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Title: A facile synthesis of indolo[3,2-c]xanthones
Authors: Vandana, T
Prasad, K J Rajendra
Issue Date: Apr-2005
Publisher: CSIR
IPC Code: Int.Cl.7 C 07 D 209/04
Abstract: Synthesis of hitherto unknown indolo[3,2-c]xanth-6-ones 5 has been achieved from the easily accessible 1-hydroxycarbazoles 1. 1-Hydroxycarbazoles 1 on condensation with salicylic acid in the presence of ZnCl2/POCl3 give 2,4-disalicyloyl-1-hydrox­y­carba­zoles  3 and 2-salicyloyl-1-hydroxycarbazoles 4. Acid catalysed cyclisation of compounds 4 yield the title compounds.
Page(s): 815-818
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.44B(04) [April 2005]

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