Benzylamine → Tert-butyl 2-(benzylamino)acetate

Temperatur

2.5 °C

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 title product (95% pure by GC).

1. temperaturethe reaction mixture was warmed to room temperature
2. filtrationThe resulting suspension was filtered
3. customevaporated to constant weight

ORD-Eintrag

ord-3ca04a173c1949649c869ba250c7165b

Quelldatensatz

uspto-grants-2011_12

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08071586B2