GB596095A - A process for the manufacture of ª‡, ª‰-(p, p-dihydroxy-diphenyl)-ª‡, ª‰-di-lower alkyl-ethylenes and of ª‡, ª‰-(p, p-dihydroxy-diphenyl)-ª‡, ª‰-di-lower alkyl-ethanes - Google Patents

A process for the manufacture of ª‡, ª‰-(p, p-dihydroxy-diphenyl)-ª‡, ª‰-di-lower alkyl-ethylenes and of ª‡, ª‰-(p, p-dihydroxy-diphenyl)-ª‡, ª‰-di-lower alkyl-ethanes

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Publication number
GB596095A
GB596095A GB1843345A GB1843345A GB596095A GB 596095 A GB596095 A GB 596095A GB 1843345 A GB1843345 A GB 1843345A GB 1843345 A GB1843345 A GB 1843345A GB 596095 A GB596095 A GB 596095A
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GB
United Kingdom
Prior art keywords
pinacoline
alcohol
lower alkyl
dihydroxydiphenyl
treating
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
GB1843345A
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.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche AG
Filing date
Publication date
Application filed by F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Publication of GB596095A publication Critical patent/GB596095A/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/001Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by modification in a side chain
    • C07C37/003Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by modification in a side chain by hydrogenation of an unsaturated part
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/001Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by modification in a side chain
    • C07C37/002Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by modification in a side chain by transformation of a functional group, e.g. oxo, carboxyl
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/11Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
    • C07C37/20Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms using aldehydes or ketones
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/51Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
    • C07C45/52Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition by dehydration and rearrangement involving two hydroxy groups in the same molecule

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Abstract

a : b - (p : p1 - Dihydroxydiphenyl) - a : b - di - lower alkyl ethylenes are obtained by converting a p-hydroxy-phenyl-lower alkyl ketone by treating with sodium amalgam in alkaline medium into the corresponding pinacol, treating the pinacol with a dehydrating agent to obtain the corresponding pinacoline, treating this latter with an alkali metal and an alcohol to obtain the corresponding pinacoline alcohol and reacting the pinacoline alcohol with a dehydrating agent, particularly a mineral acid. a : b - (p : p1 - Dihydroxydiphenyl) - a : b - di - lower alkyl ethanes are obtained (a) by hydrogenating the corresponding ethylenic compound obtained as above; (b) by converting a p-hydroxy-phenyl-lower alkyl ketone as above into the pinacoline alcohol, and treating this with hydrogen iodide, advantageously in conjunction with red phosphorus. In all cases, the expression "lower alkyl" represents an alkyl group containing not more than five carbon atoms. Suitable agents for dehydrating the pinacoline alcohols are halogen hydracids, especially hydrogen chloride or bromide. Both the saturated and unsaturated products are oestrogenic. In examples: (1) p-hydroxypropiophenone, in aqueous caustic soda, is shaken with sodium amalgam and the free pinacol, obtained by adding glacial acetic acid, is treated, in ether, with gaseous hydrogen chloride, the resulting pinacoline being reduced to the corresponding pinacoline alcohol by sodium and alcohol, prior to saturation, in ether, with hydrogen chloride to obtain a : b -(p : p1 - dihydroxydiphenyl) - a : b - diethyl - ethylene; (2) the pinacoline alcohol of (1) is heated in glacial acetic acid with hydriodic acid and red phosphorus to obtain a : b -(p : p1-dihydroxydiphenyl) - a : b - diethylethane; (3) the product of (1) is reduced with hydrogen iodide and red phosphorus in glacial acetic acid to obtain the product of (2).
GB1843345A 1945-07-18 A process for the manufacture of ª‡, ª‰-(p, p-dihydroxy-diphenyl)-ª‡, ª‰-di-lower alkyl-ethylenes and of ª‡, ª‰-(p, p-dihydroxy-diphenyl)-ª‡, ª‰-di-lower alkyl-ethanes Expired GB596095A (en)

Publications (1)

Publication Number Publication Date
GB596095A true GB596095A (en) 1947-12-29

Family

ID=1733911

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1843345A Expired GB596095A (en) 1945-07-18 A process for the manufacture of ª‡, ª‰-(p, p-dihydroxy-diphenyl)-ª‡, ª‰-di-lower alkyl-ethylenes and of ª‡, ª‰-(p, p-dihydroxy-diphenyl)-ª‡, ª‰-di-lower alkyl-ethanes

Country Status (1)

Country Link
GB (1) GB596095A (en)

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