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 potassium fluoride 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.
在乙腈中氧化铝负载的氟化钾存在下,仲硝基烷烃1与α,β-不饱和酮2的反应得到高产率的4,5-二氢呋喃3。1-硝基丙烷与2反应生成4,5-二氢呋喃和呋喃的混合物。硝基烯烃17与硝基烷反应以良好的总收率得到异恶唑啉N-氧化物18和19。