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10.23.2.1.2.1.2.3.2 From Tryptophan Esters or Amides and Trifluoroacetic Acid

DOI: 10.1055/sos-SD-110-01096

Joule, J. A.Science of Synthesis Knowledge Updates, (20182158.

Tryptophan esters and amides 470 react with a combination of trifluoroacetic acid, triphenylphosphine, and carbon tetrachloride to produce fully aromatic 1-(trifluoromethyl)-9H-pyrido[3,4-b]indole-3-carboxylates and -carboxamides 471 (Scheme 173).[‌207‌]

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