C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/478, 260/368
C07D 305/12 (2006.01) C07C 59/66 (2006.01) C07D 309/00 (2006.01) C07D 309/30 (2006.01) C07D 309/32 (2006.01) C07D 309/38 (2006.01) C07D 405/12 (2006.01)
Patent
CA 2035972
The invention is concerned with a novel process for the manufacture of oxetanones of the formula (see formula I) wherein R1, R2 and X have the significance given in the description, via corresponding .beta.-keto- and .beta.-hydroxy-.delta.-lactones, as well as novel intermediates which occur in this process.
Karpf Martin
Zutter Ulrich
F. Hoffmann-La Roche Ag
Gowling Lafleur Henderson Llp
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