Patent US4400979A successfully refreshed from Google Patents.
Patent US4156916A successfully refreshed from Google Patents.
Patent US3661974A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3661974A Expired / Lapsed US ⏱️ 0.0 years remaining

2-carbalkoxy-phenyl sulfenamides

Assignee: PMC Inc
•
Filing: 1970-04-27
•
Granted: 1972-05-09
•
Expires: 1990-04-27
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract THE COMPOUNDS DISCLOSED HEREIN ARE BENZENE SULFENAMIDES AND DERIVATIVES THEREOF HAVING THE FORMULA (2-(R''-OOC-),(Y)N-PHENYL)-S-NH-R WHEREIN R IS HYDROGEN, HYDROCARBON OR SUBSTITUTED HYDROCARBON AS DEFINED HEREINAFTER, R'' IS HYDROCARBON OR SUBSTITUTED HYDROCARBON AS DEFINED HEREINAFTER, Y IS AN INERT GROUP, AND N IS AN INTEGER OF 0 TO 2 VALUE. THE PROCESS USED FOR PREPARING THESE COMPOUNDS INVOLES THE STEPS OF HALOGENATING AN ESTER OF 2-MERCAPTOBENZOIC ACID OR A DERIVATIVE THEREOF AND REACTING THE RESULTANT HALOGENATED INTERMEDIATE WITH AMMONIA OR A PRIMARY AMINE CONTAINING THE DESIRED R RADICAL THEREIN. THESE COMPOUNDS ARE USEFUL AS INTERMEDIATES IN THE PREPARATION OF CYCLIZED DERIVATES USEFUL FOR PHARMACEUTICAL PURPOSES.

Inventors

  • 👤 John C Grivas

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 14:44
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/76; C07C; C07C313/00; C07C313/08; C07C313/18; C07C313/24; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/32; C07D239/42; C07D275/00; C07D275/04

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-05-09 1975-11-08 1976-05-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-05-09 1979-11-08 1980-05-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-05-09 1983-11-08 1984-05-09 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag