Novel nickel catalyzed conversion of 2-bromo-1-phenyl-1,3-butadiene to an α keto lactone. An example of double carbonylation of a halodiene
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Abstract Nickel cyanide and phase transfer catalyzed carbonylation of 2-bromo-1-phenyl-1,3-butadiene affords an methylene-α-keto lactone in good yield; isomerization to a ketobutenolide occurs on silica gel.
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