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ES404874A1 - Procedure for the obtaining of derivatives of the pyridine. (Machine-translation by Google Translate, not legally binding) - Google Patents

Procedure for the obtaining of derivatives of the pyridine. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES404874A1
ES404874A1 ES404874A ES404874A ES404874A1 ES 404874 A1 ES404874 A1 ES 404874A1 ES 404874 A ES404874 A ES 404874A ES 404874 A ES404874 A ES 404874A ES 404874 A1 ES404874 A1 ES 404874A1
Authority
ES
Spain
Prior art keywords
translation
procedure
machine
legally binding
google translate
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
ES404874A
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
Application filed by Sandoz AG filed Critical Sandoz AG
Publication of ES404874A1 publication Critical patent/ES404874A1/en
Expired legal-status Critical Current

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  • Pyridine Compounds (AREA)

Abstract

Procedure for obtaining pyridine derivatives of general formula I, **(See formula)** wherein either R1, R2, and R3 signify hydrogen, or R1 signifies hydrogen, an alkyl, alkenyl, or lower alkynyl radical, R2 signifies chlorine, bromine, fluorine, or a lower alkyl radical, and R3 signifies hydrogen, chlorine, bromine, fluorine, or an alkyl, alkylthio or lower alkoxy radical, or trifluoromethyl, characterized in that a compound of formula IIIa, IIIb or IIIc is cyclized, **(See formula)** wherein R1, R2 and R3 have the meanings indicated above, or a mixture of the compounds of formulas IIIb and IIIc, with polyphosphoric acid, and, if desired, the mixtures of compounds (4aRS, 5SR, 9bSR) and (4aRS, 5SR, 9bRS) in order to isolate one isomer or each of the isomers. (Machine-translation by Google Translate, not legally binding)
ES404874A 1969-12-10 1972-07-14 Procedure for the obtaining of derivatives of the pyridine. (Machine-translation by Google Translate, not legally binding) Expired ES404874A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1837969 1969-12-10

Publications (1)

Publication Number Publication Date
ES404874A1 true ES404874A1 (en) 1976-01-01

Family

ID=4432597

Family Applications (2)

Application Number Title Priority Date Filing Date
ES404874A Expired ES404874A1 (en) 1969-12-10 1972-07-14 Procedure for the obtaining of derivatives of the pyridine. (Machine-translation by Google Translate, not legally binding)
ES404876A Expired ES404876A1 (en) 1969-12-10 1972-07-14 PROCEDURE FOR THE PRODUCTION OF 5-PHENYL-1, 3, 4, 4A, 5,9B-HEXAHYDRO-2H-INDENE (1,2-C) PYRIDINES.

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES404876A Expired ES404876A1 (en) 1969-12-10 1972-07-14 PROCEDURE FOR THE PRODUCTION OF 5-PHENYL-1, 3, 4, 4A, 5,9B-HEXAHYDRO-2H-INDENE (1,2-C) PYRIDINES.

Country Status (1)

Country Link
ES (2) ES404874A1 (en)

Also Published As

Publication number Publication date
ES404876A1 (en) 1976-01-01

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