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ES434407A1 - PROCEDURE FOR PREPARING BENZOFURANONE DERIVATIVES. - Google Patents

PROCEDURE FOR PREPARING BENZOFURANONE DERIVATIVES.

Info

Publication number
ES434407A1
ES434407A1 ES434407A ES434407A ES434407A1 ES 434407 A1 ES434407 A1 ES 434407A1 ES 434407 A ES434407 A ES 434407A ES 434407 A ES434407 A ES 434407A ES 434407 A1 ES434407 A1 ES 434407A1
Authority
ES
Spain
Prior art keywords
preparing
procedure
carbon atoms
formula
benzofuranone derivatives
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
ES434407A
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.)
Sandoz AG
Original Assignee
Sandoz 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 CH518374A external-priority patent/CH589639A5/en
Application filed by Sandoz AG filed Critical Sandoz AG
Publication of ES434407A1 publication Critical patent/ES434407A1/en
Expired legal-status Critical Current

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Abstract

Procedure for preparing benzofuranone derivatives of formula I **(See formula)** wherein R1 is alkyl of 1 to 10 carbon atoms, cycloalkyl of 3 to 8 carbon atoms or phenyl, and R2 is hydrogen or alkyl of 1 to 4 carbon atoms, with the proviso that when it is hydrogen, R1 does not mean methyl; characterized in that a compound of formula II is lactonized **(See formula)** where R1 and R2 have the meanings indicated above. (Machine-translation by Google Translate, not legally binding)
ES434407A 1974-02-05 1975-02-03 PROCEDURE FOR PREPARING BENZOFURANONE DERIVATIVES. Expired ES434407A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH155174 1974-02-05
CH518374A CH589639A5 (en) 1974-04-11 1974-04-11 6-Substd 2,3-dihydro-benzofuran-2-one derivs - prepd e.g. by lactonization of ortho -hydroxyphenyl acetic acids
CH1624274 1974-12-06

Publications (1)

Publication Number Publication Date
ES434407A1 true ES434407A1 (en) 1977-03-16

Family

ID=27173065

Family Applications (1)

Application Number Title Priority Date Filing Date
ES434407A Expired ES434407A1 (en) 1974-02-05 1975-02-03 PROCEDURE FOR PREPARING BENZOFURANONE DERIVATIVES.

Country Status (1)

Country Link
ES (1) ES434407A1 (en)

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