Process for the preparation of enantiomers of...

Details Process for the preparation of enantiomers of... Process for the preparation of enantiomers of...

2005-11-07

2009-02-03

Shiao, Rei-Tsang (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C514S622000

Reexamination Certificate

active

07485751

ABSTRACT:
The invention is directed at a new process for the preparation of pure enantiomers from the racemate of amidoacetonitrile compounds of formulawhereinR1, R2and R3, independently of each other, signify hydrogen, halogen, nitro, cyano, C1-C6-alkyl, halogen-C1-C6-alkyl, C1-C6-alkoxy, halogen-C1-C6-alkoxy, C2-C6-alkenyl, halogen-C2-C6-alkenyl, C2-C6-alkinyl, halogen-C2-C6-alkinyl, C2-C6-alkenyloxy, halogen-C2-C6-alkenyloxy, C1-C6-alkylthio, halogen-C1-C6-alkylthio, C1-C6-alkylsulfonyloxy, halogen-C1-C6-alkylsulfonyloxy, C1-C6-alkylsulfinyl, halogen-C1-C6-alkylsulfinyl, C1-C6-alkylsulfonyl, halogen-C1-C6-alkylsulfonyl, C1-C6-alkenylthio, halogen-C1-C6-alkenylthio, C1-C6-alkenylsulfinyl, halogen-C1-C6-alkenylsulfinyl, C1-C6-alkenylsulfonyl, halogen-C1-C6-alkenylsulfonyl, C1-C6-alkylamino, di-(C1-C6-alkyl)amino, C1-C6-alkylaminocarbonyl, di-(C1-C6-alkyl)aminocarbonyl, C1-C6-alkylsulfonylamino, halogen-C1-C6-alkylsulfonylamino, C1-C6-alkylcarbonyl, halogen-C1-C6-alkylcarbonyl, C1-C6-alkoxycarbonyl, unsubstituted or one- to five-fold substituted phenyl, unsubstituted or one- to five-fold substituted phenoxy, unsubstituted or one- to five-fold substituted phenylacetylenyl, unsubstituted or one- to four-fold substituted pyridyloxy, unsubstituted or one- to four-fold substituted pyridyl or unsubstituted or one- to seven-fold substituted naphthyl, the substituents in each case being selected from the group consisting of halogen, nitro, cyano, C1-C6-alkyl, halogen-C1-C6-alkyl, C1-C6-alkoxy and halogen-C1-C6-alkoxy,which are useful in the control of endo- and ectoparasites in and on warm-blooded animals, especially productive livestock and domestic animals, as well as on plants.

REFERENCES:
patent: 3401178 (1968-09-01), Firestone et al.
patent: 6239077 (2001-05-01), Andoh et al.
patent: 2007/0072944 (2007-03-01), Gauvry et al.

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