반응 #418096

반응 방정식

(2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carboxylic acid

tert-butyl [2-(aminooxy)ethyl]carbamate

1-hydroxybenzotriazole

1-ethyl-(3-dimethylamino propyl)carbodiimide hydrochloride

→

42

수율 89.0%

tert-Butyl {2-[({[(2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]oct-2-yl]carbonyl}amino)oxy]ethyl}carbamate

수율 89.0%

용매

DCM

DCM

반응 조건

후처리

1. 1
   농축concentrated
2. 2
   기타to provide a residue which

실험 절차

To a mixture of (2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carboxylic acid 1 (0.150 g, 0.543 mmol, US 2005/20572 A1) in DCM (4.0 mL) was added tert-butyl [2-(aminooxy)ethyl]carbamate 41 (0.143 g, 0.814 mmol, US 2005/54701 A1), 1-hydroxybenzotriazole (0.110 g, 0.814 mmol), 1-ethyl-(3-dimethylamino propyl)carbodiimide hydrochloride (0.156 g, 0.814 mmol) and DMAP (0.100 g, 0.814 mmol) sequentially at room temperature. The mixture was stirred at room temperature overnight, diluted with DCM and concentrated to provide a residue which was subjected to chromatography to give 42 (0.21 g, 89%) as a white foam.

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