Sodium triacetoxyborohydride → 6-(5-((2-(dimethylphosphinoyl)ethylamino)methyl)furan-2-yl)-N-(1-(3-fluorobenzyl)-1H-indazol-5-yl)quinazolin-4-amine

HRID 877111Notes

Reaction equation

HRID 877111 reaction equation
[F:1][C:2]1[CH:3]=[C:4]([CH:33]=[CH:34][CH:35]=1)[CH2:5][N:6]1[C:14]2[C:9](=[CH:10][C:11]([NH:15][C:16]3[C:25]4[C:20](=[CH:21][CH:22]=[C:23]([C:26]5[O:30][C:29]([CH:31]=O)=[CH:28][CH:27]=5)[CH:24]=4)[N:19]=[CH:18][N:17]=3)=[CH:12][CH:13]=2)[CH:8]=[N:7]1.[CH3:36][P:37]([CH3:42])([CH2:39][CH2:40][NH2:41])=[O:38].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCl.C(O)(=O)C>[CH3:36][P:37]([CH3:42])([CH2:39][CH2:40][NH:41][CH2:31][C:29]1[O:30][C:26]([C:23]2[CH:24]=[C:25]3[C:20](=[CH:21][CH:22]=2)[N:19]=[CH:18][N:17]=[C:16]3[NH:15][C:11]2[CH:10]=[C:9]3[C:14](=[CH:13][CH:12]=2)[N:6]([CH2:5][C:4]2[CH:33]=[CH:34][CH:35]=[C:2]([F:1])[CH:3]=2)[N:7]=[CH:8]3)=[CH:27][CH:28]=1)=[O:38]

Participants

6

Reactant 3

HCID 5049666Sodium triacetoxyborohydrideHCID 215271022-(Dimethylphosphinoyl)ethanamine2×HCID 866684795-(4-(1-(3-fluorobenzyl)-1H-indazol-5-ylamino)quinazolin-6-yl)furan-2-carbaldehyde

Product 1

HCID 498564386-(5-((2-(dimethylphosphinoyl)ethylamino)methyl)furan-2-yl)-N-(1-(3-fluorobenzyl)-1H-indazol-5-yl)quinazolin-4-amineYield 43%

Reagents, catalysts & solvents 2

HCID 176Acetic AcidCatalystHCID 6344DichloromethaneSolvent

Procedure

5-(4-(1-(3-fluorobenzyl)-1H-indazol-5-ylamino)quinazolin-6-yl)furan-2-carbaldehyde and 2-(dimethylphosphinoyl)ethanamine (compound 2.2, 82 mg) were suspended in dichloromethane (20 mL). Sequentially, acetic acid (3 drops) and sodium triacetoxyborohydride (237 mg) were added at room temperature. The mixture was stirred at room temperature until the starting material disappeared. The reaction was quenched with 2N NaOH aqueous solution and extracted with dichloromethane. The combined organic layer and extracts were dried over anhydrous magnesium sulfate, filtered and concentrated. The residue was purified by flash chromatography, eluting with 20% methanol in dichloromethane to give the desired product as yellow crystalline solid (138 mg). LCMS ESI(+) m/z: 569 (M+1). Yield: 43%. 1H NMR (300 MHz, CD3OD) δ 8.75 (d, 1H), 8.40 (s, 1H), 8.18 (m, 1H), 8.12 (m, 2H), 7.76 (m, 1H), 7.68 (m, 1H), 7.61 (m, 1H), 7.30 (m, 2H), 7.03 (m, 2H), 6.92 (m, 3H), 6.46 (d, 1H), 5.69 (s, 2H), 3.91 (s, 2H), 2.99 (m, 2H), 2.10 (m, 2H), 1.52 (d, 3H).

Workup

  1. customThe reaction was quenched with 2N NaOH aqueous solution
  2. extractionextracted with dichloromethane
  3. dry with materialThe combined organic layer and extracts were dried over anhydrous magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified by flash chromatography
  7. washeluting with 20% methanol in dichloromethane

Sources & evidence

ORD record
ord-5895aeecb1fb41bab48105478258e9bd
Source dataset
uspto-grants-2015_03
Patent number
US08987284B2

Reaction notes

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