Tetrahedron letters

Regioselective Pd-catalyzed alkylative lactonizations of 4-hydroxy-2-alkynecarboxylates with organoboronic acids

CH Oh, SJ Park, JH Ryu, AK Gupta

Index: Oh, Chang Ho; Park, Su Jin; Ryu, Jin Hyang; Gupta, Arun Kumar Tetrahedron Letters, 2004 , vol. 45, # 38 p. 7039 - 7042

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Citation Number: 25

Abstract

The palladium-catalyzed addition of aryl-and alkenylboronic acids to 4-hydroxy-2- alkynecarboxylates and in situ lactonization would constitute a novel methodology for the synthesis of various butenolides with an excellent stereoselectivity and a high control of regioselectivity.