Patent US5001233A successfully refreshed from Google Patents.
← Back to Patent Explorer
US5001233A Expired / Lapsed US ⏱️ 0.0 years remaining

Synthesis of hydroxylamines using dioxiranes

Assignee: MISSOURI 509 LEWIS HALL COLUMBIA MO 65211 A CORP OF, University of, Curators of
•
Filing: 1989-09-14
•
Granted: 1991-03-19
•
Expires: 2009-09-14
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The subject invention relates to a method of synthesizing hydroxylamines from secondary amines. This method uses a dioxirane compound such as dimethyldioxirane (DMD, which is relatively stable and simple to synthesize), as the oxidizing agent. The reaction proceeds as follows: <IMAGE> This method provides a simple, one-step reaction with high yields. It can be performed in acetone solution, and the transferral of an oxygen atom from dimethyldioxirane to the secondary amine converts the dioxirane into acetone, the solvent, permitting simple workup and purification. This method can be used with a wide variety of secondary amines, including aliphatic, aromatic, cyclic, and heterocyclic secondary amines, to create a corresponding variety of hydroxylamines.

Inventors

  • 👤 Robert W. Murray
  • 👤 Megh Singh

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 11:52
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D207/273; C07D207/277; C07C; C07C239/00; C07C239/08; C07C239/10; C07D211/00; C07D211/92; C07D211/94; C07D263/00; C07D263/52; C07C2601/00; C07C2601/12; C07C2601/14

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 22 words
A method of synthesizing a hydroxylamine of a secondary amine, comprising the step of reacting a secondary amine with a dioxirane compound.
Claim 2
Independent Claim 22 words
A method of synthesizing a hydroxylamine of a secondary amine, comprising the step of reacting a secondary amine with a dioxirane compound.
Claim 3
Dependent Claim 11 words
A method of Claim 1, wherein the dioxirane compound comprises dimethyldioxirane.
Claim 4
Dependent Claim 14 words
A method of Claim 1, wherein the reaction is carried out in acetone solution.
Claim 5
Dependent Claim 14 words
A method of Claim 2, wherein the reaction is carried out in acetone solution.

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) 1994-03-18 1994-09-17 1995-03-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-03-18 1998-09-17 1999-03-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-03-18 2002-09-17 2003-03-19 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag