Acetic Acid → 1-(4-chlorophenethyl)-5-cyclopropyl-8-methoxy-2,3,5,6-tetrahydrobenzo[b][1,5]diazocin-4(1H)-one

HRID 1614896Notes

Reaction equation

HRID 1614896 reaction equation
[CH:1]1([N:4]2[C:11](=[O:12])[CH2:10][CH2:9][NH:8][C:7]3[CH:13]=[CH:14][C:15]([O:17][CH3:18])=[CH:16][C:6]=3[CH2:5]2)[CH2:3][CH2:2]1.C(O)(=O)C.[Cl:23][C:24]1[CH:29]=[CH:28][C:27]([CH2:30][CH:31]=O)=[CH:26][CH:25]=1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(=O)(O)[O-].[Na+]>ClC(Cl)C>[Cl:23][C:24]1[CH:29]=[CH:28][C:27]([CH2:30][CH2:31][N:8]2[CH2:9][CH2:10][C:11](=[O:12])[N:4]([CH:1]3[CH2:2][CH2:3]3)[CH2:5][C:6]3[CH:16]=[C:15]([O:17][CH3:18])[CH:14]=[CH:13][C:7]2=3)=[CH:26][CH:25]=1

Participants

7

Reactant 5

HCID 176Acetic AcidHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 114125022-(4-Chlorophenyl)acetaldehydeHCID 529398795-cyclopropyl-8-methoxy-2,3,5,6-tetrahydrobenzo[b][1,5]diazocin-4(1H)-one

Product 1

HCID 529398801-(4-chlorophenethyl)-5-cyclopropyl-8-methoxy-2,3,5,6-tetrahydrobenzo[b][1,5]diazocin-4(1H)-oneYield 76%

Reagents, catalysts & solvents 1

HCID 63651,1-DichloroethaneSolvent

Procedure

To a solution of 5-cyclopropyl-8-methoxy-2,3,5,6-tetrahydrobenzo[b][1,5]diazocin-4(1H)-one (50.0 mg, 0.203 mmol) from Example 1 in dichloroethane (2 ml) at 0° C. was added acetic acid (0.035 ml, 0.609 mmol), 2-(4-chlorophenyl)acetaldehyde (47.0 mg, 0.304 mmol) prepared as above and sodium triacetoxyborohydride (129.0 mg, 0.609 mmol). The mixture was stirred overnight at room temperature and then sodium bicarbonate was added followed by extraction with dichloromethane. The organic phases were dried over sodium sulfate, filtered and concentrated. Preparative thin layer chromatography (pentane/ethyl acetate: 1/1) of the obtained residue gave the desired compound as a yellow oil (59 mg, 76%).

Workup

  1. extractionfollowed by extraction with dichloromethane
  2. dry with materialThe organic phases were dried over sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-01ffbf3cc2d84144840891b10a37a4b0
Source dataset
uspto-grants-2014_07
Patent number
US08765728B2

Reaction notes

Loading…