EP1794144A2 - Procedes de preparation n-(arylmethyle substitue)-4-methyle piperidines disubstitues et des intermediaires de ceux-ci - Google Patents

Procedes de preparation n-(arylmethyle substitue)-4-methyle piperidines disubstitues et des intermediaires de ceux-ci

Info

Publication number
EP1794144A2
EP1794144A2 EP05798202A EP05798202A EP1794144A2 EP 1794144 A2 EP1794144 A2 EP 1794144A2 EP 05798202 A EP05798202 A EP 05798202A EP 05798202 A EP05798202 A EP 05798202A EP 1794144 A2 EP1794144 A2 EP 1794144A2
Authority
EP
European Patent Office
Prior art keywords
formula
compound
ocf
group
halogen
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
EP05798202A
Other languages
German (de)
English (en)
Inventor
Jaidev Goudar
David S. Rosen
Guozhi Wang
Qun Zhang
Russell Patera
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.)
Bayer CropScience AG
Original Assignee
Bayer CropScience 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 Bayer CropScience AG filed Critical Bayer CropScience AG
Publication of EP1794144A2 publication Critical patent/EP1794144A2/fr
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D213/28—Radicals substituted by singly-bound oxygen or sulphur atoms
    • C07D213/30—Oxygen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
    • C07D401/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a chain containing hetero atoms as chain links

Definitions

  • This invention is in the field of chemical processes; more specifically, processes for preparing intermediates useful in the preparation of N-(substituted arylmethyl)-4-(disubstituted methyl)piperidines.
  • N-(substituted arylmethyl)-4-(disubstituted methyl)piperidines are disclosed in PCT publications 2004/060371 and 2004/060865 as useful insecticides the disclosures of which are incorporated herein by reference.
  • PCT publication 2004/060371 discloses the following general process for synthesizing N-(substituted arylmethyl)-4-(disubstituted methyl)piperidines :
  • Disadvantages of this process include less than optimal yields, less than optimal cycle times and high catalyst loadings.
  • Another disadvantage is the highly exothermic first step of the reaction. This significant exothermic reaction is a result of the presence of Mg and fluorine. Marginally controllable, highly exothermic reactions can affect yields and cycle times as well as require costly equipment.
  • the present invention improves yield, cycle times and catalyst loading as well as reduces the exothermic nature of certain of the reactions involved in producing N- (substituted arylmethyl)-4-(disubstituted methyl)piperidines.
  • the present invention relates to improved processes for preparing intermediates useful in preparing N-(substituted arylmethyl)-4-(disubstituted methyi)piperidines.
  • R 1 is selected from the group consisting of halogen, CF 3 , OCF 3 , OCHF 2 , OCF 2 CHF 2 and SF 5 ;
  • R 1 is as defined above;
  • the reaction can be conducted in a solvent, preferably tetrahydrofuran, dioxane or monoglyme.
  • the alkyl magnesium halide is z-propyl magnesium chloride or /-propyl magnesium bromide.
  • R 1 is selected from the group consisting of halogen, CF 3 , OCF 3 , OCHF 2 , OCF 2 CHF 2 and SF 5 ;
  • the hydrating can be conducted with a metal catalyst; in an alcohol solvent.
  • the metal catalyst is platinum, palladium or rhodium; the alcohol solvent is methanol or ethanol.
  • the elevated pressure is in the range of from 25 pounds per square inch to 200 pounds per square inch.
  • a third embodiment of the present invention is an improved process for preparing a compound of formula F:
  • R 1 is selected from the group consisting of halogen, CF 3 , OCF 3 , OCHF 2 , OCF 2 CHF 2 and SF 5 ;
  • Z and B are independently selected from the group consisting of CH and N;
  • Y is halogen
  • the reaction can be conducted at a temperature in the range of from ambient temperature to 80°C.
  • the solvent is preferably toluene or methyl isobutyl ketone.
  • the phase transfer catalyst can be polyethylene glycol, dimethylaminopyridine, triethylamine,/?-toluenesulfonic acid, phosphorous pentoxide, pyridine or phase transfer catalysts such as quaternary ammonium salts or quaternary phosphonium salts or mixtures thereof.
  • reaction of a compound of formula C and a compound of formula D is conducted in the presence of a sodium borohydride and a solvent selected from the group consisting of 1,2-dichloroethane, dichloromethane, acetonitrile and tetrahydrofuran.
  • a sodium borohydride selected from the group consisting of 1,2-dichloroethane, dichloromethane, acetonitrile and tetrahydrofuran.
  • R 1 and R 2 are independently selected from the group consisting of halogen, CF 3 , OCF 3 , OCHF 2 , OCF 2 CHF 2 and SF 5 ; and Z and B are independently selected from the group consisting of CH and N;
  • R 1 , Z and B are as defined above;
  • R is as defined above;
  • a solvent selected from the group consisting of 1,2- dichloroethane, acetonitrile and dioxane.
  • the condensing can be conducted at a temperature in the range of from 40°C to 80°C.
  • R 1 and R 2 are independently selected from the group consisting of halogen, CF 3 , and OCF 3 ;
  • X is bromine or chlorine;
  • Y is bromine, iodine or chlorine. More preferably, R 1 is CF 3 and R 2 is Cl;
  • X is bromine.
  • Z is N and B is CH.
  • the "about” range shall be not more than 10% of the absolute value of an end point or 10% of the range recited, whichever is less.
  • alkyl As used in this specification and unless otherwise indicated the substituent terms "alkyl”, “alkoxy”, and “haloalkyl”, used alone or as part of a larger moiety, includes straight or branched chains of at least one or two carbon atoms, as appropriate to the substituent, and preferably up to 12 carbon atoms, more preferably up to ten carbon atoms, most preferably up to seven carbon atoms.
  • aryl refers to phenyl or naphthyl optionally substituted with one or more halogen, alkyl, alkoxy, or haloalkyl.
  • Halogen “halide” or “halo” refers to fluorine, bromine, iodine, or chlorine.
  • ambient temperature refers to a temperature in the range of from about 20° C to about 30° C.
  • Certain solvents, catalysts, and the like are known by their acronyms. These include the acronyms “EDC” meaning 1,2- dichloroethane and “THF” meaning tetrahydrofuran.
  • Glymes refers to a class of solvents comprised of monoglyme, diglyme, triglyme, tetraglyme, and polyglyme.
  • R 1 is CF
  • an appropriately substituted phenol for example, the known compound 4-methyl phenol
  • a halopyridine for example 2-chloropyridine
  • potassium carbonate for example potassium carbonate
  • a catalytic amount of copper oxide at a temperature in the range of from 145°C to 170°C
  • D2 2-(4-methylphenoxy)pyridine
  • D2 can then be halogenated with, for example bromine, to form 2-[4- (bromomethyl)phenoxy]pyridine (E).
  • Intermediate (F) can then be condensed with an appropriately substituted aryl halide, for example the known compound 4-chlorobenxenisocyanate (G), at a temperature in the range of from 35°C to 50 0 C to form N-(4-chlorophenyl)( ⁇ l-[(4- (2-pyridyloxy)phenyl)methyl](4-piperidyl) ⁇ [4-
  • an appropriately substituted aryl halide for example the known compound 4-chlorobenxenisocyanate (G)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Hydrogenated Pyridines (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

