反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
tert-Butyl-N-((1S,2R)-1-benzyl-3-(isopropyloxy)amino-2-hydroxypropyl)carbamate (86 mg, 0.25 mmol) was combined with 2-[(methylsulfonyl)amino]benzimidazol-5-ylsulfonyl chloride (77 mg, 0.25 mmol) in anhydrous pyridine (1 ml) with a catalytic amount of N,N-dimethylaminopyridine. The reaction was stirred at room temperature overnight. The solvent was evaporated under vacuum. The crude mixture was diluted in EtOAc and washed with water and brine. Organic phase was dried with MgSO4 and solvent was removed in vacuo. Purification by TLC prep (2% MeOH/CH2Cl2). Recovered 56 mg (37%) of product as a white solid. HPLC showed the material to be 98% pure; Ret. time=9.87 min. 1H NMR (CDCl3): 7.12-8.04 (m, 8H), 6.5 (m, 1H), 4.47-4.51 (m, 2H), 3.68 (m, 2H), 3.22 (s, 3H), 2.81-2.88 (m, 3H), 1.75 (m, 2H), 1.22 (s, 9H), 1.16 (d, 6H). MS (ES+): obs. M+H@ 612.1 amu.
WORKUP
后处理
- customThe solvent was evaporated under vacuum
- additionThe crude mixture was diluted in EtOAc
- washwashed with water and brine
- dry with materialOrganic phase was dried with MgSO4 and solvent
- customwas removed in vacuo
- customPurification by TLC prep (2% MeOH/CH2Cl2)
- customRecovered 56 mg (37%) of product as a white solid