SA Glover, KM Jones, IR McNee… - Journal of the Chemical …, 1996 - pubs.rsc.org
NAcyl-3, 4-dihydro-1H-2, 1-benzoxazines (3) undergo a thermal decomposition involving
loss of formaldehyde in a retro-Diels–Alder reaction. The resultant N-acylazaxylylenes (4) …