DE1174795B - Process for the preparation of the N- (ª ‰ -hydroxy-ethyl) -norgranatane benzilic acid ester - Google Patents

Process for the preparation of the N- (ª ‰ -hydroxy-ethyl) -norgranatane benzilic acid ester

Info

Publication number
DE1174795B
DE1174795B DEB73082A DEB0073082A DE1174795B DE 1174795 B DE1174795 B DE 1174795B DE B73082 A DEB73082 A DE B73082A DE B0073082 A DEB0073082 A DE B0073082A DE 1174795 B DE1174795 B DE 1174795B
Authority
DE
Germany
Prior art keywords
acid ester
preparation
benzilic acid
norgranatane
hydroxyethyl
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.)
Pending
Application number
DEB73082A
Other languages
German (de)
Inventor
Dr Rer Nat Otto Dold
Dr-Ing Kurt Stach
Dr Med Wolfgang Schaumann
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.)
Roche Diagnostics GmbH
Original Assignee
Boehringer Mannheim GmbH
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 Boehringer Mannheim GmbH filed Critical Boehringer Mannheim GmbH
Priority to DEB73082A priority Critical patent/DE1174795B/en
Publication of DE1174795B publication Critical patent/DE1174795B/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D451/00Heterocyclic compounds containing 8-azabicyclo [3.2.1] octane, 9-azabicyclo [3.3.1] nonane, or 3-oxa-9-azatricyclo [3.3.1.0<2,4>] nonane ring systems, e.g. tropane or granatane alkaloids, scopolamine; Cyclic acetals thereof
    • C07D451/14Heterocyclic compounds containing 8-azabicyclo [3.2.1] octane, 9-azabicyclo [3.3.1] nonane, or 3-oxa-9-azatricyclo [3.3.1.0<2,4>] nonane ring systems, e.g. tropane or granatane alkaloids, scopolamine; Cyclic acetals thereof containing 9-azabicyclo [3.3.1] nonane ring systems, e.g. granatane, 2-aza-adamantane; Cyclic acetals thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Herstellung des N-(B-Hydroxyäthyl)-norgranatan-benzilsäureesters Zusatz zur Anmeldung: B 60245 IV d / 12 -Auslegeschrift 1 163 844 Gegenstand der Patentanmeldung B 60245 IVdll2p (deutsche Auslegeschrift 1163 844) ist ein Verfahren zur Herstellung von Estern von N-(Hydroxyalkyl)-nortropanen bzw. -norgranatanen der allgemeinen Formel in der X ein Wasserstoffatom oder die Hydroxylgruppe, Y die Phenylgruppe oder einen Cycloalkylrest, A einen Alkylrest mit mindestens 2Kohlen stoffatomen bedeutet und n die Zahl 2 oder 3 darstellt, und ihren Hydrohalogeniden, das dadurch gekennzeichnet ist, daß man in an sich bekannter Weise N-(Hydroxyalkyl)-nortropane bzw. -norgranatane der Formel oder N-(Halogenalkyl)- bzw. die quartären N,N-Alkylen-nortropane bzw. -norgranatane mit substituierten Phenylessigsäuren der Formel bzw. ihren funktionellen Derivaten umsetzt und die erhaltenen Ester gegebenenfalls mit Halogenwasserstoffsäuren behandelt.Process for the preparation of the N- (B-hydroxyethyl) -norgranatan-benzilic acid ester Addition to the application: B 60245 IV d / 12 -Auslegeschrift 1 163 844 The subject of the patent application B 60245 IVdll2p (German Auslegeschrift 1163 844) is a process for the preparation of esters of N- (hydroxyalkyl) -nortropanes or -norgranatanes of the general formula in which X is a hydrogen atom or the hydroxyl group, Y is the phenyl group or a cycloalkyl group, A is an alkyl group with at least 2 carbon atoms and n is the number 2 or 3, and its hydrohalides, which is characterized in that N is added in a manner known per se - (Hydroxyalkyl) -nortropane or -norgranatane of the formula or N- (haloalkyl) or the quaternary N, N-alkylene-nortropanes or -norgranatanes with substituted phenylacetic acids of the formula or their functional derivatives and the esters obtained are optionally treated with hydrohalic acids.

Als funktionelle Derivate von substituierten Phenylessigsäuren werden dabei die niederen Alkylester oder die Halogenide z.B. der Benzilsäuremethylester oder das I:)iphenylessigsäurechlorid, verwendet. in Abãnderung des Verfahrens zur Herstellung des in , - - Hydroxygr:7yi!- - norgranatan - benzilsäureesters durch Veresterung von N-"1>-'-Hydroxyäthyl)- norgranatan gemäß Patentanmeldung B 60245 IVd/ 12p wurde nun gefunden, daß man den Benzilsäureester des N-(ß-Hydroxyäthyl)-norgranatans auch erhält, wenn man in an sich bekannter Weise N-(ß-Hydroxyäthyl)-norgranatan mit a-Chlordiphenylacetylchlorid umsetzt. Die Reaktion wird unter einfachem Erhitzen der Komponenten in Methylenchlorid durchgeführt. Intermediär entsteht wahrscheinlich zunächst das a-Halogenphenylessigsäure-Derivat, welches unter den Reaktionsbedingungen jedoch sofort verseift wird. As functional derivatives of substituted phenylacetic acids are used the lower alkyl esters or the halides, e.g. methyl benzilate or the I:) iphenylacetic acid chloride is used. in modification of the procedure for Production of the in, - - Hydroxygr: 7yi! - - norgranatan - benzilic acid ester by Esterification of N- "1> -'- hydroxyethyl) - norgranatan according to patent application B 60245 IVd / 12p has now been found that the benzilic acid ester of N- (ß-hydroxyethyl) -norgranatans also obtained when N- (ß-hydroxyethyl) -norgranatan is used in a manner known per se reacted with α-chlorodiphenylacetyl chloride. The reaction occurs with simple heating the components carried out in methylene chloride. Intermediate is likely to arise first the a-halophenylacetic acid derivative, which under the reaction conditions but is saponified immediately.

