作者:Eric Francotte、Robert Merényi、Brigitte Vandenbulcke-Coyette、Heinz-Günther Viehe
DOI:10.1002/hlca.19810640425
日期:1981.6.10
2 can be substituted by alkoxy groups. Two kinds of cycloaddition reaction of 1 have been observed: (i) reaction of the NO group with dienes gives 3, 6-dihydrooxazine derivatives 6 which isomerise to epoxyepimines 7 in most cases of β-substituted nitrosoalkenes; (ii) if 4, 5-dihydrooxazines 22 are obtained, the cycloaddition of the nitrosoalkenes as 4π-component is presumed.
已经合成并表征了一些α-和β-卤代亚硝基烯烃1。肟前体2的卤素原子可以被烷氧基取代。两种环加成反应的1已经观察到:(i)所述NO基团与二烯烃的反应得到3,6-二氢恶嗪衍生物6,其异构化成epoxyepimines 7在β取代nitrosoalkenes的大多数情况下; (ii)如果获得4,5-二氢恶嗪22,则推测亚硝基烯烃作为4π-组分的环加成。