Chemical and Pharmaceutical Bulletin p. 48 - 54 (1996)
Update date:2022-08-03
Topics:
Tani
Ariyasu
Nishiyama
Hagiwara
Watanabe
Yokoyama
Murakami
The Friedel-Crafts acylation of ethyl pyrrole-2-carboxylate (3) was studied under several conditions using various Lewis acids and acyl chlorides. The acylation with various acyl chlorides in the presence of aluminum chloride gave exclusively ethyl 4-acylpyrrole-2-carboxylate (5), whereas weaker Lewis acids such as zinc chloride and boron trifluoride etherate gave a mixture of ethyl 4- and 5-acylpyrrole-2-carboxylates.
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Doi:10.1002/(SICI)1099-1344(199602)38:2<105::AID-JLCR821>3.0.CO;2-X
(1996)Doi:10.1248/cpb.45.1558
(1997)Doi:10.1021/ja00001a021
(1991)Doi:10.1021/cn500113c
(2014)Doi:10.1016/S0040-4020(96)00068-3
(1996)Doi:10.1016/0040-4039(95)02400-X
(1996)