Synthesis of cucurbitine derivatives: facile straightforward approach to methyl 3-amino-4-aryl-1-methylpyrrolydine-3-carboxylates
作者:Daniel Blanco-Ania、Pedro H.H. Hermkens、Leo A.J.M. Sliedregt、Hans W. Scheeren、Floris P.J.T. Rutjes
DOI:10.1016/j.tet.2009.04.059
日期:2009.7
A general three- or four-step synthesis of cis- and trans-substituted cucurbitine (3-aminopyrrolidine-3-carboxylic acid) derivatives from methyl 2-nitroacetate is reported. The first step utilizes a Knoevenagel condensation with five different aromatic imines or their corresponding aldehydes to form (Z/E)-mixtures of α-nitro acrylates. The second step gives rise to the pyrrolidine-core structures of
KOCHETKOV, K. A.;BABIEVSKIJ, K. K.;BELIKOV, V. M.;EVDOKIMOVA, L. V., IZV. AN CCCP. CEP. XIM., 1982, N 2, 439-440
作者:KOCHETKOV, K. A.、BABIEVSKIJ, K. K.、BELIKOV, V. M.、EVDOKIMOVA, L. V.
DOI:——
日期:——
FOUCAUD, A.;RAZORILALANA-RABEARIVONY, C.;LOUKAKOU, E.;PERSON, H., J. ORG. CHEM., 1983, 48, N 21, 3639-3644
作者:FOUCAUD, A.、RAZORILALANA-RABEARIVONY, C.、LOUKAKOU, E.、PERSON, H.
DOI:——
日期:——
MELOT, JEAN MARIE;TEXIER-BOULLET, FRANCOISE;FOUCAUD, ANDRE, TETRAHEDRON, 44,(1988) N 8, 2215-2224
作者:MELOT, JEAN MARIE、TEXIER-BOULLET, FRANCOISE、FOUCAUD, ANDRE
DOI:——
日期:——
Alumina supported potassium fluoride promoted reaction of nitroalkanes with electrophilic alkenes : synthesis of 4,5-dihydro furans and isoxazoline n-oxides
作者:Jean Marie Mélot、Francoise Texier-Boullet、André Foucaud
DOI:10.1016/s0040-4020(01)81729-4
日期:1988.1
The reaction of secondary nitro alkanes 1 with α,β-unsaturated ketones 2 in the presence of alumina-supported potassiumfluoride in acetonitrile gave 4,5-dihydrofurans 3 in high yields ; 1-nitropropane reacted with 2 to give a mixture of 4,5-dihydrofurans and furans. Nitroalkenes 17 reacted with nitroalkanes to give isoxazoline N-oxides 18 and 19 in good overall yields.