C - Chemistry – Metallurgy – 12 – N
Patent
C - Chemistry, Metallurgy
12
N
195/131, 195/33.
C12N 9/18 (2006.01) C07C 69/732 (2006.01) C12P 7/62 (2006.01) C12P 17/04 (2006.01) C12P 41/00 (2006.01)
Patent
CA 2033278
This invention relates to methods for producing optically active hydroxyesters and also to methods For producing and purifying optically active five-membered ring lactones. fore specifically, the invention provides methods for efficiently, safely, and selectively producing and purifying optically active (R)-hydroxyester (shown by formula 1) and optically active (S)-hydroxyester (shown by formula 2) in high state of purity at ordinary temperature. The invention also relates to application of the inter-convertible optically active (R)-five-membered ring lacton (shown by formula 5). They are intermediates for synthesizing various medicines, agricultural chemicals, and biologically active substances, however especially useful for synthesizing pheromone of a noxious insect, Popillia japonica Newman. Image Image (Here, R1 denotes -C ~ C-R3 or -C=C-R3: R2 and R3 denote straight chain or branched alkyl groups containing 1 to 10 carbon atoms; R4 denotes alkyl groups; aralkyl groups, or haloalkyl groups containing 1 to 12 carbon atoms and the end group of R4 may be carboxyl groups; * denotes asymmetricrbon atoms.)
Fukusaki Eiichiro
Hibino Ken
Nakazono Yutaka
Omata Tetsuo
Ota Hiromichi
Kirby Eades Gale Baker
Nitto Denko Co. Ltd.
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