DE198713C - - Google Patents

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Publication number
DE198713C
DE198713C DENDAT198713D DE198713DA DE198713C DE 198713 C DE198713 C DE 198713C DE NDAT198713 D DENDAT198713 D DE NDAT198713D DE 198713D A DE198713D A DE 198713DA DE 198713 C DE198713 C DE 198713C
Authority
DE
Germany
Prior art keywords
carboxylic acid
mixture
phenylthioglycol
heating
short time
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.)
Active
Application number
DENDAT198713D
Other languages
German (de)
Publication of DE198713C publication Critical patent/DE198713C/de
Active legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D333/00Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
    • C07D333/50Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
    • C07D333/52Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes
    • C07D333/62Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the hetero ring
    • C07D333/68Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
    • C07D333/70Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 2
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D333/00Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
    • C07D333/50Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
    • C07D333/52Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes
    • C07D333/62Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the hetero ring
    • C07D333/64Oxygen atoms

Description

BERLIN. GEDRUCKT IN DER REICHSDRUCKEREI.BERLIN. PRINTED IN THE REICHSDRUCKEREI.

Claims (1)

/7/ 7 PATENTAMT.PATENT OFFICE. PATENTSCHRIFTPATENT LETTERING - JVl 198713 -KLASSE 12o. GRUPPE - JVl 198713 - CLASS 12o. GROUP Zusatz zum Zusatz-Patente 196016 vom 19. Oktober 1905.Addendum to additional patents 196016 from October 19, 1905. Patentiert im Deutschen Reiche vom 18. Januar 1906 ab. Längste Dauer: 8. Mai 1920.Patented in the German Empire on January 18, 1906. Longest duration: May 8, 1920. Das Patent 196016, Zusatz zum Patent 192075, betrifft ein Verfahren zur Darstellung der 3- Oxy(i)thionaphten-2-carbonsäure, gekennzeichnet durch Erhitzen eines pulverigen Gemisches von Phenylthioglykol-o -carbonsäure mit Ätzalkali.The patent 196016, addition to the patent 192075, relates to a process for the preparation of 3-oxy (i) thionaphthene-2-carboxylic acid, characterized by heating a powdery mixture of phenylthioglycol-o -carboxylic acid with caustic alkali. Es wurde nun gefunden, daß bei dem Verfahren das Erhitzen auch in der Weise vorgenommen werden kann, daß man in das pulverige Gemisch von Phenylthioglykol-ocarbonsäure oder eines ihrer Salze und Ätzalkali für ganz kurze Zeit — es genügen Bruchteile einer Minute — Wasserdampf einleitet. It has now been found that in the process the heating is also carried out in this way can be that one in the powdery mixture of phenylthioglycol-ocarboxylic acid or one of its salts and caustic alkali for a very short time - fractions of a minute are sufficient - introduces steam. Das Gemisch erwärmt sich dadurch zuerst örtlich, die Temperatur steigt von selbst und setzt sich durch die ganze Masse derart fort, daß die Kondensation zu der Oxythionaphtencarbonsäure ganz zu Ende geht. Das Rer aktionsprodukt behält dabei seine pulverige bzw. trockene Beschaffenheit.The mixture first warms up locally, the temperature rises by itself and continues through the whole mass in such a way that the condensation to the oxythionaphtenecarboxylic acid comes to an end. The promotional product retains its powdery or dry texture. 2525th Beispiel. Man mischt 20kg Phenylthioglykol-o-carbonsäure mit 16 kg trockenem gepulvertem Ätznatron in einem Kessel und leitet auf kurze Zeit Wasserdampf ein. Die Reaktionsmasse erwärmt sich dann von selbst weiter, die Temperatur steigt auf i8o° und darüber. Man hält nun bei dieser Temperatur noch kurze Zeit, bis keine Reaktion mehr wahrnehmbar ist.Example. Mix 20kg of phenylthioglycol-o-carboxylic acid with 16 kg of dry powdered caustic soda in a kettle and conducts on steam for a short time. The reaction mass then continues to heat up by itself, the temperature rises to 180 ° and above. It is now held at this temperature for a short time Time until no more reaction is perceptible. Pate ν τ-An Spruch :Godfather ν τ-An saying: Eine Ausführungsform des durch Patent 196016, Zusatz zum Patent 192075, geschützten Verfahrens zur Darstellung der 3-Oxy(i)thionaphten-2-carbonsäure durch Erhitzen eines pulverigen Gemisches von Phenylthioglykol-o-carbonsäure oder eines ihrer Alkalisalze und Ätzalkali, dadurch gekennzeichnet, das man das Erhitzen des Gemisches hier durch kurzes Einleiten von Wasserdampf in das Gemisch bewerkstelligt.An embodiment of the patent 196016, addition to patent 192075, Protected process for the preparation of 3-oxy (i) thionaphten-2-carboxylic acid by heating a powdery mixture of phenylthioglycol-o-carboxylic acid or one of their alkali salts and caustic alkali, characterized in that one is heating the mixture accomplished here by briefly introducing steam into the mixture.
DENDAT198713D Active DE198713C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE198712T

Publications (1)

Publication Number Publication Date
DE198713C true DE198713C (en)

Family

ID=33035719

Family Applications (5)

Application Number Title Priority Date Filing Date
DENDAT198713D Active DE198713C (en)
DE1905192075D Expired - Lifetime DE192075C (en) 1905-05-08 1905-05-08
DE1905198712D Expired - Lifetime DE198712C (en) 1905-08-09 1905-08-09
DE1905196016D Expired - Lifetime DE196016C (en) 1905-10-18 1905-10-18
DE1906232277D Expired - Lifetime DE232277C (en) 1906-11-29 1906-11-29

Family Applications After (4)

Application Number Title Priority Date Filing Date
DE1905192075D Expired - Lifetime DE192075C (en) 1905-05-08 1905-05-08
DE1905198712D Expired - Lifetime DE198712C (en) 1905-08-09 1905-08-09
DE1905196016D Expired - Lifetime DE196016C (en) 1905-10-18 1905-10-18
DE1906232277D Expired - Lifetime DE232277C (en) 1906-11-29 1906-11-29

Country Status (1)

Country Link
DE (5) DE192075C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040016046A1 (en) * 2002-07-26 2004-01-29 Siegal David M. Push-on bolt stabilizer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040016046A1 (en) * 2002-07-26 2004-01-29 Siegal David M. Push-on bolt stabilizer

Also Published As

Publication number Publication date
DE232277C (en)
DE196016C (en)
DE198712C (en)
DE192075C (en)

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