FR2154857A5 - Deuterated nitroxide radical - tetra methyl 2,2,5,5-aza -1-cyclopentane oxa-3-oxyl-1 - Google Patents

Deuterated nitroxide radical - tetra methyl 2,2,5,5-aza -1-cyclopentane oxa-3-oxyl-1

Info

Publication number
FR2154857A5
FR2154857A5 FR7134802A FR7134802A FR2154857A5 FR 2154857 A5 FR2154857 A5 FR 2154857A5 FR 7134802 A FR7134802 A FR 7134802A FR 7134802 A FR7134802 A FR 7134802A FR 2154857 A5 FR2154857 A5 FR 2154857A5
Authority
FR
France
Prior art keywords
deuterated
oxyl
aza
oxa
cyclopentane
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
FR7134802A
Other languages
French (fr)
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to FR7134802A priority Critical patent/FR2154857A5/en
Application granted granted Critical
Publication of FR2154857A5 publication Critical patent/FR2154857A5/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
    • C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
    • C07D233/66—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D233/72—Two oxygen atoms, e.g. hydantoin

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A deuterated nitroxide radical consists of tetramethyl 2,2,5,5-aza-1 cyclopentane oxa-3- oxyl-1. This is prepd. by hydrolysis of deuterated hydantoin (dimethyl-5,5 hydantoin) to alpha-aminoisobutyric acid and then esterified to the methyl ester chlorhydrate which is reduced with LiAlD4 to the deuterated amine alcohol (alpha-amino-2-methylpropanol) and condensed with deuterated acetone (mole ratio 1:1) to give the oxazolidine (tetramethyl 2,2,5,5-oxazolidine) followed by oxidn. The radical has pronounced affinity for magnetic rays and is used in magnetometry.
FR7134802A 1971-09-28 1971-09-28 Deuterated nitroxide radical - tetra methyl 2,2,5,5-aza -1-cyclopentane oxa-3-oxyl-1 Expired FR2154857A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7134802A FR2154857A5 (en) 1971-09-28 1971-09-28 Deuterated nitroxide radical - tetra methyl 2,2,5,5-aza -1-cyclopentane oxa-3-oxyl-1

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7134802A FR2154857A5 (en) 1971-09-28 1971-09-28 Deuterated nitroxide radical - tetra methyl 2,2,5,5-aza -1-cyclopentane oxa-3-oxyl-1

Publications (1)

Publication Number Publication Date
FR2154857A5 true FR2154857A5 (en) 1973-05-18

Family

ID=9083569

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7134802A Expired FR2154857A5 (en) 1971-09-28 1971-09-28 Deuterated nitroxide radical - tetra methyl 2,2,5,5-aza -1-cyclopentane oxa-3-oxyl-1

Country Status (1)

Country Link
FR (1) FR2154857A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0351919A1 (en) * 1988-07-19 1990-01-24 Hafslund Nycomed Innovation AB Stable free radical-containing contrast media

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0351919A1 (en) * 1988-07-19 1990-01-24 Hafslund Nycomed Innovation AB Stable free radical-containing contrast media
WO1990000904A1 (en) * 1988-07-19 1990-02-08 Cockbain, Julian, Roderick, Michaelson Stable free radical containing contrast media
US5322065A (en) * 1988-07-19 1994-06-21 Nycomed Innovation Ab Stable free radical containing contrast media

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Legal Events

Date Code Title Description
ST Notification of lapse