Process for production of 5-alkoxy-4-hydroxymethylpyrazole...

Details Process for production of 5-alkoxy-4-hydroxymethylpyrazole... Process for production of 5-alkoxy-4-hydroxymethylpyrazole...

2007-02-08

2010-10-12

Saeed, Kamal A (Department: 1626)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07812175

ABSTRACT:
The present invention relates to a process for producing a 5-alkoxy-4-hydroxymethylpyrazole compound represented by the general formula (3)which comprises reacting a pyrazole compound represented by the general formula (1)(wherein R1is a substituent such as alkyl group, substituted or unsubstituted group or the like, and R2is an electron withdrawing group) with a compound represented by the general formula (2)in-line-formulae description="In-line Formulae" end="lead"?L-R3  (2)in-line-formulae description="In-line Formulae" end="tail"?(wherein L is a leaving group and R3is a substituent such as substituted or unsubstituted alkyl group or the like) in the presence of a base and formaldehyde.

REFERENCES:
patent: 7241794 (2007-07-01), Dunn et al.
patent: 2004/0235926 (2004-11-01), Sakya
patent: 2005/0215797 (2005-09-01), Nakatani et al.
patent: WO 2005/085205 (2005-09-01), None
patent: WO 2005/095352 (2005-10-01), None
patent: WO 2006/123088 (2006-11-01), None

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