作者:J. Donald Albright、Xuemei Du
DOI:10.1002/jhet.5570370107
日期:2000.1
The synthesis of 7,8-dihydro-5(6H)-quinolinone (3) from commercially available 3-amino-2-cyclohexen-1-one (1) and 3-(dimethylamino)acrolein (4) in 23% yield avoids the preparation of propynal (2). Conversion of 5-(4-methylphenylsulfonyl)-6,7,8,9-tetrahydro-5H-pyrido[3,2-b]azepine (12) to 6-(4-methylphenylsulfonyl)-1,4,5,6-tetrahydropyrazolo[3,4-d]pyrido[3,2-b]azepine (24) is described. Removal of the
从市售的3-氨基-2-环己烯-1-酮(1)和3-(二甲基氨基)丙烯醛(4)合成7,8-二氢-5(6 H)-喹啉酮(3),产率为23%避免准备乳腺(2)。5-(4-甲基苯基磺酰基)-6,7,8,9-四氢-5 H-吡啶并[3,2- b ]氮杂(12)转化为6-(4-甲基苯基磺酰基)-1,4,5,描述了6-四氢吡唑并[3,4- d ]吡啶并[3,2- b ]氮杂(24)。用乙酸中的40%硫酸除去N-(4-甲基苯基磺酰基)基团,得到三环a庚因26。将类似系列的反应应用于5-(4-硝基苯甲酰基)-6,7,8,9-四氢-5 H-吡啶并[3,2- b ] -a嗪(13),得到6-(4-硝基苯甲酰基) -1,4,5,6-四氢吡唑并[3,4- d ]吡啶并[3,2- b ]氮杂(25)。