| 摘要 |
A PROCESS FOR PREPARING BUTYROLACTONES OF THE GENERAL FORMULA I WHERE THE SUBSTITUENTS RL AND R2 ARE HYDROGEN, ALKYL, HYDROXYALKYL, OR ARYL AND TRIALKYLSILYL GROUPS WHICH MAY HAVE INERT SUBSTITUENTS, COMPRISES REACTING AN ALKYNE OF THE GENERAL FORMULA II WHERE THE SUBSTITUENTS HAVE THE ABOVEMENTIONED MEANINGS, CARBON MONOXIDE CO AND HYDROGEN IN THE PRESENCE OF A TRANSITION METAL CATALYST UNDER ELEVATED PRESSURE.
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