Acetic Acid → N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(methyl(tetrahydro-2H-pyran-4-yl)amino)benzamide

HRID 2202055Notes

Reaction equation

HRID 2202055 reaction equation
[CH2:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH2:4][CH2:3][N:2]1[CH2:11][CH:12]([OH:30])[CH2:13][NH:14][C:15](=[O:29])[C:16]1[CH:21]=[CH:20][CH:19]=[C:18]([NH:22][CH:23]2[CH2:28][CH2:27][O:26][CH2:25][CH2:24]2)[CH:17]=1.[CH3:31]C(O)=O.C=O.[BH3-]C#N.[Na+]>CO>[CH2:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH2:4][CH2:3][N:2]1[CH2:11][CH:12]([OH:30])[CH2:13][NH:14][C:15](=[O:29])[C:16]1[CH:21]=[CH:20][CH:19]=[C:18]([N:22]([CH3:31])[CH:23]2[CH2:24][CH2:25][O:26][CH2:27][CH2:28]2)[CH:17]=1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 712FormaldehydeHCID 5003444Sodium cyanoborohydrideHCID 76903262N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((tetrahydro-2H-pyran-4-yl)amino)benzamide

Product 1

HCID 76901172N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(methyl(tetrahydro-2H-pyran-4-yl)amino)benzamideYield 33.9%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
20 °C

Procedure

To a solution of N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((tetrahydro-2H-pyran-4-yl)amino)benzamide (300 mg, 0.73 mmol) in MeOH (6 mL) was added AcOH (0.05 mL) and HCHO (548 mg, 7.3 mmol, 40% w/w). The mixture was stirred at 20° C. for 2 h. NaBH3CN (276 mg, 4.38 mmol) was added and the resulting mixture was stirred at 20° C. for 16 h. The reaction solution was concentrated, the residue was washed with water and extracted with EA. The organic layer was concentrated, and the residue was purified by prep-HPLC to give the title compound (105 mg, Yield 33.9%). 1H NMR (CD3OD, 400 MHz): δ 7.37-7.29 (m, 1H), 7.23-7.17 (m, 1H), 7.17-6.97 (m, 6H), 4.18-4.08 (m, 1H), 4.07-3.90 (m, 3H), 3.80-3.68 (m, 2H), 3.62-3.51 (m, 3H), 3.51-3.43 (m, 1H), 2.99-2.79 (m, 7H), 2.75-2.58 (m, 2H), 1.94-1.79 (m, 2H), 1.72-1.59 (m, 2H). LCMS (m/z): 424.1 (M+1).

Workup

  1. stirringthe resulting mixture was stirred at 20° C. for 16 h
  2. concentrationThe reaction solution was concentrated
  3. washthe residue was washed with water
  4. extractionextracted with EA
  5. concentrationThe organic layer was concentrated
  6. customthe residue was purified by prep-HPLC

Sources & evidence

ORD record
ord-933b667fd4d949c4b51133cdb64ed1f8
Source dataset
uspto-grants-2016_06
Patent number
US09365519B2

Reaction notes

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