Preparation of N-substituted pyrazoles

Details Preparation of N-substituted pyrazoles Preparation of N-substituted pyrazoles

1994-11-07

1995-11-21

Ramsuer, Robert W.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D23112

Patent

active

054688710

ABSTRACT:
N-substituted-pyrazoles of the formula ##STR1## wherein R.sup.1 is C.sub.1 -C.sub.12 -alkyl or C.sub.7 -C.sub.20 -alkyl, and R.sup.2, R.sup.3 and R.sup.4 independently denote hydrogen, C.sub.1 -C.sub.12 -alkyl, phenyl, C.sub.7 -C.sub.20 -alkylphenyl and C.sub.7 -C.sub.20 -phenylalkyl, are prepared by reacting a pyrazole of the formula ##STR2## wherein R.sup.2, R.sup.3 and R.sup.4 have the meanings above, with an alcohol or ether of the formula

REFERENCES:
Tanaka et al, Chemical Letters No. 4 (1992), pp. 575-578.
Motoyama et al, Chem. Abstracts, vol. 90, No. 3 (1979), 90:22552s.
Tanaka et al, Chemistry Letters, (1992) pp. 575-578.

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