2-OXO-2-[4-(TRIFLUOROMETHOXY)PHENYL]ACETALDEHYDE

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CAS: 1060812-64-7
MF: C9H5O3F3
MW: 218.1294
Synonyms: 2-OXO-2-[4-(TRIFLUOROMETHOXY)PHENYL]ACETALDEHYDE

REPORT BY

Christopher Hulme

The University of Arizona
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Co-reporter: Guillermo Martinez-Ariza, Muhammad Ayaz, Christopher Hulme
pp: 6719-6721
Publication Date(Web):4 December 2013
DOI: 10.1016/j.tetlet.2013.09.113
A straightforward procedure for the preparation of N-quinoxaline-indoles is presented. A base-catalyzed one-pot addition of indoles to a preformed α-iminoketone proceeds on the N-1 indole and the subsequent adduct undergoes an acid-mediated deprotection of an internal amino nucleophile, intramolecular cyclization, and final oxidation generating N-1-quinoxaline-indoles in good yield.A novel route to N-1-quinoxaline-indoles is presented. Base-catalyzed addition of indole to preformed α-iminoketones proceeds at the N-1 indole position and the subsequent adduct undergoes an acid-mediated Boc-deprotection, cyclization, and oxidation generating N-1-quinoxaline-indoles in good yield in a succinct three steps.Image for unlabelled figure