Some 3-aryl-4-methylene-5-morpholino-4,5-dihydroisoxazoles (2) were treated with 2,4-diphenyl-3-methyl-1,3-oxazolium 5-oxide (1) to give corresponding cycloaddition products, namely spiro[isoxazolo-4,3′-pyrroles](3) and (4). The steric configuration of the spiro-derivatives has been assigned on the basis of 1H and 13C n.m.r. evidence.
Cycloaddition reactions of 2,4-diphenyl-3-methyl-1,3-oxazolium 5-oxide with 4-methylene-4,5-dihydroisoxazoles: 1H and 13C nuclear magnetic resonance stereochemical assignments of the products / P. Dalla Croce, C. La Rosa, M.L. Gelmi, M. Ballabio. - In: JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS II. - ISSN 0300-9580. - 3(1988), pp. 423-425. [10.1039/p29880000423]
Cycloaddition reactions of 2,4-diphenyl-3-methyl-1,3-oxazolium 5-oxide with 4-methylene-4,5-dihydroisoxazoles: 1H and 13C nuclear magnetic resonance stereochemical assignments of the products
P. Dalla CrocePrimo
;C. La RosaSecondo
;M.L. GelmiPenultimo
;
1988
Abstract
Some 3-aryl-4-methylene-5-morpholino-4,5-dihydroisoxazoles (2) were treated with 2,4-diphenyl-3-methyl-1,3-oxazolium 5-oxide (1) to give corresponding cycloaddition products, namely spiro[isoxazolo-4,3′-pyrroles](3) and (4). The steric configuration of the spiro-derivatives has been assigned on the basis of 1H and 13C n.m.r. evidence.
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