Allyl bromide → N-Trifluoroacetyl-7-allyloxy-8-bromo-1-isopropyl-2,3,4,5-tetrahydro-1H-3-benzazepine

HRID 2389434Notes

Reaction equation

HRID 2389434 reaction equation
[F:1][C:2]([F:22])([F:21])[C:3]([N:5]1[CH2:11][CH:10]([CH:12]([CH3:14])[CH3:13])[C:9]2[CH:15]=[C:16]([Br:20])[C:17]([OH:19])=[CH:18][C:8]=2[CH2:7][CH2:6]1)=[O:4].[CH2:23](Br)[CH:24]=[CH2:25]>ClCCl.Cl>[F:22][C:2]([F:1])([F:21])[C:3]([N:5]1[CH2:11][CH:10]([CH:12]([CH3:14])[CH3:13])[C:9]2[CH:15]=[C:16]([Br:20])[C:17]([O:19][CH2:25][CH:24]=[CH2:23])=[CH:18][C:8]=2[CH2:7][CH2:6]1)=[O:4]

Participants

5

Reactant 2

HCID 7841Allyl bromideHCID 22292823N-Trifluoroacetyl-8-bromo-7-hydroxy-1-isopropyl-2,3,4,5-tetrahydro-1H-3-benzazepine

Product 1

HCID 22292818N-Trifluoroacetyl-7-allyloxy-8-bromo-1-isopropyl-2,3,4,5-tetrahydro-1H-3-benzazepineYield 58.2%

Reagents, catalysts & solvents 2

HCID 313Hydrochloric AcidSolventHCID 6344DichloromethaneSolvent

Procedure

A solution of N-trifluoroacetyl-8-bromo-7-hydroxy-1-isopropyl-2,3,4,5-tetrahydro-1H-3-benzazepine (0.017 g, 0.045 mmol) in dichloromethane (1 mL) was treated with N′″-tert-butyl-N,N, N′, N′, N″, N″-hexamethylphosphorimidic triamide (0.016 g, 0.068 mmol), allyl bromide (0.011 g, 0.09 mmol) and stirred for 3 hours at 20 C. The product mixture was diluted with 10% aqueous HCl, extracted twice with dichloromethane (20 mL), and concentrated. Flash chromatography (10% EtOAc in hexanes, silica) resulted in 0.011 g of a clear oil. MS calculated for C18H21BrF3NO2+H: 420, observed: 420.

Workup

  1. extractionextracted twice with dichloromethane (20 mL)
  2. concentrationconcentrated

Sources & evidence

ORD record
ord-1fd5ac105cc24304b8783594b3714c68
Source dataset
uspto-grants-2012_09
Patent number
US08273734B1

Reaction notes

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