75052-59-4Relevant articles and documents
Method and catalyst for preparing thiazolo [3, 2-alpha] pyridine derivatives
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Paragraph 0049; 0050; 0051, (2017/07/20)
The invention discloses a method and a catalyst for preparing thiazolo [3, 2-alpha] pyridine derivatives, and belongs to the technical field of organic chemical industry. Magnetic material loaded alkaline ionic liquid is used as the catalyst, a molar ratio of aromatic aldehyde to active methylene compounds to methyl thioglycolate in preparation reaction is 2:(2-2.5):1, the molar weight, which is computed on the basis of alkaline ionic liquid on load, of the magnetic material loaded alkaline ionic liquid, which is the catalyst, is 8-12% of the molar weight of the methyl thioglycolate, and the reflux reaction time is 17-67 min. Compared with other preparation methods, the method and the catalyst have the advantages that the catalyst is low in loss during recycling and is high in recyclable times and product selectivity, integral preparation procedures are simple, convenient and economical, and accordingly industrial large-scale production can be facilitated.
Simple, three-component, highly efficient green synthesis of thiazolo[3,2-a]pyridine derivatives under neat conditions
Mekheimer, Ramadan Ahmed,Hilmy, Noha Mohamed,Hameed, Afaf Abdel,Dacrory, Sawsan,Sadek, Kamal Usef
experimental part, p. 2511 - 2516 (2011/08/05)
Green, highly efficient, three-component syntheses of thiazolo-[3,2-a] pyridine derivatives via reaction of malononitrile, aromatic aldehydes, and 2-mercaptoacetic acid with a catalytic amount of piperidine without solvent with molar ratios of 2:2:1.2 and 2:2.2:1, respectively, has been reported. Taylor & Francis Group, LLC.
THE REACTION OF THIOGLYCOLIC ACID WITH α,β-UNSATURATED NITRILES: A NEW ROUTE FOR THE SYNTHESIS OF THIAZOLOPYRIDINES
Elnagdi, Mohamed Hilmy,Elmoghayar, Mohamed Rifat Hamza,Elghandour, Ahmed Hafez Hussein,Sadek, Kamal Usef
, p. 745 - 751 (2007/10/02)
The reaction of cinnamonitriles with thioglycolic acid in the presence of a basic catalyst affords thiazolopyridine derivatives.