Sodium triacetoxyborohydride → 1-({4-[2-(4-methyl-1-oxo-1,3-dihydro-2-benzofuran-5-yl)ethyl]piperazin-1-yl}methyl)-5-(methyloxy)-3,4-dihydro-1H-isochromene-6-carbonitrile

HRID 1187144Notes

Reaction equation

HRID 1187144 reaction equation
[CH3:1][O:2][C:3]1[C:12]([C:13]#[N:14])=[CH:11][CH:10]=[C:9]2[C:4]=1[CH2:5][CH2:6][O:7][CH:8]2[CH2:15][N:16]1[CH2:21][CH2:20][NH:19][CH2:18][CH2:17]1.[CH3:22][C:23]1[C:31]2[CH2:30][O:29][C:28](=[O:32])[C:27]=2[CH:26]=[CH:25][C:24]=1[CH2:33][CH:34]=O.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+]>C(Cl)Cl>[CH3:22][C:23]1[C:31]2[CH2:30][O:29][C:28](=[O:32])[C:27]=2[CH:26]=[CH:25][C:24]=1[CH2:33][CH2:34][N:19]1[CH2:20][CH2:21][N:16]([CH2:15][CH:8]2[C:9]3[C:4](=[C:3]([O:2][CH3:1])[C:12]([C:13]#[N:14])=[CH:11][CH:10]=3)[CH2:5][CH2:6][O:7]2)[CH2:17][CH2:18]1

Participants

5

Reactant 3

HCID 5049666Sodium triacetoxyborohydrideHCID 675156135-(methyloxy)-1-(piperazin-1-ylmethyl)-3,4-dihydro-1H-isochromene-6-carbonitrileHCID 772312602-(4-Methyl-1-oxo-1,3-dihydroisobenzofuran-5-yl)acetaldehyde2×

Product 1

HCID 498016271-({4-[2-(4-methyl-1-oxo-1,3-dihydro-2-benzofuran-5-yl)ethyl]piperazin-1-yl}methyl)-5-(methyloxy)-3,4-dihydro-1H-isochromene-6-carbonitrile

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a solution of 5-(methyloxy)-1-(piperazin-1-ylmethyl)-3,4-dihydro-1H-isochromene-6-carbonitrile (0.04 mmol) in 5 mL of DCM was added (4-methyl-1-oxo-1,3-dihydro-2-benzofuran-5-yl)acetaldehyde (from Step B, Intermediate 17, 11 mg, 0.06 mmol) and NaBH(OAc)3 (34 mg, 0.16 mmol), the mixture was stirred at room temperature overnight. The reaction was diluted with DCM and washed with brine. The organic layer was dried over anhydrous Na2SO4 and concentrated. The residue was purified by prep-TLC to give 1-({4-[2-(4-methyl-1-oxo-1,3-dihydro-2-benzofuran-5-yl)ethyl]piperazin-1-yl}methyl)-5-(methyloxy)-3,4-dihydro-1H-isochromene-6-carbonitrile.

Workup

  1. washwashed with brine
  2. dry with materialThe organic layer was dried over anhydrous Na2SO4
  3. concentrationconcentrated
  4. customThe residue was purified by prep-TLC

Sources & evidence

ORD record
ord-3b65ebc36cfb409a91d94a13d6c89273
Source dataset
uspto-grants-2014_03
Patent number
US08673920B2

Reaction notes

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