MORITA, TADAYOSHI;ISE, FUMIAKI;TAKASE, KAHEI, CHEM. LETT., 1981, N 12, 1661-1662
作者:MORITA, TADAYOSHI、ISE, FUMIAKI、TAKASE, KAHEI
DOI:——
日期:——
SYNTHESIS OF 1-(DIMETHYLAMINOMETHYLENE)-6(1<i>H</i>)-AZULENONE, A 1,6-AZULENEQUINONE 1-METHIDE DERIVATIVE
作者:Tadayoshi Morita、Fumiaki Ise、Kahei Takase
DOI:10.1246/cl.1981.1661
日期:1981.12.5
Reaction of 6-hydroxyazulene with DMF-POCl3 followed by treatment with aq HN(CH3)2 gave 1-(dimethylaminomethylene)-6(1H)-azulenone (2) in 100% yield. Treatment of 2 with Ac2O generated 6-acetoxy-1-formylazulene (3) which was hydrolyzed with aq HN(CH3)2 at room temp to give 1-formyl-6-hydroxyazulene (4). Upon heating of 3 with aq HN(CH3)2, 2 was obtained. Alkaline hydrolysis of 2 afforded 4.