A. Aitmambetov et al., Synthetic analogs of naturally occurring flavolignans. X. Reaction of flavones and their thioderivatives with hydroxylamine, CHEM NAT CO, 36(1), 2000, pp. 47-50
1,3-Benzodioxoles, 1,4-benzodioxanes, and 1,5-benzodioxepanes are flavone a
nalogs that hydroxylamine recyclizes into derivatives of 5-(2-hydroxyphenyl
)isoxazoles. They react with thioderivatives with retention of the pyrone r
ing and formation of oximes. Their structures are proven using PMR spectra.