Synthesis of 3,6-dialkyl-5,6-dihydro-4-hydroxy-2h-pyran-2-one

Details Synthesis of 3,6-dialkyl-5,6-dihydro-4-hydroxy-2h-pyran-2-one Synthesis of 3,6-dialkyl-5,6-dihydro-4-hydroxy-2h-pyran-2-one

C - Chemistry, Metallurgy

07

D

C07D 309/32 (2006.01) C07C 67/31 (2006.01) C07C 69/675 (2006.01) C07D 305/12 (2006.01) C07F 7/18 (2006.01)

Patent

CA 2333192

The present invention relates to a novel process for producing a .delta.- lactone of the formula: (see formula I) using an acyl halide of the formula: (see formula II) wherein R1, R2, R3 and X are described herein, as well as novel intermediates. In particular, the present invention relates to a process for enantioselectively producing the .delta.-lactone.

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