Dimethylformamide → HCID 87332231, compound

HRID 599141Notes

Reaction equation

HRID 599141 reaction equation
[NH2:1][C:2]1[S:3][C:4]([C:8]2[CH:13]=[CH:12][N:11]=[C:10]([NH:14][C:15]3[CH:20]=[CH:19][CH:18]=[C:17]([N+:21]([O-:23])=[O:22])[CH:16]=3)[N:9]=2)=[C:5]([CH3:7])[N:6]=1.[NH:24]([C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])[CH2:25][CH2:26]C(O)=O.C(N=C=NC(C)C)(C)C.CN(C=[O:50])C>>[C:33]([O:32][C:30](=[O:31])[NH:24][CH2:25][C:26](=[O:50])[NH:1][C:2]1[S:3][C:4]([C:8]2[CH:13]=[CH:12][N:11]=[C:10]([NH:14][C:15]3[CH:20]=[CH:19][CH:18]=[C:17]([N+:21]([O-:23])=[O:22])[CH:16]=3)[N:9]=2)=[C:5]([CH3:7])[N:6]=1)([CH3:36])([CH3:35])[CH3:34]

Participants

5

Reactant 4

HCID 6228DimethylformamideHCID 12734DiisopropylcarbodiimideHCID 76809N-((1,1-dimethylethoxy)carbonyl)-beta-alanineHCID 4479614-(2-Amino-4-methyl-5-thiazolyl)-N-(3-nitrophenyl)-2-pyrimidinamine

Product 1

HCID 87332231HCID 87332231, compound

Procedure

A mixture of [4-(2-amino-4-methyl-thiazol-5-yl)-pyrimidin-2-yl]-(3-nitro-phenyl)-amine (0.12 g, 0.37 mmol), Boc-βAla-OH (0.18 g, 0.93 mmol), 1,3-diisopropylcarbodiimide (0.07 mL, 0.45 mmol) and 4-N,N-dimethylaminopyridine (36 mg, 0.3 mmol) in of dry DMF (2 mL) was stirred at room temperature for 24 h. The reaction mixture was poured into ice water and extracted with EtOAc. The organics were combined and washed with brine, filtered, and dried on MgSO4. The solvent was evaporated to give brown residue, which was purified by SiO2 chromatography (1:1 EtOAc/PE) to afford ({4-Methyl-5-[2-(3-nitro-phenylamino)-pyrimidin-4-yl]-thiazol-2-ylcarbamoyl}-methyl)-carbamic acid tert-butyl ester as light yellow solid. Anal. RP-HPLC: tR=19.5 min (0-60% MeCN in 0.1% aq CF3COOH over 20 min, 1 mL/min, purity >93%). 1H-NMR (DMSO-d6) δ: 1.11 (s, 9H, CH3), 2.54 (s, 3H, CH3), 3.62 (m, 2H, CH2), 5.38 (m, 2H, CH2), 7.06 (d, 1H, J=5.5 Hz, pyrimidinyl-H), 7.46 (m, 1H, Ph-H), 7.72 (m, 1H, Ph-H), 8.15 (m, 1H, Ph-H), 8.45 (d, 1H, J=5.2 Hz, pyrimidinyl-H), 8.77 (s, 1H, NH). A solution of this material (97 mg, 0.19 mmol) in dioxane (5 mL) was treated with CF3COOH (1 ml). After stirring at room temperature for 22 h, the reaction mixture was evaporated and purified by preparative RP-HPLC (0-60% MeCN in 0.1% aq CF3COOH over 40 min, 9 mL/min) to afford the titled compound (34 mg) as a light yellow solid. Anal. RP-HPLC: tR=14.0 min (0-60% MeCN in 0.1% aq CF3COOH over 20 min, 1 mL/min, purity >93%). 1H-NMR (CD3OD) δ: 2.64 (s, 3H, CH3), 3.30 (m, 2H, CH2), 3.33 (m, 2H, CH2), 7.14 (d, 1H, J=5.5 Hz, pyrimidinyl-H), 7.52 (t, 1H, J=8.2 Hz, Ph-H), 7.63 (m, 1H, Ph-H), 7.96 (m, 1H, Ph-H), 8.46 (d, 1H, J=5.5 Hz, pyrimidinyl-H), 8.88 (s, 1H, NH). MS (ESI+) m/z 400.6 (C17H17N7O3S requires 399.4).

Workup

  1. extractionextracted with EtOAc
  2. washwashed with brine
  3. filtrationfiltered
  4. customdried on MgSO4
  5. customThe solvent was evaporated
  6. customto give brown residue, which
  7. customwas purified by SiO2 chromatography (1:1 EtOAc/PE)

Sources & evidence

ORD record
ord-3cfdc1845ca843ed9f190cd69500ac92
Source dataset
uspto-grants-2011_03
Patent number
US07897605B2

Reaction notes

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