L'invention concerne des procédés améliorés destinés à préparer des composés de formules (B, C, F, H) dans lesquelles R1, R2, B et Z sont définis. Ces composés sont utiles dans la préparation de N-(arylméthyle substitué)-4-méthyle piperidines disubstitués.
EP05798202A 2004-09-13 2005-09-12 Procedes de preparation n-(arylmethyle substitue)-4-methyle piperidines disubstitues et des intermediaires de ceux-ci Pending EP1794144A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US60953904P 2004-09-13 2004-09-13
PCT/US2005/032473 WO2006031764A2 (fr) 2004-09-13 2005-09-12 Procedes de preparation n-(arylmethyle substitue)-4-methyle piperidines disubstitues et des intermediaires de ceux-ci

Publications (1)

Publication Number Publication Date
EP1794144A2 true EP1794144A2 (fr) 2007-06-13

Family

ID=36060625

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05798202A Pending EP1794144A2 (fr) 2004-09-13 2005-09-12 Procedes de preparation n-(arylmethyle substitue)-4-methyle piperidines disubstitues et des intermediaires de ceux-ci

Country Status (9)

Country Link
EP (1) EP1794144A2 (fr)
JP (1) JP2008512495A (fr)
KR (1) KR20070052319A (fr)
CN (1) CN101018776A (fr)
AR (1) AR052977A1 (fr)
BR (1) BRPI0515275A (fr)
IL (1) IL181102A0 (fr)
TW (1) TW200621747A (fr)
WO (1) WO2006031764A2 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA717147B (en) * 1970-11-27 1972-07-26 Richardson Merrell Inc 4-(4-(alpha-hydroxybenzyl)piperidino)-4'-fluorobutyrophenone derivatives
WO2004060865A2 (fr) * 2002-12-18 2004-07-22 Fmc Corporation Piperidines et piperazines n-(arylmethyle substitues)-4-(methyle disubstitues)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006031764A2 *

Also Published As

Publication number Publication date
AR052977A1 (es) 2007-04-18
KR20070052319A (ko) 2007-05-21
BRPI0515275A (pt) 2008-07-15
TW200621747A (en) 2006-07-01
IL181102A0 (en) 2007-07-04
CN101018776A (zh) 2007-08-15
WO2006031764A2 (fr) 2006-03-23
WO2006031764A3 (fr) 2006-07-13
JP2008512495A (ja) 2008-04-24

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