Parallel synthesis of 4,5-dihydro-1,2,4-oxadiazoles using soluble polymer support
作者:Xu-Feng Lin、Jian Zhang、Yan-Guang Wang
DOI:10.1016/s0040-4039(03)00852-9
日期:2003.5
1,3-Dipolar cycloadditions of nitrile oxide generated in situ on solublepolymer with a variety of imines provided a library of 4,5-dihydro-1,2,4-oxadiazoles in good yields and purity.
Stereoselective Synthesis of <i>trans</i> β-Lactams through Iridium-Catalyzed Reductive Coupling of Imines and Acrylates
作者:Jennifer A. Townes、Michael A. Evans、Jerome Queffelec、Steven J. Taylor、James P. Morken
DOI:10.1021/ol020106u
日期:2002.7.1
[GRAPHICS]Iridium-catalyzed reductive coupling of acrylates and imines provides trans beta-lactams with high diastereoselection. The optimal catalyst allows for the synthesis of trans beta-lactams bearing aromatic, alkenyl, and alkynyl side chains. This reaction appears to proceed through a reductive Mannich addition-cyclization mechanism. Examination of substituent effects reveals a linear Hammett correlation for both the N-aryl group on the imine and the aryloxy group on the acrylate, thereby pointing to rate-determining cyclization in the reaction mechanism.
New Methods for the Synthesis of Imidazoline-N-Oxides
作者:Necdet Coskun、Dogan Sümengen
DOI:10.1080/00397919308011268
日期:1993.6
DELTA3-Imidazoline-3-oxides were prepared by the reaction of corresponding aromatic Schiff bases with syn-2-bromoacetophenone oxime. 5,6-Dihydro-4H-1,2,5-oxadiazines were isolated as byproduct in some instances.
Abiraj; Dinesh; Srinivasa, Journal of Chemical Research, 2006, # 8, p. 534 - 535
作者:Abiraj、Dinesh、Srinivasa、Gowda, D. Channe
DOI:——
日期:——
KERZHNER, B. K.;KOFANOV, V. I.;VRUBEL, T. L., J. LIQUID CHROMATOGR., 11,(1988) N5, C. 3091-3102