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US3758544A Expired / Lapsed US ⏱️ 0.0 years remaining

2-hydroxy-2(6{40 -methoxynaphth-2{40 - yl) propionitrile and 5{40 -halo derivatives thereof

Assignee: Roche Palo Alto LLC
•
Filing: 1971-06-10
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Granted: 1973-09-11
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Expires: 1991-06-10
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Abstract

Abstract New compounds, 2-(6''-methoxynaphth-2''-yl)-propylene oxide, 2(6''-methoxynaphth-2''-yl)pro-pionaldoxime, 2-hydroxy-2-(6''methoxynaphth-2''-yl)-propionitrile, 2-(6''-methoxynaphth-2''yl)acrylo-nitrile, 2-(6''-methoxynaphth-2''-yl)acrylic acid, the corresponding 5''-halo compounds and 2-(5''-halo-6''-methoxynaphth2''-yl) propionaldehyde are useful intermediates in producing 2(6''-methoxy-naphth-2''-yl) propionic acid and the corresponding 5''-halo acids from 6-methoxy-2-acetylnaphthalene and the corresponding 5-halo compounds. The 2-propionic acids are antiinflammatory, analgesic, anti-pyretic and anti-pruritic agents. The 2-propionaldehydes, obtained from the 2-acetyl compounds by way of the 2-propylene oxide, can be converted directly to the 2propionic acids by way of the 2-propionaldoximes and the 2propio-nitriles or more directly by Jones oxidation. Alternatively the 2-acrylonitriles, obtained from the 2-acetyl compounds by way of the 2-hydroxy-2-propionitrile, can be converted to the 2-propionic acid by way of the 2-acrylic acid or 2-propionitrile.

Inventors

  • 👤 F Alvarez

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 03:09
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/45; C07C45/46; C07C205/00; C07C205/13; C07C205/20; C07C205/25; C07C205/27; C07C205/35; C07C205/36; C07C205/37; C07C45/56; C07C45/57; C07C45/58; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/066

Claims Analysis

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-09-10 1977-03-12 1977-09-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-09-10 1981-03-12 1981-09-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-09-10 1985-03-12 1985-09-11 $7700.00 Window Closed / Lapsed

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