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Titolo:
DIELS-ALDER CYCLOADDITION OF VINYLPYRAZOLES - SYNERGY BETWEEN MICROWAVE IRRADIATION AND SOLVENT-FREE CONDITIONS
Autore:
DIAZORTIZ A; CARRILLO JR; DIEZBARRA E; DELAHOZ A; GOMEZESCALONILLA MJ; MORENO A; LANGA F;
Indirizzi:
UNIV CASTILLA LA MANCHA,FAC QUIM E-13071 CIUDAD REAL SPAIN UNIV CASTILLA LA MANCHA,FAC QUIM,SECC TOLEDO E-45001 TOLEDO SPAIN
Titolo Testata:
Tetrahedron
fascicolo: 27, volume: 52, anno: 1996,
pagine: 9237 - 9248
SICI:
0040-4020(1996)52:27<9237:DCOV-S>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
1-PHENYL-4-VINYLPYRAZOLE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
16
Recensione:
Indirizzi per estratti:
Citazione:
A. Diazortiz et al., "DIELS-ALDER CYCLOADDITION OF VINYLPYRAZOLES - SYNERGY BETWEEN MICROWAVE IRRADIATION AND SOLVENT-FREE CONDITIONS", Tetrahedron, 52(27), 1996, pp. 9237-9248

Abstract

When subjected to microwave irradiation and solvent-free conditions vinylpyrazoles undergo Diels-Alder cycloadditions within 6-30 min to give acceptable yields of easily purified products. This methodology overcomes the most important disadvantages of the classical conditions and it permits the reaction to be extended to low reactive dienophiles, such as ethyl phenylpropiolate, not described by classical heating. The regiochemistry of the later reaction has been inferred by NOE experiments and molecular orbital calculations. Copyright (C) 1996 Elsevier Science Ltd

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Documento generato il 04/12/20 alle ore 16:20:43