反应详情

温度

-78 °C

A solution of tert-butyl 3-cyanoazetidine-1-carboxylate (0.55 g, 3.04 mmol) in THF (10 ml) was cooled to −78° C. under a nitrogen atmosphere. LHMDS (3.34 ml, 1M THF) was added dropwise and the solution stirred at −78° C. for 1 hr. Methyl iodide was added dropwise and stirring continued for a further 2 h. The reaction was quenched with water and diluted with ethyl acetate. The organic layer was washed with brine, dried (Na2SO4) and concentrated. The residue was purified on silica gel eluting with 20% ethyl acetate/petrol provide the title compound as a pale yellow oil (0.46 g, 77%). 1H NMR (CDCl3) 1.48 (9H, s), 1.71 (3H, s), 3.82 (2H, d), 4.31 (2H, d).

1. stirringstirring
2. waitcontinued for a further 2 h
3. customThe reaction was quenched with water
4. additiondiluted with ethyl acetate
5. washThe organic layer was washed with brine
6. dry with materialdried (Na2SO4)
7. concentrationconcentrated
8. customThe residue was purified on silica gel eluting with 20% ethyl acetate/petrol