The Journal of Organic Chemistry

Syntheses of macrocyclic acetals via cyclization of. alpha.,. omega.-diols with an intermediate from diphenyldiazomethane and 2, 3-dichloro-5, 6- …

S Ueno, T Oshima, T Nagai

Index: Ueno, Shinya; Oshima, Takumi; Nagai, Toshikazu Journal of Organic Chemistry, 1984 , vol. 49, # 21 p. 4060 - 4063

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Citation Number: 10

Abstract

Preparation and Storage of the Catalyst. Pdc was prepared from NaH (60 mmol), t-AmOH (20 mmol), and Pd(OAc)z (10 mmol) in THF (50 mL) following the procedure previously re- ported for the preparation of Nic." Addition of t-AmOH was started at 40 "C as it was very important not to exceed 45 "C during either step of the preparation. After 3 h of stirring at 45 "C, the catalyst was ready for use. It was syringed and stored under argon in air-tight bottles in which was ...