shown by the conversion of (10 H )-dipyrrin-1-ones to (11 H )-dipyrrin-1-ol methyl and ethyl ethers in 90% yield from heating in neat trimethyl or triethyl phosphite at 160°C. Unlike the parent dipyrrinones, which form intermolecularly hydrogen-bonded dimers in CHCl3, their lactim ethers are shown to be monomeric by vapor pressure osmometry. The latter react with boron trifluoride etherate to N , N
通过将(10 H )-联
吡啶-1-酮转化为(11 H )-联
吡啶-1-醇甲基和
乙基醚,可以得到高产率的内酰胺直接转化为内酰胺 醚,在纯净的加热下产率为90%。在160℃下用亚
磷酸三甲酯或
亚磷酸三乙酯。与母体二
吡啶酮不同,后者在CHCl 3中形成分子间氢键结合的二聚体,而它们的丙二
酰亚胺醚通过蒸气压渗透压法显示为单体。后者与
三氟化硼乙醚化物反应,以 Ñ , Ñ '-bridged BF 2个衍
生物表现出强荧光(φ ˚F0.6-0.8)在535 nm附近。获得了py
吡咯烷酮的内酰胺基醚和内酰胺基醚2,3-
二乙基-7,8-二甲基-(10 H )-二
吡喃-1-酮的BF 2衍
生物的 X射线晶体结构。