100881-79-6Relevant articles and documents
Synthesis of the First Benzoxazinobenzoxazine and its Tandem Retro-Diels-Alder - Diels-Alder Rearrangement to a Novel Benzoxazinobenzoxazine
Goldschmidt, Zeev,Levinger, Shlomo,Gottlieb, Hugo E.
, p. 7273 - 7276 (1994)
Thermolysis of 3-methyl-4H-1,2-benzoxazine gave the tetracyclic 12a-methyl-7H,12aH,13H-benzoxazinobenzoxazine, which further rearranged to the isomeric 5a-methyl-5aH,11H,13H-benzoxazinobenzoxazine.Thermolysis of the benzoxazinobenzoxazines gave 2-methyl-4H-1,3-benzoxazine, and o-quinone methide which was trapped by ethyl vinyl ether to give 2-ethoxy-dihydrobenzopyran.