G. Marc et al., CYCLOADDITION VS CONJUGATIVE MICHAEL-TYPE ADDITION OF 2-ETHOXY-3-MORPHOLINOBUTA-1,3-DIENE WITH NITROOLEFINS, Journal of the Chemical Society. Perkin transactions. I, (3), 1997, pp. 223-228
The reactivity of the title dienamine towards conjugated nitroolefins
has been investigated. With 1-nitrocyclopentene carbocyclic products l
argely predominated, whereas with 1-nitrocyclohexene only Michael-type
products were formed, The behaviour of beta-nitrostyrene was found to
be dependent on the reaction conditions used.