C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/478.1, 260/5
C07C 69/734 (2006.01) C07C 255/13 (2006.01) C07C 255/14 (2006.01) C07D 317/30 (2006.01) C07D 319/06 (2006.01) C07D 319/08 (2006.01) C07F 7/08 (2006.01)
Patent
CA 2005993
- 42 - ABSTRACT OF THE DISCLOSURE A compound of a 3,5,6-trihydroxyhexanoic acid derivative of the formula: Image (I) wherein P1 and P2 are independently hydrogen atoms or hydroxy-protecting groups, or together form a ring, and R is an alkyl group is effectively prepared by a process compri- sing steps of: reacting a butyronitrile derivative of the formula: Image (II) wherein P1 and P2 are the same as defined above with an .alpha.-haloacetate of the formula: X-CH2-COOR (III) wherein X is a halogen atom, and R is the same as defined above in the presence of a metallic catalyst selected from the group consisting zinc and zinc-copper to form a keto acid derivative of the formulas Image (IV) wherein P1, P2 and R are the same as defined above, and then reducing the obtained keto-acid derivative of the formula (IV).
Inoue Kenji
Takahashi Satomi
Ueyama Noboru
Yonetsu Keiichi
Kanegafuchi Chemical Industry Co. Ltd.
Kirby Eades Gale Baker
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