GB312919A - A process for preparing pyridyl alkines and piperidyl alkines - Google Patents

A process for preparing pyridyl alkines and piperidyl alkines

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Publication number
GB312919A
GB312919A GB16551/29A GB1655129A GB312919A GB 312919 A GB312919 A GB 312919A GB 16551/29 A GB16551/29 A GB 16551/29A GB 1655129 A GB1655129 A GB 1655129A GB 312919 A GB312919 A GB 312919A
Authority
GB
United Kingdom
Prior art keywords
pyridine
carbinol
stage
catalyst
group
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
GB16551/29A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB312919A publication Critical patent/GB312919A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
    • C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
    • C07D211/08—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms
    • C07D211/18—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D211/30—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by doubly bound oxygen or sulfur atoms or by two oxygen or sulfur atoms singly bound to the same carbon atom
    • C07D211/32—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by doubly bound oxygen or sulfur atoms or by two oxygen or sulfur atoms singly bound to the same carbon atom by oxygen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
    • C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
    • C07D211/08—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms
    • C07D211/18—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D211/20—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by singly bound oxygen or sulphur atoms
    • C07D211/22—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by singly bound oxygen or sulphur atoms by oxygen atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Plural Heterocyclic Compounds (AREA)

Abstract

312,919. Boehringer, A., (trading as Boehringer Sohn, C. H.). June 1, 1928, [Convention date]. Samples furnished. Pyridine and piperidine alcohols.-Pyridine compounds containing a CH2.CO.R group (R represents hydrogen, alkyl, aralkyl or aryl) in the 2-position or in both 2-and 6-positions are treated with hydrogen in the presence of a hydrogenating catalyst, such as nickel or metals of the platinum group, whereby the carbonyl group or groups is or are reduced to the carbinol stage and then the pyridine nucleus becomes hydrogenated. By choosing the working conditions, the hydrogenation may be stopped at the carbinol stage. According to the example, 2-phenacyl-pyridine (see Specification 311,387) is hydrogenated at ordinary temperature and pressure using a nickel catalyst to give 2-phenylhydroxyethyl-pyridine; on further hydrogenation employing platinum as catalyst, or by using increased pressure and raised temperature with a nickel catalyst, 2- phenylhydroxyethyl-piperidine is produced. The Specification as open to inspection under Sect. 91 (3) (a) also describes the choice of hydrogenation conditions such that only one keto group of the diketo compound becomes reduced to the carbinol stage. This subject-matter does not appear in the Specification as accepted.
GB16551/29A 1928-06-01 1929-05-29 A process for preparing pyridyl alkines and piperidyl alkines Expired GB312919A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE312919X 1928-06-01

Publications (1)

Publication Number Publication Date
GB312919A true GB312919A (en) 1930-08-29

Family

ID=6137609

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16551/29A Expired GB312919A (en) 1928-06-01 1929-05-29 A process for preparing pyridyl alkines and piperidyl alkines

Country Status (1)

Country Link
GB (1) GB312919A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2480329A (en) * 1944-10-19 1949-08-30 William R Warner & Co Inc Preparation of vinyldiacetonalkamine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2480329A (en) * 1944-10-19 1949-08-30 William R Warner & Co Inc Preparation of vinyldiacetonalkamine

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