Bispiperidone precursor of 2-substituted-5-methyl-pyridines

Details Bispiperidone precursor of 2-substituted-5-methyl-pyridines Bispiperidone precursor of 2-substituted-5-methyl-pyridines

1986-12-03

1987-08-18

Schwartz, Richard A.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D21176

Patent

active

046878548

ABSTRACT:
A process for the synthesis of compounds which are known intermediates for the pyridyloxyphenoxy herbicides as well as intermediates used in the process. Propionaldehyde and an acrylic compound, two radily available starting materials, are reacted to form a 2-formylpentanoic compound which is cyclized to a dihydro pyridone which is then oxidized to the 2-hydroxy pyridine. The hydroxypyridine may be halogenated to a 2-halopyridine.

REFERENCES:
patent: 3478034 (1969-11-01), Campbell et al.
Hubert et al., Tetrahedron, vol. 31, pp. 1437-1441 (1975).
E. Moriconi et al. Journal of Organic Chemistry, vol. 36, No. 19, pp. 2841-2849 (1971).
K. Brannock et al., Journal of Organic Chemistry, vol. 26, pp. 625-626 (1961).
N. Firrell et al., J. Chem. Soc., (B) pp. 351-353 (1971).
C. Mannich et al., Chem. Berichte, vol. 74, pp. 1629-1643 (1941).
E. Benzing, Angew. Chem., vol. 71, p. 521 (1959).
K. Brannock et al., Journal of Organic Chemistry, vol. 29, pp. 801-812 (1964).
Abstract of 140th ACS Meeting (1961), Abstract No. 84, K. Brannock, et al.

Affiliated with

Also associated with

Rating

Bispiperidone precursor of 2-substituted-5-methyl-pyridines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bispiperidone precursor of 2-substituted-5-methyl-pyridines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bispiperidone precursor of 2-substituted-5-methyl-pyridines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1118668