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公开(公告)号：US3786069A
公开(公告)日：1974-01-15
申请号：US3786069D
申请日：1971-05-04
Applicant: RHONE POULENC SA
Inventor： AVIRON VIOLET P , COLLEUILLE Y
IPC: C07D315/00 , C07D5/06
CPC classification number: C07D315/00
Abstract: 5-ALKYL-Y-BUTYROLACTONES ARE OBTAINED BY ISOMERIZING A LACTONE OF FORMULA
OC
WHERE N=4, 5, 6 OR 7 IN THE PRESENCE OF A SOLID ACIDIC CATALYST. VAPOR OF THE STARTING LACTONE IS CONTACTED WITH THE SOLID CATALYST WHICH EXHIBITS EITHER BRONSTED OR LEWIS ACIDITY E.G. BORON PHOSPHATE OR PHOSPHORIC ACID.
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