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1,2-Dichloroethane → N-(7'-bromo-4'-fluoro-2'-methoxy-5,6-dihydrospiro[[1,3]oxazine-4,9'-xanthene]-2-yl)-4-nitrobenzamide

HRID 931595
Notes
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Reaction equation

HRID 931595 reaction equation
[NH2:1][C:2]1([CH2:20][CH2:21][OH:22])[C:15]2[CH:14]=[C:13]([O:16][CH3:17])[CH:12]=[C:11]([F:18])[C:10]=2[O:9][C:8]2[C:3]1=[CH:4][C:5]([Br:19])=[CH:6][CH:7]=2.[N+:23]([C:26]1[CH:36]=[CH:35][C:29]([C:30]([N:32]=[C:33]=S)=[O:31])=[CH:28][CH:27]=1)([O-:25])=[O:24].C(Cl)CCl.O>C1COCC1>[Br:19][C:5]1[CH:4]=[C:3]2[C:8]([O:9][C:10]3[C:11]([F:18])=[CH:12][C:13]([O:16][CH3:17])=[CH:14][C:15]=3[C:2]32[CH2:20][CH2:21][O:22][C:33]([NH:32][C:30](=[O:31])[C:29]2[CH:28]=[CH:27][C:26]([N+:23]([O-:25])=[O:24])=[CH:36][CH:35]=2)=[N:1]3)=[CH:7][CH:6]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 111,2-DichloroethaneHCID 962WaterHCID 1413984-Nitrobenzoyl isothiocyanateHCID 673827982-(9-amino-7-bromo-4-fluoro-2-methoxy-9H-xanthen-9-yl)ethanol

Product 1

HCID 67439840N-(7'-bromo-4'-fluoro-2'-methoxy-5,6-dihydrospiro[[1,3]oxazine-4,9'-xanthene]-2-yl)-4-nitrobenzamideYield 56.8%

Reagents, catalysts & solvents

1
HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 2-(9-amino-7-bromo-4-fluoro-2-methoxy-9H-xanthen-9-yl)ethanol (7.17 g, 19.47 mmol) in THF (100 mL) was added 4-nitrobenzoyl isothiocyanate (4.26 g, 20.45 mmol). The reaction mixture was stirred for 30 min at RT. EDC (5.60 g, 29.2 mmol) and TEA (0.543 ml, 3.89 mmol) were added sequentially and the reaction mixture was heated to 70° C. for 1 hr. The reaction mixture was cooled to RT and water (50 ml) was added. The reaction mixture was stirred for 1 hr, upon which a precipitate formed, which was filtered off and washed with water and MeOH. The solid was dried to afford N-(7′-bromo-4′-fluoro-2′-methoxy-5,6-dihydrospiro[[1,3]oxazine-4,9′-xanthene]-2-yl)-4-nitrobenzamide (6.0 g, 11.06 mmol, 56.8% yield).

Workup

  1. temperaturethe reaction mixture was heated to 70° C. for 1 hr
  2. temperatureThe reaction mixture was cooled to RT
  3. stirringThe reaction mixture was stirred for 1 hr, upon which a precipitate
  4. customformed
  5. filtrationwhich was filtered off
  6. washwashed with water and MeOH
  7. customThe solid was dried

Sources & evidence

ORD record
ord-2824dfc552a142cca0ddf8243431f694
Source dataset
uspto-grants-2016_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09296759B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes