O-Phenylenediamine → HCID 22478729, compound

HRID 2182483Notes

Reaction equation

HRID 2182483 reaction equation
[CH3:1][NH:2][C:3]1[S:4][C:5]2[CH:11]=[CH:10][C:9]([NH:12][CH2:13][C:14]3[CH:22]=[CH:21][C:17]([C:18]([OH:20])=O)=[CH:16][CH:15]=3)=[CH:8][C:6]=2[N:7]=1.[C:23]1([NH2:30])[CH:28]=[CH:27][CH:26]=[CH:25][C:24]=1[NH2:29].F[P-](F)(F)(F)(F)F.N1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=CC=2N=N1.C(N(CC)CC)C>C(#N)C>[NH2:29][C:24]1[CH:25]=[CH:26][CH:27]=[CH:28][C:23]=1[NH:30][C:18](=[O:20])[C:17]1[CH:16]=[CH:15][C:14]([CH2:13][NH:12][C:9]2[CH:10]=[CH:11][C:5]3[S:4][C:3]([NH:2][CH3:1])=[N:7][C:6]=3[CH:8]=2)=[CH:22][CH:21]=1

Participants

6

Reactant 4

HCID 7243O-PhenylenediamineHCID 8471TriethylamineHCID 151348Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphateHCID 22478646HCID 22478646, compound

Product 1

HCID 22478729HCID 22478729, compoundYield 35%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A mixture of acid 456c (729 mg; 2.54 mmol), 1,2-phenylenediamine (376 mg; 3.47 mmol; 1.36 eq) and BOP (1.43 g; 3.23 mmol; 1.27 eq) was dissolved in acetonitrile (15 mL), treated with triethylamine (3 mL) and stirred overnight. The reaction mixture was quenched with methanol, concentrated and purified by chromatographic column on silica gel (40% EtOAc in DCM) and the obtained material crystallized from DCM to give 358 mg (0.88 mmol; 35% yield) of pure compound 456. 1H-NMR (300 MHz; DMSO-d6) δ (ppm): 9.57 (s, 1H), 7.92 (d, J=7.9 Hz, 2H), 7.66 (d, J=4.8 Hz, 1H), 7.48 (d, J=8.3 Hz, 2H), 7.26 (d, J=8.3 Hz, 1H), 7.15 (d, J=7.9 Hz, 1H), 6.95 (t, J=7.5 Hz, 1H), 6.76 4.87 (bs, 2H), 6.58 (t, J=7.5 Hz, 1H), 6.54 (d, J=1.8 Hz, 1H), 6.13 (dd, J=1.8, 8.3 Hz, 1H), 6.27 (t, J=5.7 Hz, 1H), 4.87 (bs, 2H), 4.36 (d, J=5.7 Hz, 2H), 2.85 (d, J=4.8 Hz, 3H). LRMS: calc: 403.5008. found: 404.2(M+NH) and 202.6 (M+2H)/2.

Workup

  1. customThe reaction mixture was quenched with methanol
  2. concentrationconcentrated
  3. custompurified by chromatographic column on silica gel (40% EtOAc in DCM)
  4. customthe obtained material crystallized from DCM

Sources & evidence

ORD record
ord-50dff9edc57e489a909da654d9b37324
Source dataset
uspto-grants-2005_05
Patent number
US06897220B2

Reaction notes

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