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2005
Indole derivatives
R 0140
TiCl4/tBuNH2 as the Sole Catalyst for a Hydroamination-Based Fischer Indole
Synthesis. — A combination of TiCl4 and tert-butylamine is described as highly effi14- 126 cient
for regioselective hydroamination reaction of alkynes with hydrazines resulting
in formation of indoles. From anilines and the diyne (VIII) pyrroles are isolated under
similar reaction conditions. — (ACKERMANN*, L.; BORN, R.; Tetrahedron Lett. 45
(2004) 52, 9541-9544; Fachbereich Chem., Ludwig-Maximilians-Univ., D-81377
Muenchen, Germany; Eng.) — Mais
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