Maquestiau, A.; vanden Eynde, J.-J.; Monclus, M., Bulletin des Societes Chimiques Belges, 1985, vol. 94, # 8, p. 575 - 584
作者:Maquestiau, A.、vanden Eynde, J.-J.、Monclus, M.
DOI:——
日期:——
MAQUESTIAU, A.;VANDEN, EYNDE, J. -J.;MONCLUS, M., BULL. SOC. CHIM. BELG., 1985, 94, N 8, 575-583
作者:MAQUESTIAU, A.、VANDEN, EYNDE, J. -J.、MONCLUS, M.
DOI:——
日期:——
Synthesis and Reactivity of β-Amino α,β -Unsaturated Ketones and Esters Using K-10 Montmorillonite
作者:Mara E. F. Braibante、Hugo S. Braibante、Lauri Missio、Adriano Andricopulo
DOI:10.1055/s-1994-25595
日期:——
A series of β-amino α,β-unsaturated ketones 3a-f and esters 3g-l may be conveniently prepared by dispersing ammonia (NH4OH solution), primary amines and 1,3-diketones or 1,3-keto esters on K-10 montmorillonite without solvent. This procedure was also applicable to the reactions of 3a and 3g with phenyl isocyanate and phenyl isothiocyanate which afford selectively the C-adducts 4a-d.
Reactivity of α-acylated β-enamino ketones and esters: Synthesis of pyrazoles
作者:Lauri J. Missio、Hugo S. Braibante、Mara E. F. Braibante
DOI:10.1002/jhet.5570330441
日期:1996.7
The reactivity of the enamino compounds 4-amino-3-phenylamino(thio)carbonyl-3-penten-2-one 1 and 2 and ethyl 3-amino-2-phenylamino(thio)carbonyl-2-butyrate 7 and 8 was studied using the reaction with hydrazine hydrate and hydrazine hydrochloride to evaluate the 1,3 electrophilic center of the compounds by the formation of the pyrazole rings. The pyrazoles 3, 4, 5, 9, 11 and 13 were obtained depending