938185-59-2Relevant articles and documents
Model construction for the A-B-C ring system of lysergic acid via Vilsmeier-Haack-type cyclization of 1H-indole-4-propanoic acid derivatives
Kurokawa, Masayuki,Watanabe, Toshiko,Ishikawa, Tsutomu
, p. 574 - 587 (2008/02/07)
Vilsmeier-Haack-type cyclization of 1H-indole-4-propanoic acid derivatives was examined as model construction for the A-B-C ring system of lysergic acid (1). Smooth cyclization from the 4 position of 1H-indole to the 3 position was achieved by Vilsmeier-H