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ES407828A1 - A procedure for the preparation of pirazolic derivatives. (Machine-translation by Google Translate, not legally binding) - Google Patents

A procedure for the preparation of pirazolic derivatives. (Machine-translation by Google Translate, not legally binding)

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Publication number
ES407828A1
ES407828A1 ES407828A ES407828A ES407828A1 ES 407828 A1 ES407828 A1 ES 407828A1 ES 407828 A ES407828 A ES 407828A ES 407828 A ES407828 A ES 407828A ES 407828 A1 ES407828 A1 ES 407828A1
Authority
ES
Spain
Prior art keywords
group
formula
halogen
translation
procedure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES407828A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CH1540471A external-priority patent/CH573918A5/xx
Application filed by F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Publication of ES407828A1 publication Critical patent/ES407828A1/en
Expired legal-status Critical Current

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Abstract

A procedure for the preparation of pyrazole derivatives of the general formula **(See formula)** in which R represents a lower alkyl group (which may be substituted by halogen, hydroxy, lower alkoxy, lower alkoxycarbonyl or carboxyl) or a lower alkenyl group; R1 represents a hydrogen or halogen atom or a lower alkyl or lower alkoxy group; and R2 represents a grouping of the formula **(See formula)** where R3 represents a hydroxy, lower alkanoyloxy, lower alkoxycarbonyloxy or lower alkoxy group (the alkoxy group may optionally be substituted by halogen or lower alkoxy) or a phenylcarbonyloxy, phenyl- (lower alkylcarbonyloxy) group, phenyl- (lower alkenylcarbonyloxy)), pyridyl- (lower alkylcarbonyloxy) or pyridylcarbonyloxy (phonyl radicals and pyridyl radicals may, optionally, be substituted by lower alkyl, lower alkoxy or halogen), characterized by reacting a nitro-pyrazole of the general formula **(See formula)** where R and have the same meaning as in formula I, while R7 means a group (see formula), and R6 represents a lower alkyl group, with hydroxylamine, to form an amidoxime of the general formula (see formula) (Machine-translation by Google Translate, not legally binding)
ES407828A 1971-10-22 1972-10-21 A procedure for the preparation of pirazolic derivatives. (Machine-translation by Google Translate, not legally binding) Expired ES407828A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1540471A CH573918A5 (en) 1971-10-22 1971-10-22
CH1332772 1972-09-12

Publications (1)

Publication Number Publication Date
ES407828A1 true ES407828A1 (en) 1976-02-01

Family

ID=25712042

Family Applications (1)

Application Number Title Priority Date Filing Date
ES407828A Expired ES407828A1 (en) 1971-10-22 1972-10-21 A procedure for the preparation of pirazolic derivatives. (Machine-translation by Google Translate, not legally binding)

Country Status (1)

Country Link
ES (1) ES407828A1 (en)

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