Process for preparing pyrazolecarboxylic acid compounds

Details Process for preparing pyrazolecarboxylic acid compounds Process for preparing pyrazolecarboxylic acid compounds

1989-06-16

1991-10-01

Lee, Mary C.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548377, 548378, 546279, C07D40100, C07D23114, C07D 5116

Patent

active

050535170

ABSTRACT:
There is disclosed a process for preparing a pyrazolecarboxylic acid derivative represented by the formula (II): ##STR1## wherein Y and Z each represent a hydrogen atom, a halogen atom, a nitro group, a cyano group, COOR.sub.1, NR.sub.1 R.sub.2, CONR.sub.1 R.sub.2, SR.sub.1, SO.sub.2 NR.sub.1 R.sub.2, SO.sub.2 R.sub.3, R.sub.3 CO, OR.sub.4, CHX.sub.2 or CX.sub.3 ; A represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a substituted or unsubstituted phenyl group, a substituted or unsubstituted pyridyl group or OR.sub.5 ; where R.sub.1 and R.sub.2 each represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms; R.sub.3 represents an alkyl group having 1 to 10 carbon atoms; R.sub.4 represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted phenyl group, CHF.sub.2, CF.sub.3 or CF.sub.3 CH.sub.2 ; R.sub.5 represents an alkyl group having 1 to 10 carbon atoms; and X represents a halogen atom,
which comprises oxidizing a pyrazole compound represented by the formula (I): ##STR2## wherein Y, Z and A have the same meanings as defined above, with an oxygen-containing gas in the presence of a metal compound catalyst.

REFERENCES:
patent: 3692828 (1972-09-01), Onopchenko et al.
patent: 3760009 (1973-09-01), Suzuki
patent: 4623726 (1986-11-01), Daniels
patent: 4794195 (1988-12-01), Hayashi et al.

Affiliated with

Also associated with

Rating

Process for preparing pyrazolecarboxylic acid compounds does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing pyrazolecarboxylic acid compounds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing pyrazolecarboxylic acid compounds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1755876