Sodium triacetoxyborohydride → 6-Methyl-8-{4-[2-(5-methoxy-1-benzofuran-3-yl)-1-methylethyl)piperazin-1-yl]quinoline

HRID 1178833Notes

Reaction equation

HRID 1178833 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]2[O:10][CH:9]=[C:8]([CH2:11][C:12]([CH3:14])=O)[C:7]=2[CH:15]=1.[CH3:16][C:17]1[CH:18]=[C:19]2[C:24](=[C:25]([N:27]3[CH2:32][CH2:31][NH:30][CH2:29][CH2:28]3)[CH:26]=1)[N:23]=[CH:22][CH:21]=[CH:20]2.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl.C(O)(=O)C>[CH3:16][C:17]1[CH:18]=[C:19]2[C:24](=[C:25]([N:27]3[CH2:28][CH2:29][N:30]([CH:12]([CH3:14])[CH2:11][C:8]4[C:7]5[CH:15]=[C:3]([O:2][CH3:1])[CH:4]=[CH:5][C:6]=5[O:10][CH:9]=4)[CH2:31][CH2:32]3)[CH:26]=1)[N:23]=[CH:22][CH:21]=[CH:20]2

Participants

6

Reactant 3

HCID 5049666Sodium triacetoxyborohydrideHCID 156187201-(5-Methoxy-1-benzofuran-3-yl)propan-2-oneHCID 207011566-Methyl-8-(piperazin-1-yl)quinoline

Product 1

HCID 114641616-Methyl-8-{4-[2-(5-methoxy-1-benzofuran-3-yl)-1-methylethyl)piperazin-1-yl]quinoline

Reagents, catalysts & solvents 2

HCID 111,2-DichloroethaneSolventHCID 176Acetic AcidSolvent

Procedure

6-methyl-8-{4-[2-(5-methoxy-1-benzofuran-3-yl)-1-methylethyl)piperazin-1-yl]quinoline was prepared by generally following the procedure outlined in example 38, step 2, starting from the 1-(5-methoxy-1-benzofuran-3-yl)acetone (204 mg, 1 mmol) and 6-methyl-8-piperazino quinoline (227.0 mg, 1 mmol) in 1,2-dichloroethane (100 ml) and acetic acid (1 ml), sodium triacetoxyborohydride (422 mg, 2 mmol). The product was purified by silica-gel column chromatography by eluting it initially with 80% ethyl acetate:hexane and then with 5% methanol:ethyl acetate, yielding a yellow oil. Yield: 62 mg (14%); (M+H): 416; 1HNMR (400 MHz, CDCl3): δ□8.82˜8.81 (dd, J1=1.8 Hz, J2=1.8 Hz, 1H): 8.02˜8.00 (dd, J1=1.8 Hz, J2=1.8 Hz, 1H); 7.99˜6.58 (m, 7H); 3.87 (s, 3H); 3.46˜2.62(m, 11H); 2.5 (s, 3H); 1.15˜1.13 (d, J=6.0 Hz, 3H).

Workup

  1. customThe product was purified by silica-gel column chromatography
  2. washby eluting it initially with 80% ethyl acetate
  3. customhexane and then with 5% methanol:ethyl acetate, yielding a yellow oil

Sources & evidence

ORD record
ord-12bb995ae7f04d02a22d8f70938e7828
Source dataset
uspto-grants-2007_10
Patent number
US07276603B2

Reaction notes

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