Sodium Hydroxide → 8-Bromo-1-ethyl-7-methoxy-2,3,4,5-tetrahydro-1H-benzo[d]azepine

HRID 881944Notes

Reaction equation

HRID 881944 reaction equation
FC(F)(F)C([N:5]1[CH2:11][CH:10]([CH2:12][CH3:13])[C:9]2[CH:14]=[C:15]([Br:20])[C:16]([O:18][CH3:19])=[CH:17][C:8]=2[CH2:7][CH2:6]1)=O.[OH-].[Na+]>CO.[Cl-].[Na+].O>[Br:20][C:15]1[C:16]([O:18][CH3:19])=[CH:17][C:8]2[CH2:7][CH2:6][NH:5][CH2:11][CH:10]([CH2:12][CH3:13])[C:9]=2[CH:14]=1

Participants

5

Reactant 2

HCID 14798Sodium HydroxideHCID 22292824N-trifluoroacetyl-8-bromo-1-ethyl-7-methoxy-2,3,4,5tetrahydro-1H-3-benzazepine

Product 1

HCID 99940088-Bromo-1-ethyl-7-methoxy-2,3,4,5-tetrahydro-1H-benzo[d]azepineYield 98%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 57417360Sodium chloride; waterSolvent

Procedure

A solution of N-trifluoroacetyl-8-bromo-1-ethyl-7-methoxy-2,3,4,5-tetrahydro-1H-3-benzazepine (0.561 g, 1.48 mmol) in methanol (30 mL) was treated with 15% aqueous NaOH (30 mL), and stirred overnight at 20 C. The product mixture was diluted with brine (100 mL), extracted twice with EtOAc (200 mL), dried with MgSO4, and concentrated to give 0.412 g of a clear oil. 1H NMR (400 MHz, CD3OD) d 7.24 (s, 1H), 6.76 (s, 1H), 3.83 (s, 3H), 3.02 (m, 3H), 2.91 (s, 1H), 2.85-2.76 (m, 3H), 2.63 (m, 1H), 1.78 (m, 1H), 1.72 (m, 1H), 0.94 (dd, J=8, 8 Hz, 3H). MS calculated for C13H18BrNO+H: 284, observed: 284.

Workup

  1. extractionextracted twice with EtOAc (200 mL)
  2. dry with materialdried with MgSO4
  3. concentrationconcentrated

Sources & evidence

ORD record
ord-ef958a2556a14f9abd2b0bf9831866cb
Source dataset
uspto-grants-2015_03
Patent number
US08993750B2

Reaction notes

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