Peculiarities of the behavior of succinyl dichloride in Friedel-Crafts reaction with thiophenes*
作者:V. I. Smirnov、A. V. Afanas’ev、L. I. Belen’kii
DOI:10.1007/s10593-011-0653-z
日期:2011.1
The reactions of thiophene, 2-methyl-, and 2-bromothiophene with succinyl dichloride in the presence of AlCl3, TiCl4, and SnCl4 have been studied. The effect of the acylation conditions, the relative amounts and nature of the Lewis acid on the ratio and yields of the 1,4-di(2-thienyl)-1,4-diones and 4-oxo-4-(2-thienyl)butyric acids formed have been demonstrated. Under the reaction conditions, the formation
在AlCl 3,TiCl 4和SnCl 4的存在下,研究了噻吩,2-甲基和2-溴噻吩与琥珀酰二氯的反应。酰化条件,路易斯酸的相对数量和性质对1,4-二(2-噻吩基)-1,4-二酮和4-氧代-4-(2-噻吩基)的比率和收率的影响已证明形成了丁酸。在反应条件下,证明了4,4-二(2-噻吩基)丁-3-烯酸(在许多情况下是主要产物)的形成以及4,4-二(2-噻吩基)-丁内酯的形成。