反应 #3406454
相关文献 (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US08722629B2
反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: 500 mg (1.9 mmol) of N-(tert-butoxycarbonyl)-L-phenylalanine were dissolved in 10 ml of DMF, and 466 mg (3.8 mmol) of 1,2-oxazinane hydrochloride (Starting Material 5), 433 mg (2.3 mmol) of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, 382 mg (2.8 mmol) of 1-hydroxy-1H-benzotriazole hydrate and 731 mg (5.7 mmol) of N,N-diisopropylethylamine were added in succession. The mixture was stirred at RT overnight. The reaction was then poured into a mixture of semisaturated aqueous ammonium chloride solution and ethyl acetate. The organic phase was separated off, washed successively with saturated sodium bicarbonate solution and saturated sodium chloride solution, dried over magnesium sulphate, filtered and concentrated. This gave 620 mg (98% of theory) of the title compound. The organic phase was separated off washed successively with saturated sodium bicarbonate solution and saturated sodium chloride solution dried over magnesium sulphate filtered concentrated
来源 ID: ord-e8f2cd71af9f4798ba33192f2646a668