Benzylamine → Tert-butyl 2-(benzylamino)acetate
Reaction equation
Br[CH2:2][C:3]([O:5][C:6]([CH3:9])([CH3:8])[CH3:7])=[O:4].[CH2:10]([NH2:17])[C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1>C(#N)C>[C:6]([O:5][C:3](=[O:4])[CH2:2][NH:17][CH2:10][C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1)([CH3:9])([CH3:8])[CH3:7]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 2.5 °C
Procedure
40 g (205 mmol, 1 eq.) tert-butyl bromoacetate were dissolved in 200 ml acetonitrile. The solution was cooled to 0-5° C. and 47 g benzylamine (2.14 eq.) in solution in 90 ml acetonitrile were added over 15 min. After 5 min, the reaction mixture was warmed to room temperature and stirred for 3 h (IPC by GC). The resulting suspension was filtered and evaporated to constant weight to give 49 g of a yellow oil. The oil was dissolved in 200 ml heptane and washed 3 times with 50 ml aq. sodium hydrogencarbonate solution. The organic phase was dried over sodium sulfate, filtered and evaporated to give 35.8 g of the crude product. Distillation under high vacuum afforded 27.2 g of the titled product (95% pure by GC).
Workup
- temperaturethe reaction mixture was warmed to room temperature
- filtrationThe resulting suspension was filtered
- customevaporated to constant weight
Sources & evidence
- ORD record
- ord-a60d207f7bbe4745bf82a4c2f3943360
- Source dataset
- uspto-grants-2013_05
- Patent number
- US08445674B2
Reaction notes
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