Journal
SYNLETT
Volume -, Issue 13, Pages 2074-2076Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/s-2003-41463
Keywords
ceric ammonium nitrate; ultrasound; indole; Michael reaction
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Ceric ammonium nitrate efficiently catalyzes the Michael addition of indole to alpha,beta-unsaturated carbonyl ketones by means of alkylation of indole under ultrasonic irradiation to afford the corresponding adduct in excellent yields. The substitution on the indole nucleus occurred exclusively at the 3-position, and N-alkylation products have not been observed.
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