O-Phenylenediamine → HCID 11534745, compound

HRID 724719Notes

Reaction equation

HRID 724719 reaction equation
[CH2:1]([O:8][C:9]([NH:11][C@@H:12]([CH2:16][C:17]1[CH:22]=[CH:21][C:20]([CH:23]2[S:27](=[O:29])(=[O:28])[NH:26][C:25](=[O:30])[CH2:24]2)=[C:19]([CH3:31])[CH:18]=1)[C:13]([OH:15])=O)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.F[P-](F)(F)(F)(F)F.[N:39]1(O[P+](N(C)C)(N(C)C)N(C)C)[C:43]2[CH:44]=[CH:45][CH:46]=[CH:47][C:42]=2[N:41]=N1.C1(N)C(N)=CC=CC=1.C(N(CC)C(C)C)(C)C>CN(C)C=O.C(OCC)(=O)C>[NH2:39][C:43]1[CH:44]=[CH:45][CH:46]=[CH:47][C:42]=1[NH:41][C:13](=[O:15])[C@@H:12]([NH:11][C:9](=[O:10])[O:8][CH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1)[CH2:16][C:17]1[CH:22]=[CH:21][C:20]([CH:23]2[S:27](=[O:28])(=[O:29])[NH:26][C:25](=[O:30])[CH2:24]2)=[C:19]([CH3:31])[CH:18]=1

Participants

7

Reactant 4

HCID 7243O-PhenylenediamineHCID 81531DiisopropylethylamineHCID 151348Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphateHCID 11633706HCID 11633706, compound

Product 1

HCID 11534745HCID 11534745, compoundYield 82%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolvent2×HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
0 °C

Procedure

A solution of (2S)-2-[(benzyloxy)carbonyl]amino-3-[4-(1,1-dioxido-3-oxoisothiazolidin-5-yl)-3-methylphenyl]propanoic acid (200 mg, 0.448 mmol) in N,N-dimethylformamide (2.0 mL) was treated with benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (0.218 g, 0.493 mmol). After stirring for 10 minutes at 0° C., a solution of 1,2-benzenediamine (72.7 mg, 0.672 mmol) and N,N-diisopropylethylamine (0.39 mL, 2.24 mmol) in DMF (1.0 mL) was cannulated into the reaction flask. The solution was stirred at 25° C. for 2 h. The solution was diluted with ethyl acetate, washed with saturated aqueous sodium bicarbonate solution and 1.0 M hydrochloric acid solution. The organic phase was dried over sodium sulfate, filtered, and concentrated in vacuo. The crude residue was purified by preparative LCMS to yield the desired product (196 mg, 82%). 1H NMR (400 MHz, CD3OD): δ 7.47 (d, 0.5H), 7.39–7.22 (m, 9H), 7.12 (d, 0.5H), 7.07 (s, 1H), 6.82 (d, 0.5H), 6.71 (d, 0.5H), 5.50 (t, 1H), 5.10 (s, 2H), 4.47 (m, 1H), 3.3 (m, 2H), 3.07 (m, 2H), 2.48 (s, 1.5H), 2.38 (s, 1.5H); MF=C27H28N4O6S; LCMS found for C27H29N4O6S (M+H)+: m/z=537.

Workup

  1. stirringThe solution was stirred at 25° C. for 2 h
  2. washwashed with saturated aqueous sodium bicarbonate solution and 1.0 M hydrochloric acid solution
  3. dry with materialThe organic phase was dried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe crude residue was purified by preparative LCMS

Sources & evidence

ORD record
ord-19f5f03035404887812ca35bd36f5ee0
Source dataset
uspto-grants-2006_11
Patent number
US07141596B2

Reaction notes

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