Utility of Japp–Klingemann reaction for the preparation of 5-carboxy-6-chloroindole via Fischer indole protocol
Yihui Chena, Masayuki Shibatab, Manju Rajeswaranc, Thamarapu Srikrishnand, Sundeep Dugare and Ravindra K. Pandey
Tetrahedron Letters Volume 48, Issue 13, 26 March 2007, Pages 2353-2356
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