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2004
C-C bond formation
O 0282
Palladium-Phosphinous Acid-Catalyzed Sonogashira Cross-Coupling Reactions
Water. — A facile and efficient Sonogashira coupling method for the synthesis of
51- 051 in
diarylalkynes (III) (11 examples) that utilizes a palladium-phosphinous acid catalyst in
water and avoids the use of hazardous organic co-solvents is developed. It is noteworthy that nitrile and carbonyl functions are tolerated under the reaction conditions. —
(WOLF*, C.; LEREBOURS, R.; Org. Biomol. Chem. 2 (2004) 15, 2161-2164; Dep.
Chem., Georgetown Univ., Washington, DC 20057, USA; Eng.) — H. Toeppel
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