Method for the production of trioxime derivatives

Details Method for the production of trioxime derivatives Method for the production of trioxime derivatives

2005-06-14

2005-06-14

Davis, Brian (Department: 1621)

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

Organic compounds

Amino nitrogen containing

C564S254000, C564S255000, C564S256000, C564S262000

Reexamination Certificate

active

06906223

ABSTRACT:
The present invention relates to a process for preparing trioxime derivatives of the formula Iin which the substituents R1and R2are identical or different and each is cyano, alkyl, haloalkyl or cycloalkyl, and R3and R4are identical or different and each is alkyl, haloalkyl, cycloalkyl, alkylcarbonyl or arylalkyl, by the following reaction steps in water without isolation of the intermediates:A) nitrosation of 1,3-diketones of the formula II to give monooximes of the formula III,B) oximation of III with hydroxylamine derivatives of the formula IVin-line-formulae description="In-line Formulae" end="lead"?H2N—OR3′  IVin-line-formulae description="In-line Formulae" end="tail"? in which R3′is hydrogen or a group R3to give bisoximes of the formula V,C) alkylation of V with alkylating agents or acylation of V with acylating agents to give compounds of the formula VI andD) subsequent oximation of VI with hydroxylamine to give compounds of the formula I.

REFERENCES:
patent: 5948932 (1999-09-01), Grote et al.
patent: 00/18726 (2000-04-01), None
XP-002183768, Method. der Org. Chem., 4thed. vol. ES, p 780-781 (1985).
Rev.Acad,Cuebc,Exatas,Bd.31,S.91-100 (1976) Alduan et al.
Bull.Acad.Sci.USSR.En,Bd.28,S.121-128 (1979) Mishchenko et al.
Ind.J.Chem.Bd,30B,S.749-753 (1991),Fadda.
XP-001022657, Gazz. Chim. Ital., vol. 22, p. 289-301 (1922).
Methoden der Org. Chem.Bd.10/4,77ff,55ff,217ff. (1979).
Gazz. Chim.Ital,Bd.22 S289ff.1922,Ponzio et al.

Affiliated with

Also associated with

Rating

Method for the production of trioxime derivatives does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for the production of trioxime derivatives, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the production of trioxime derivatives will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3474732