1,3-dipolar cycloaddition reactions of levoglucosenone
作者:Alexander J. Blake、Tracey A. Cook、Angus C. Forsyth、Robert O. Gould、R.Michael Paton
DOI:10.1016/s0040-4020(01)80476-2
日期:1992.1
The cycloaddition reactions of levoglucosenone with various 1,3-dipoles have been examined. Benzonitrile oxide underwent regiospecific and face-selective cycloaddition yielding isoxazoline 2a as the major product. D-Glyceraldehyde-derived nitrile oxide 6 was less selective and afforded furazan N-oxide dimer 8 in addition to a mixture of isoxazolines. C,N-Diphenylnitrone and N-benzyl-C-phenylnitrone
BLAKE, ALEXANDER J.;FORSYTH, ANGUS C.;PATON, R. MICHAEL, J. CHEM. SOC. CHEM. COMMUN.,(1988) N 6, 440-442
作者:BLAKE, ALEXANDER J.、FORSYTH, ANGUS C.、PATON, R. MICHAEL
DOI:——
日期:——
Regio- and face-selective 1,3-dipolar cycloadditions to levoglucosenone
作者:Alexander J. Blake、Angus C. Forsyth、R. Michael Paton
DOI:10.1039/c39880000440
日期:——
Benzonitrile oxide and C,N-diphenylnitrone undergo highly regio- and face-selectivecycloaddition reactions with levoglucosenone; in each case the major product results from approach anti to the 1,6-bridge of levoglucosenone, the oxygen of the 1,3-dipole becoming attached to the β-carbon of the enone unit.