作者:Mauro Mazzei、Giorgio Roma、Aldo Ermili
DOI:10.1002/jhet.5570150416
日期:1978.6
Reaction of 1-oxo-3-dialkylamino-1H-naphtho[2,1-b]pyrans, 4-hydroxycoumarin and formaldehyde gave rise to the formation of 1-oxo-2-((2-oxo-4′-hydroxy-2′H-1′-benzopyran-3′-yl)-melhyl J-3-dialkylamino-1H-naphtho[2,1-b]pyrans. When these compounds were refluxed in glacial acetic acid, cyclization occurred and 6,8-dioxo-6H,7H,07-,5,15,16-trioxadibenzo[a,j]-naphthacene arose by cleavage of the dialkylamino
1-氧代-3-二烷基氨基-1 H-萘并[ 2,1- b ]吡喃,4-羟基香豆素和甲醛的反应导致了1-氧代-2-((2-氧代-4'-羟基-2' ħ -1'-苯并吡喃-3'-基)-melhyl J-3二烷基氨基- 1 H ^ -萘并[2,1- b ]吡喃。当这些化合物在冰醋酸中回流,发生环化和6通过裂解二烷基氨基基团产生了,8-二氧代-6 H,7 H,07-,5,15,16-三恶二苯并[ a,j ]-萘并苯,以类似的方式,从合适的产物开始,许多其他的三氧并萘或合成了氮杂二氧杂萘并衍生物。