title: High regioselective ultrasonic-assisted synthesis of 2,7-diaryl-4,7-dihydropyrazolo[1,5-a]pyrimidine-5-carboxylic acids.
abstract: New and high regioselective method of the synthesis of 2,7-diaryl-4,7-dihydropyrazolo[1,5-a]pyrimidine-5-carboxylic acids by reaction of 3-aryl-5-aminopyrazoles with arylidenpyruvic acid at room temperature under ultrasonication was developed and discussed.
authors: SSI, Institute for Single Crystals, NAS of Ukraine, Lenin Ave 60, Kharkiv 61001, Ukraine. chebanov@isc.kharkov.com
authors: Valentin A
authors: VA
authors: Chebanov
authors: Yana I
authors: YI
authors: Sakhno
authors: Sergey M
authors: SM
authors: Desenko
mesh_terms: D002264:Carboxylic Acids / Q000138:chemical synthesis* / Q000528:radiation effects*; D019220:High-Energy Shock Waves; D011720:Pyrazoles / Q000737:chemistry* / Q000528:radiation effects*; D019289:Pyruvic Acid / Q000737:chemistry* / Q000528:radiation effects*; D011829:Radiation Dosage; D013010:Sonication / Q000379:methods*; D013237:Stereoisomerism
chemical_list: D002264:Carboxylic Acids; D011720:Pyrazoles; D019289:Pyruvic Acid