THE RING FORMATION OF 1, 7-DIKETONES Ⅲ. KETO-CYCLOL INTERCONVERSION OF 1, 7-DIPHENYLHEPTANDIONE-1, 7
GAO JI-YU(KAO TSI-YU), CHEN WEI-XING, JIANG KUN
Acta Chimica Sinica . 1982, (1): 91 -93 .