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Heterocycles

Heterocycles

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Effect of the use of bulky alkylphosphines in the Sonogashira coupling with aqueous ammonia

Published:3 September 2008 DOI: 10.3987/COM-08-S(N)12
A. Mori,?Sachio Fukuoka,?T. Naito,?Hiroki Sekiguchi,?Takashi Somete

Abstract

The Sonogashira coupling of terminal alkynes and aryl bromides with aqueous ammonia catalyzed by the in situ formed palladium complex of a bulky alkylphosphine furnishes the coupling product at room temperature. One-pot reaction of the Sonogashira coupling and the following intramolecular cyclization with 2-hydroxy or 2-amino aryl bromide leads to a facile synthesis of benzofuran and indole derivatives.

Substances (3)

Related products
Procduct Name CAS Molecular Formula Supplier Price
Palladium 7440-05-3 Pd 620 suppliers $17.70-$8840.00
2-Aminobenzenethiol 137-07-5 C6H7NS 356 suppliers $10.00-$3418.80
HEMATIN 15489-90-4 C34H31FeN4O5- 144 suppliers $41.00-$11819.00

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