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2-Aminothiazole → 2-(10-methyl-5,5-dioxo-5,10-dihydrophenothiazin-2-yl)-3-(tetrahydropyran-4-yl)-N-thiazol-2-ylpropionamide

HRID 14989
Notes
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Reaction equation

HRID 14989 reaction equation
[CH3:1][N:2]1[C:15]2[CH:14]=[C:13]([CH:16]([CH2:20][CH:21]3[CH2:26][CH2:25][O:24][CH2:23][CH2:22]3)[C:17](O)=[O:18])[CH:12]=[CH:11][C:10]=2[S:9](=[O:28])(=[O:27])[C:8]2[C:3]1=[CH:4][CH:5]=[CH:6][CH:7]=2.[NH2:29][C:30]1[S:31][CH:32]=[CH:33][N:34]=1.C(N(CC)C(C)C)(C)C.[B-](F)(F)(F)F.CCOC(C(C#N)=NOC(N(C)C)=[N+](C)C)=O>CN(C)C=O.C(OCC)(=O)C>[CH3:1][N:2]1[C:15]2[CH:14]=[C:13]([CH:16]([CH2:20][CH:21]3[CH2:26][CH2:25][O:24][CH2:23][CH2:22]3)[C:17]([NH:29][C:30]3[S:31][CH:32]=[CH:33][N:34]=3)=[O:18])[CH:12]=[CH:11][C:10]=2[S:9](=[O:28])(=[O:27])[C:8]2[C:3]1=[CH:4][CH:5]=[CH:6][CH:7]=2
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 4

HCID 21552-AminothiazoleHCID 81531DiisopropylethylamineHCID 2733286O-[(Ethoxycarbonyl)cyanomethylenamino]-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 580242342-(10-Methyl-5,5-dioxo-5,10-dihydrophenothiazin-2-yl)-3-(tetrahydropyran-4-yl)propionic acid

Product 1

HCID 25009101
2-(10-methyl-5,5-dioxo-5,10-dihydrophenothiazin-2-yl)-3-(tetrahydropyran-4-yl)-N-thiazol-2-ylpropionamide

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

200 mg of 2-(10-methyl-5,5-dioxo-5,10-dihydrophenothiazin-2-yl)-3-(tetrahydropyran-4-yl)propionic acid, 74.8 mg of commercially available 2-aminothiazole and 220 μl of N,N-diisopropylethylamine are dissolved in 10 ml of dimethylformamide. 212 mg of TOTU are added, and the mixture is stirred at room temperature overnight. The reaction mixture is then diluted by addition of 50 ml of ethyl acetate and washed five times with in each case 30 ml of saturated sodium bicarbonate solution. The organic phase is dried over MgSO4, and the solvent is then removed under reduced pressure. The residue is purified by RP-HPLC. This gives 141 mg of 2-(10-methyl-5,5-dioxo-5,10-dihydrophenothiazin-2-yl)-3-(tetrahydropyran-4-yl)-N-thiazol-2-ylpropionamide as a colorless lyophilisate.

Workup

  1. washwashed five times with in each case 30 ml of saturated sodium bicarbonate solution
  2. dry with materialThe organic phase is dried over MgSO4
  3. customthe solvent is then removed under reduced pressure
  4. customThe residue is purified by RP-HPLC

Sources & evidence

ORD record
ord-b0f28dd913ac49b39384885491f565e4
Source dataset
uspto-grants-2010_06
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07732440B2

Reaction notes

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