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Sodium Hydroxide → (11R)-11-(chloromethyl)-10,11-dihydro-8H-[1,4]oxazino[4',3':1,2]imidazo[4,5-c]quinolin-6-amine

HRID 1803400
Notes
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Reaction equation

HRID 1803400 reaction equation
S(Cl)([Cl:3])=O.[NH2:5][C:6]1[C:15]2[N:16]=[C:17]3[CH2:22][O:21][CH2:20][C@H:19]([CH2:23]O)[N:18]3[C:14]=2[C:13]2[C:8](=[CH:9][CH:10]=[CH:11][CH:12]=2)[N:7]=1.[OH-].[Na+]>C(#N)C>[Cl:3][CH2:23][C@@H:19]1[N:18]2[C:14]3[C:13]4[C:8](=[CH:9][CH:10]=[CH:11][CH:12]=4)[N:7]=[C:6]([NH2:5])[C:15]=3[N:16]=[C:17]2[CH2:22][O:21][CH2:20]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 14798Sodium HydroxideHCID 24386Thionyl ChlorideHCID 11623169[(11S)-6-amino-10,11-dihydro-8H-[1,4]oxazino[4',3':1,2]imidazo[4,5-c]quinolin-11-yl]methanol

Product 1

HCID 58406156(11R)-11-(chloromethyl)-10,11-dihydro-8H-[1,4]oxazino[4',3':1,2]imidazo[4,5-c]quinolin-6-amineYield 62.2%

Reagents, catalysts & solvents 1

HCID 6342
Acetonitrile
Solvent

Conditions

Temperature
70 °C

Procedure

Thionyl chloride (1.5 mL, 20.7 mmol) was added neat to [(11S)-6-amino-10,11-dihydro-8H-[1,4]oxazino[4′,3′:1,2]imidazo[4,5-c]quinolin-11-yl]methanol (280 mg, 1.03 mmol). The nearly homogeneous yellow reaction mixture was heated to 70° C. for 2 hours and turned dark red. The reaction mixture was cooled to ambient temperature and poured over ice. While maintaining the temperature at 0° C., the pH of the mixture was brought to 14 with 50% aqueous NaOH. The resulting white suspension was extracted with CHCl3. The layers were separated and the organic layer was dried over Na2SO4 and concentrated under reduced pressure to provide a tan foam. The tan foam was slurried with acetonitrile and filtered to give 185 mg of (11R)-11-(chloromethyl)-10,11-dihydro-8H-[1,4]oxazino[4′,3′:1,2]imidazo[4,5-c]quinolin-6-amine as a white solid. Part J

Workup

  1. temperatureThe reaction mixture was cooled to ambient temperature
  2. additionpoured over ice
  3. temperatureWhile maintaining the temperature at 0° C.
  4. extractionThe resulting white suspension was extracted with CHCl3
  5. customThe layers were separated
  6. dry with materialthe organic layer was dried over Na2SO4
  7. concentrationconcentrated under reduced pressure
  8. customto provide a tan foam
  9. filtrationfiltered

Sources & evidence

ORD record
ord-24dafb23ab0e49ffbd11dd615132ef77
Source dataset
uspto-grants-2013_01
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08350034B2

Reaction notes

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