← Back to Patent Explorer
US3702878A Expired / Lapsed US ⏱️ 0.0 years remaining

Cyclic organophosphorus compounds and process for making same

Assignee: Sanko Co Ltd
•
Filing: 1969-12-31
•
Granted: 1972-11-14
•
Expires: 1989-12-31
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract NEW ORGANOPHOSPHORUS COMPOUNDS OF THE GENERAL FORMULAS 2-X,(Y1)M,(Y2)N-DIBENZO(C,E)(1,2)OXAPHOSPHORIN (I) 2,2''-DI(X-),(Y1)P,(Y2)Q-(1,2)BENZOXAPHOSPHORINO(5,4,3-CDE) (1,2)BEMZOXAPHOSPHORINE (II) 2-X,2-(Z=),(Y1)M,(Y2)N-DIBENZO(C,E)(1,2)OXAPHOSPHORIN III 2,2''-DI(X-),2,2''-DI(Z=),(Y1)P,(Y2)Q-(1,2)BENZOXA PHOSPHORINO(5,4,3-CDE)(1,2)BENZOXAPHOSPHORINE (IV) 2-(Z=P(-0H)(-X)-),2''-(HO-),(Y1)M,(Y2)N-BIPHENYL (V) AND 2,6''-DI(Z=P(-0H)(-X)-),2'',6-DI(HO-)-BIPHENYL (VI) WHEREIN X IS HYDROGEN OR HALOGEN OR HYDROXYL AMINO, ALKYL ALKOXY, ALKYLTHIO, OR ARYLTHIO RADICALS; Y1 AND Y2 WHICH MAY OR MAY NOT BE THE SAME ARE HALOGEN OR ALKYL, ARYL, ALKOXY, ARYLOXY ACYL, NITRO, CYANO, OR SULFONIC ACID RADICALS, INCLUDING THE CASE WHERE THE SUBSTITUTED RADICALS Y1 AND Y2 COMBINE WITH A BIPHENYL RING TO FORM A PHENANTHRENE RING; Z IS OXYGEN, SULFUR OR TWO HALOGEN ATOMS; M AND N ARE AN INTEGER RANGING FROM 0 TO 4; AND P AND Q ARE AN INTEGER RANGING FROM 0 TO 3 ARE OBTAINED BY CONDENSATION OF PHOSPHORUS COMPOUNDS AND OLRTHOPHENYLPHENOL DERIVATIVES IN THE PRESENCE OF A CATALYST, WITH THE SUBJECTION, IF DESIRED OF THE PRODUCT TO A KNOWN CHEMICAL PROCEDURE. THE COMPOUNDS THUS OBTAINED ARE USEFUL AS INSECTICIDES, FUNGICIDES, ANTIOXIDANTS FOR HIGHMOLECULAR COMPOUNDS, ETC.

Inventors

  • 👤 Toranosuke Saito

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 12:25
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; A; A01; A01N; A01N57/00; A01N57/36; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/30; C07F9/32; C07F9/3205; C07F9/3229; C07F9/38; C07F9/3804; C07F9/3834; C07F9/48; C07F9/4808; C07F9/4841; C07F9/4891; C07F9/547; C07F9/6564; C07F9/6571; C07F9/657163; C07F9/65719; C08K5/53; C08K5/5313; C08K5/5317; C08K5/5333; C08K5/5357; C08K5/5393

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) 1975-11-14 1976-05-15 1976-11-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-11-14 1980-05-15 1980-11-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-11-14 1984-05-15 1984-11-14 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag