Murakami, Yasuoki published the artcileSynthetic studies of indoles and related compounds. Part 16. Synthesis of linear ethyl 9-methoxy-1H-benz[f]indole-2-carboxylate, Synthetic Route of 20538-12-9, the publication is Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) (1988), 3005-12, database is CAplus.
The preparation of the title compound (I) is reported. I has different phys. properties from those of the indole previously reported (Goldsmith, E. A. and Lindwall, H. G., 1953) as I. I was prepared via a Friedel-Crafts acylation of Et pyrrole-2-carboxylate with phthalic anhydride and by the room temperature AlCl3-MeOPh induced debenzylation of N-benzylindoes, e.g., II, that contain a methoxy substituent.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) published new progress about 20538-12-9. 20538-12-9 belongs to indole-building-block, auxiliary class Indole,Ester,Ether, name is Ethyl 7-methoxy-1H-indole-2-carboxylate, and the molecular formula is C12H13NO3, Synthetic Route of 20538-12-9.
Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles