Synthetic studies on indoles and related compounds. XXV. The Friedel-Crafts acylation of ethyl 1H-indole-2-carboxylate. (2).
作者:Masanobu TANI、Tsuyoshi AOKI、Sadao ITO、Shigenobu MATSUMOTO、Mami HIDESHIMA、Kaoru FUKUSHIMA、Ryoichi NOZAWA、Takako MAEDA、Mayumi TASHIRO、Yuusaku YOKOYAMA、Yasuoki MURAKAMI
DOI:10.1248/cpb.38.3261
日期:——
The Friedel-Crafts acylation of ethyl 1H-indole-2-carboxylate (1) with various acylating reagents having a functional group or hetero atom and the acylation of some derivatives (6, 7, 8, and 9) of ethyl 1H-indole-2-carboxylate (1) with simple acylating reagents are described. Acylation occurred at the C3-position or on the benzene moiety (mainly at the C5-position) of the indole nucleus. The regioselectivity of the above acylation of indoles (1, 6, 7, 8, and 9) is discussed.
本研究描述了 1H-吲哚-2-甲酸乙酯(1)与各种具有官能团或杂原子的酰化试剂的弗里德尔-卡夫酰化反应,以及 1H-吲哚-2-甲酸乙酯(1)的一些衍生物(6、7、8 和 9)与简单酰化试剂的酰化反应。酰化发生在吲哚核的 C3 位或苯分子上(主要是 C5 位)。讨论了上述吲哚(1、6、7、8 和 9)酰化反应的区域选择性。