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Titolo:
EFFICIENT TAUTOMERIZATION HYDRAZONE-AZOMETHINE IMINE UNDER MICROWAVE IRRADIATION - SYNTHESIS OF [4,3']BIPYRAZOLE AND [5,3']BIPYRAZOLE
Autore:
ARRIETA A; CARRILLO JR; COSSIO FP; DIAZORTIZ A; GOMEZESCALONILLA MJ; DELAHOZ A; LANGA F; MORENO A;
Indirizzi:
UNIV PAIS VASCO,FAC QUIM,APDO 1072 E-20080 SAN SEBASTIAN SPAIN UNIV PAIS VASCO,FAC QUIM E-20080 SAN SEBASTIAN SPAIN UNIV CASTILLA LA MANCHA,FAC QUIM E-13071 CIUDAD REAL SPAIN UNIV CASTILLA LA MANCHA,FAC QUIM,SECC TOLEDO TOLEDO OH 45001
Titolo Testata:
Tetrahedron
fascicolo: 43, volume: 54, anno: 1998,
pagine: 13167 - 13180
SICI:
0040-4020(1998)54:43<13167:ETHIUM>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOLVENT-FREE CONDITIONS; 1,3-DIPOLAR CYCLOADDITION; CYCLO-ADDITIONS; DIPOLAROPHILES; DERIVATIVES; SYSTEMS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
37
Recensione:
Indirizzi per estratti:
Citazione:
A. Arrieta et al., "EFFICIENT TAUTOMERIZATION HYDRAZONE-AZOMETHINE IMINE UNDER MICROWAVE IRRADIATION - SYNTHESIS OF [4,3']BIPYRAZOLE AND [5,3']BIPYRAZOLE", Tetrahedron, 54(43), 1998, pp. 13167-13180

Abstract

Microwave irradiation induces the thermal isomerization of pyrazolyl hydrazones to the corresponding azomethine imines which undergo 1,3-dipolar cycloaddition with electron-poor dipolarophiles in a few min with good yields. By classical heating, several dipolarophiles do not react in comparable reaction conditions. Regiochemistry of bipyrazoles obtained from unsymmetrical dipolarophiles has been inferred by spectroscopic experiments. (C) 1998 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 16:32:41