2,3-O-isopropylidene-1-O-(p- tolylsulfonyl)-glycerol (8) in presence
- El Ashry,Rashed,Awad,Ramadan,Abdel-Maggeed,Rezki
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p. 423 - 435
(2008/03/12)
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- RECYCLIZATION OF SMALL RINGS VI. SYNTHESIS OF THIIRANO-OXIRANE MONOMERS OF THE IMIDAZOLE AND 1,2,4-TRIAZOLE SERIES
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The respective N-(2,3-epithiopropyl)-N'-(2,3-epoxypropyl) derivatives of imidazole-2-ones and 1,2,4-triazol-4-ones, which are a new type of monomer, were synthesized by the reaction of imidazole-2-thiones and 1,2,4-triazole-5-thiones with epichlorohydrin.
- Korotkikh, N. I.,Aslanov, A. F.,Shvaika, O. P.
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p. 1525 - 1531
(2007/10/02)
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