反应 #355786

反应方程式

dichloromethane

1,1-dioxotetrahydro-1λ6-thiophen-3-ylamine trifluoroacetic acid salt

N,N′-diisopropylethylamine

sodium triacetoxyborohydride

→

title intermediate

1-isopropyl-2-oxo-1,2-dihydroquinoline-3-carboxylic acid

溶剂

Water

反应条件

后处理

1. 1
   其他to quench the
2. 2
   workup.ADDITIONThe mixture was diluted with 100 mL of dichloromethane
3. 3
   workup.STIRRINGshaken in a funnel
4. 4
   其他before collecting the organic layer
5. 5
   洗涤The organic layer was washed with 1M NaOH (40 mL) and brine (50 mL)
6. 6
   干燥dried over MgSO4
7. 7
   其他evaporated

实验过程

1,1-dioxotetrahydro-1λ6-thiophen-3-ylamine trifluoroacetic acid salt (500 mg; 2 mmol), N,N′-diisopropylethylamine (0.35 mL), and sodium triacetoxyborohydride (422 mg; 2 mmol) was added to a vial containing 10 mL of dichloromethane. The mixture was stirred for 5 minutes prior to the addition of 1-isopropyl-2-oxo-1,2-dihydroquinoline-3-carboxylic acid {(1S, 3R, 5R)-8-[(2,2-dihydroxy)ethyl]-8-azabicyclo[3.2.1]oct-3-yl}amide (0.427 g). The final mixture was stirred for 1 h, at which time the reaction was judged to be complete based on HPLC and mass spectrometric analysis. Water (20 mL) was slowly added to quench the remaining reducing agent. The mixture was diluted with 100 mL of dichloromethane, and shaken in a funnel before collecting the organic layer. The organic layer was washed with 1M NaOH (40 mL) and brine (50 mL), dried over MgSO4, and evaporated to yield the title intermediate as a colorless solid. This crude product was used in the next step without further treatment.

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