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Titolo:
Novel CuX2-mediated cyclization of acid-base salts of (L)-cinchonidine or (D)-/(L)-alpha-methylbenzylamine and 2,3-allenoic acids in an aqueous medium. An efficient entry to optically active beta-halobutenolides
Autore:
Ma, SM; Wu, SL;
Indirizzi:
Chinese Acad Sci, Shanghai Inst Organ Chem, Organomet Chem Lab, Shanghai 200032, Peoples R China Chinese Acad Sci Shanghai Peoples R China 200032 200032, Peoples R China
Titolo Testata:
CHEMICAL COMMUNICATIONS
fascicolo: 5, , anno: 2001,
pagine: 441 - 442
SICI:
1359-7345(2001):5<441:NCCOAS>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
VINYLOGOUS URETHANE APPROACH; CROSS-COUPLING REACTIONS; ABSOLUTE-CONFIGURATION; ASYMMETRIC-SYNTHESIS; OKADAIC ACID; TERMINAL ALKYNES; GENERAL-ROUTE; BUTENOLIDES; 2(5H)-FURANONES; BUTYROLACTONES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Ma, SM Chinese Acad Sci, Shanghai Inst Organ Chem, Organomet Chem Lab, 354Fenglin Lu, Shanghai 200032, Peoples R China Chinese Acad Sci 354 Fenglin Lu Shanghai Peoples R China 200032 na
Citazione:
S.M. Ma e S.L. Wu, "Novel CuX2-mediated cyclization of acid-base salts of (L)-cinchonidine or (D)-/(L)-alpha-methylbenzylamine and 2,3-allenoic acids in an aqueous medium. An efficient entry to optically active beta-halobutenolides", CHEM COMMUN, (5), 2001, pp. 441-442

Abstract

The treatment of 1:1 salts of 2,3-allenoic acid-chiral base with CuX2 (4 equiv.) in an aqueous medium, i.e. acetone-H2O (2:1), at 60-65 degreesC afforded beta -halobutenolides with high enantiopurities in good to excellent yields.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 01:26:12