The present invention relates to compounds of general formula I,
wherein the groups (Het)Ar and R
1
are defined as in claim
1
, which have valuable pharmacological properties, in particular bind to the GPR40 receptor and modulate its activity. The compounds are suitable for treatment and prevention of diseases which can be influenced by this receptor, such as metabolic diseases, in particular diabetes type 2.
[3+1+1]-type condensation reaction from oximes, anhydrides and potassiumthiocyanate (KSCN) is developed herein. The transformation has good functional group tolerance and various thiazoles were formed smoothly in good to excellent yields under mild reaction conditions. This process involves copper-catalyzed N–O/C–S bond cleavages, activation of vinyl sp2 C–H bond, and C–S/C–N bond formations which are
One-Pot Preparation of Aromatic Amides, 4-Arylthiazoles, and 4-Arylimidazoles from Arenes
作者:Takahiro Yamamoto、Hideo Togo
DOI:10.1002/ejoc.201800730
日期:2018.8.15
Primary aromatic amides, 4‐arylthiazoles, and 4‐arylimidazoles were smoothly obtained from arenes in good yield in onepot via aryl α‐bromoacetylarenes, which were obtained by reacting simple arenes with α‐bromoacetyl chloride and AlCl3, followed by the reaction with molecular iodine and aq. NH3, thioamides, or amidine under transition‐metal‐free conditions.
Synthesis of Thiazoles and Aminothiazoles from β‐Keto Tosylates under Supramolecular Catalysis in the Presence of β‐Cyclodextrin in Water
作者:V. Pavan Kumar、M. Narender、R. Sridhar、Y. V. D. Nageswar、K. Rama Rao
DOI:10.1080/00397910701575913
日期:2007.11
Abstract This is the first report on the supramolecular synthesis of thiazoles/aminothiazoles from β‐keto tosylates and thioamide/thiourea in water in the presence of β‐cyclodextrin in impressive yields. Formation of inclusion complexes was explained from 1H NMR studies.
Efficient synthesis of 2,4-disubstituted thiazoles using ionic liquid under ambient conditions: a practical approach towards the synthesis of Fanetizole
作者:Taterao M. Potewar、Sachin A. Ingale、Kumar V. Srinivasan
DOI:10.1016/j.tet.2007.08.036
日期:2007.11
A highly efficient and rapid synthesis of 2-amino-4-arylthiazoles and 2-methyl-4-arylthiazole from α-bromoketone and thiourea/thioamide is described using room temperature ionicliquid at ambient conditions. The method is simple, rapid and practical, generating thiazole derivatives in excellent isolated yields. This protocol is utilized for a commercially feasible synthesis of an anti-inflammatory