Synthesis of some novel fused oxo- and thiopyrimidines<i>via</i>an intramolecular friedel-crafts reaction
作者:Akbar Mobinikhaledi、Naser Foroughifar、Abdollah Javidan、Ehsan Amini
DOI:10.1002/jhet.5570440309
日期:2007.5
1H-Indeno[1,2-d]pyrimidine-2,5(3H,9bH)-dione derivatives 2(a-i) and 2,3-dihydro-2-thioxo-1H-indeno[1,2-d]pyrimidine-5(9bH)-ones 2(j-q) were synthesized via an intramolecular Friedel-Crafts reaction between the aryl and ester group of ethyl 6-methyl-4-aryl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylates 1a-i, and their thioxo analogs using AlCl3 and acetyl chloride in nitrobenzene. Yields of the products
1 H-茚并[1,2 - d ]嘧啶-2,5(3 H,9b H)-二酮衍生物2(ai)和2,3-二氢-2-thioxo-1 H-茚并[1,2- d ]嘧啶-5(9b H)-ones 2(jq)是通过分子内的乙基6-甲基-4-芳基-2-芳基-2-氧代-1,2,3的芳基和酯基之间的Friedel-Crafts反应合成的, 4-四氢嘧啶-5-羧酸盐1a-i及其使用AlCl 3的thioxo类似物和乙酰氯在硝基苯中。用THF洗涤后,产物的产率为约45-69%。IR和NMR光谱以及元素分析被用于鉴定这些化合物。