Reactions of 6-Acetyl-4-methyl-5-(1-pyrrolyl)-2-phenylthieno- [2,3-d]pyrimidine in Heterocyclic Synthesis: Convenient Route to Some Schiff's Bases, Chalcones, Pyridines, Pyridin-2(1H)-ones and 2H-Pyran-2-one Derivatives Incorporating a 5-(1-Pyrrolyl)-2-ph
作者:Yuh-Wen Ho、Wei-Hua Yao
DOI:10.1002/jccs.200500048
日期:2005.4
6-(3-substituted-acryloyl)-5-(1-pyrrolyl)-4-methyl-2-phenylthieno[2,3-d]pyrimidines 15a-k and 6-[3-cyano-2-ethoxy-4-(4-substituted-phenyl)-pyridin-6-yl]-5-(1-pyrrolyl)-4-methyl-2-phenyl-thieno[2,3-d]pyrimidines 21a-f under basic conditions, respectively. On the other hand, the 6-(3-cyano-1,2-dihydro-4-substituted-2-oxopyridin-6-yl)-5-(1-pyrrolyl)-4-methyl-2-phenylthieno[2,3-d]pyrimidines 26a,b and 6-(3-subs
用 2,5-二甲氧基四氢呋喃处理 6-乙酰基-5-氨基-4-甲基-2-苯基噻吩并[2,3-d]嘧啶 3 得到 6-乙酰基-5-(1-吡咯基)-4-甲基-2-苯基噻吩并[2,3-d]嘧啶4,可与适当的伯胺5a-f反应生成相应的席夫碱衍生物6a-f。乙酰基化合物 4 与适当的芳基醛 14a-k 和芳基亚甲基丙二腈 18a-f 反应得到相应的 6-(3-取代丙烯酰基)-5-(1-吡咯基)-4-甲基-2-苯基噻吩并[2,3- d]嘧啶 15a-k 和 6-[3-氰基-2-乙氧基-4-(4-取代苯基)-吡啶-6-基]-5-(1-吡咯基)-4-甲基-2-苯基-噻吩并[2,3-d]嘧啶21a-f分别在碱性条件下。另一方面,6-(3-氰基-1,2-二氢-4-取代-2-氧代吡啶-6-基)-5-(1-吡咯基)-4-甲基-2-苯基噻吩[2, 3-d]嘧啶26a,