A new synthesis of lactones from tertiary alkenylcarbinols by cobaltcatalyzed photocarbonylation under ambient conditions

…, YJ Huang, V Dragojlovic

Index: Chow, Yuan L.; Huang, Yu-Jin; Dragojlovic, Veljko Canadian Journal of Chemistry, 1995 , vol. 73, # 5 p. 740 - 742

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Citation Number: 5

Abstract

In the presence of a Co catalyst, tertiary vinyl-, propenyl-, and allylcarbinols were chelatively cycloadded to carbon monoxide to produce lactones by xanthone-sensitized photoreaction in tetrahydrofuran, under CO at 1 atmosphere and at room temperature. At lower temperatures the isomerization of alkenylcarbinols was suppressed and lactones were obtained with improved selectivity. The photoprocess was facilitated by addition of ...