2-Chloro-4,5-dihydroimidazole, 8. Syntheses of Novel Fused Heterocyclic Systems by Reactions of 1,2-Dihydro-2-(4,5-dihydroimidazol-2-yl)phthalazin-1-ol with Active Methylene Compounds
作者:Franciszek Saczewski、Maria Gdaniec
DOI:10.1002/jlac.199619961028
日期:1996.10
Three-component reactions of 1 with pyridazine or phthalazine afforded the 1,2-dihydro derivatives 2a and 2b, respectively. A similar reaction of 1 with phthalazine performed in aqueous NaOH led to the formation of pseudobase 3. The latter compound proved to be an excellent substrate for the preparation of a series of novel 1,2-dihydrophthalazine derivatives 4a–c, 5 as well as 6a–b by reactions with a variety
1与哒嗪或酞嗪的三组分反应分别得到1,2-二氢衍生物2a和2b。在NaOH水溶液中进行的1与酞嗪的相似反应导致假碱3的形成。通过与多种活性亚甲基化合物反应,后一种化合物被证明是制备一系列新型1,2-二氢酞嗪衍生物4a–c,5和6a–b的极佳底物。