Tandem Reactions of 2-Methylimidazoline and 1,2-Dimethylimidazoline with Various Benzoyl Chlorides
作者:Guozhong Ye、Charles Pittman、Chunlong Chen、Sabornie Chatterjee、Willard Collier、Aihua Zhou、Yingquan Song、Debbie Beard
DOI:10.1055/s-0029-1217048
日期:2010.1
The reactions of 2-methylimidazoline with excess benzoyl chlorides under mild conditions generated N,N′-diacyl-β-keto cyclic ketene-N,N′-acetals. Conversely, the corresponding reactions of 1,2-dimethylimidazoline under the same conditions stereoselectively formed the ring-opened (Z)-vinyl benzoates. The latter reactions feature the formation of carbon-carbon bonds, carbon-nitrogen bonds, and carbon-oxygen
2-甲基咪唑啉与过量的苯甲酰氯在温和的条件下反应生成N,N'-二酰基-β-酮基环状烯酮-N,N'-缩醛。相反,在相同条件下1,2-二甲基咪唑啉的相应反应立体选择性地形成了开环的(Z)-乙烯基苯甲酸酯。后一反应的特征是在一个连续的级联中形成碳-碳键,碳-氮键和碳-氧键。 酰基乙烯酮-N,N'-乙缩醛-碳-碳键形成-2-甲基咪唑啉-1,2-二甲基咪唑啉