Dimethylformamide → tert-Butyl 7-chloro-9-(1-chloroethyl)-6-methyl-2,3-dihydro-1,4-benzoxazepine-4(5H)-carboxylate

HRID 626818Notes

Reaction equation

HRID 626818 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([CH:21](O)[CH3:22])[C:5]2[O:11][CH2:10][CH2:9][N:8]([C:12]([O:14][C:15]([CH3:18])([CH3:17])[CH3:16])=[O:13])[CH2:7][C:6]=2[C:19]=1[CH3:20].CN(C)C=O.S(Cl)([Cl:31])=O>C(Cl)Cl>[Cl:1][C:2]1[CH:3]=[C:4]([CH:21]([Cl:31])[CH3:22])[C:5]2[O:11][CH2:10][CH2:9][N:8]([C:12]([O:14][C:15]([CH3:18])([CH3:17])[CH3:16])=[O:13])[CH2:7][C:6]=2[C:19]=1[CH3:20]

Participants

5

Reactant 3

HCID 6228DimethylformamideHCID 24386Thionyl ChlorideHCID 86697515tert-Butyl 7-chloro-9-(1-hydroxyethyl)-6-methyl-2,3-dihydro-1,4-benzoxazepine-4(5H)-carboxylate

Product 1

HCID 86697516tert-Butyl 7-chloro-9-(1-chloroethyl)-6-methyl-2,3-dihydro-1,4-benzoxazepine-4(5H)-carboxylateYield 100%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

A mixture of tert-butyl 7-chloro-9-(1-hydroxyethyl)-6-methyl-2,3-dihydro-1,4-benzoxazepine-4(5H)-carboxylate (280 mg, 0.82 mmol) and N,N-dimethylformamide (30 μL) in methylene chloride (6 mL) was stirred and thionyl chloride (120 μL, 1.7 mmol) was added dropwise. The mixture was stirred at room temperature for 20 minutes. The mixture was diluted with methylene chloride, washed with saturated sodium bicarbonate, water, brine, dried over sodium sulfate, filtered and concentrated to give the desired product (295 mg, 100%).

Workup

  1. stirringThe mixture was stirred at room temperature for 20 minutes
  2. washwashed with saturated sodium bicarbonate, water, brine
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-509e671eedbf468f85b9eeff144917ee
Source dataset
uspto-grants-2016_04
Patent number
US09309251B2

Reaction notes

Loading…