No abstract

A simple, green, and efficient method is introduced for the synthesis of 2-aryl-2,3-dihydroquinolin-4(1H)-ones under mild reaction conditions with improved yields by intramolecular cyclization of o-aminochalcones with zirconyl nitrate [Zn(O)(NO3)2·nH2O] as a water-tolerant Lewis-acid catalyst.

A simple, green, and efficient method is presented for the synthesis of benzoxazoles and benzothiazoles from reaction of oaminophenols, o-aminothiophenols, and aliphatic or aromatic aldehydes using samarium triflate as a reusable acid catalyst under mild reaction conditions in aqueous medium.

Synthesis of New 4-ThiazolidinonesBearing Potentially Active Hetaryl Moieties. -Some benzothiazenyl-4-thiazolidinones, e.g. (VIa), (VIb), and imidazolyl-4-thiazolidinones (VIc) are synthesized and tested for their microbial activity. (VIb) displays activity against Gloeosporium ampelophagum and Fusarium oxysporium. -(INGLE, V. S.; SAWALE, A. R.; INGLE, R. D.; MANE, R. A.; Indian J.

Water-tolerant samarium triflate is found to be a suitable catalyst for the condensation of o-aminophenols and o-aminothiophenols with various aldehydes in aqueous ethanol. -(GOREPATIL, P. B.; MANE, Y. D.; INGLE*, V. S.; Synlett 24 (2013) 17, 2241-2244, http://dx.doi.org/10.1055/s-0033-1339758 ; Dep. Chem., Shri Chhatrapati Shivaji Coll., Omerga 413 606, India; Eng.) -Mais 10-146