Im nachstehenden Beispiel ist das erfindungsgemäße Verfahren erläutert. The method according to the invention is explained in the following example.

Beispiel 26,5 g a-Chlordiphenylacetylchlorid, das aus Benzilsäure und Phosphorpentachlorid nach der von J. H. Billmann und P. H. Hidy in dem Journal of the American Chemical Society, Bd. 65 (1943), S.760 und 761, angegebenen Arbeitsweise hergestellt worden ist, werden in 120 ml Methylenchlorid gelöst und unter Rückfluß erhitzt. Es werden 16,9 g N-(ß-Hydroxyäthyl)-norgranatan, in 100 ml Methylenchlorid gelöst, zugetropft, und es wird noch weitere- 3 Stunden am Rückfluß erhitzt. Darauf wird das Lösungsmittel abdestilliert. Der Rückstand wird mit 500 ml Wasser aufgenommen, 5 Minuten zum Sieden erhitzt und die Lösung dann 2 Tage bei Zimmertemperatur stehengelassen. Darauf wird mit festem Kaliumcarbonat basisch gemacht und mehrmals mit Ather extrahiert. Die Atherlösung wird getrocknet, eingeengt und der Rückstand destilliert. Man erhält 8,7 g Benzilsäureester des N-(ß-Hydroxyäthyl)-norgranatans; die Ausbeute beträgt 22,9°/o. Das Hydrochlorid schmilzt bei 201 bis 202°C (umkristallisiert aus Isopropanol). Example 26.5 g of a-chlorodiphenylacetyl chloride, obtained from benzilic acid and phosphorus pentachloride as described by J. H. Billmann and P. H. Hidy in the Journal of the American Chemical Society, 65: 760 and 761 (1943) has been prepared are dissolved in 120 ml of methylene chloride and refluxed heated. There are 16.9 g of N- (ß-hydroxyethyl) -norgranatan in 100 ml of methylene chloride dissolved, added dropwise, and it is heated under reflux for a further 3 hours. Thereon the solvent is distilled off. The residue is taken up with 500 ml of water, Heated to the boil for 5 minutes and then left to stand at room temperature for 2 days. Then it is made basic with solid potassium carbonate and several times extracted with ether. The ether solution is dried, concentrated and the residue distilled. 8.7 g of benzilic acid ester of N- (ß-hydroxyethyl) -norgranatans are obtained; the yield is 22.9%. The hydrochloride melts at 201 to 202 ° C (recrystallized from isopropanol).

Claims (1)

Patentanspruch: Abänderung des Verfahrens zur Herstellung des N-(ß-Hydroxyäthyl)-norgranatan-benzilsäureesters durch Veresterung von N-(Hydroxyäthyl)-norgranatan gemäß Patentanmeldung B 60245 IVd/ 12 p (deutsche Auslegeschrift 1163 844), dadurch g e k e n n z e i c h n e t, daß man in an sich bekannter Weise N-(ß-Hydroxyäthyl)-norgranatan mit a-Chlordipheny acetylchlorid umsetzt. Claim: Modification of the process for the preparation of the N- (ß-hydroxyethyl) -norgranatan-benzilic acid ester by esterification of N- (hydroxyethyl) -norgranatan according to patent application B 60245 IVd / 12 p (German Auslegeschrift 1163 844), thus g e k e n n n z e i c h n e t that in a known manner N- (ß-hydroxyethyl) -norgranatan with α-chlorodipheny acetyl chloride converts. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 657 526. Publications considered: German Patent No. 657 526.
DEB73082A 1962-01-20 1962-01-20 Process for the preparation of the N- (ª ‰ -hydroxy-ethyl) -norgranatane benzilic acid ester Pending DE1174795B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB73082A DE1174795B (en) 1962-01-20 1962-01-20 Process for the preparation of the N- (ª ‰ -hydroxy-ethyl) -norgranatane benzilic acid ester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB73082A DE1174795B (en) 1962-01-20 1962-01-20 Process for the preparation of the N- (ª ‰ -hydroxy-ethyl) -norgranatane benzilic acid ester

Publications (1)

Publication Number Publication Date
DE1174795B true DE1174795B (en) 1964-07-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEB73082A Pending DE1174795B (en) 1962-01-20 1962-01-20 Process for the preparation of the N- (ª ‰ -hydroxy-ethyl) -norgranatane benzilic acid ester

Country Status (1)

Country Link
DE (1) DE1174795B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE657526C (en) * 1936-04-25 1938-03-07 Merck Ag E Process for the preparation of esters of 9-Oxyfluorencarbonsaeure- (9)

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE657526C (en) * 1936-04-25 1938-03-07 Merck Ag E Process for the preparation of esters of 9-Oxyfluorencarbonsaeure- (9)

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