反应详情

To a solution of 3-[3-(1,1-dimethylethylthio)-5-(quinolin-2-ylmethoxy)-1-(4-chlorophenylmethyl)indol-2-yl]-2,2-dimethylpropionic acid (2.57 g, 4.4 mmol) in THF (20 mls) was added borane dimethyl sulfide complex (1.06 g, 14.0 mmol) dropwise. Upon completion of addition, the reaction was stirred for 18 hrs. It was then quenched slowly and dropwise with aqueous sat'd NaHCO3 (30 mls). The THF was stripped off in vacuo and the aqueous residue was extracted with ethylacetate (3×50 mls). The organics were combined, dried with MgSO4 and concentrated. The resulting residue was chromatographed (silica gel, ether:hexanes, 1:1) to afford 1.82 g (72%) of 3-[3-(1,1-dimethylethylthio)-5-(quinolin-2-ylmethoxy)-1-(4-chlorophenylmethyl)indol-2-yl]-2,2-dimethylpropanol as a white foam.

1. additionUpon completion of addition
2. customIt was then quenched slowly and dropwise with aqueous sat'd NaHCO3 (30 mls)
3. extractionthe aqueous residue was extracted with ethylacetate (3×50 mls)
4. dry with materialdried with MgSO4
5. concentrationconcentrated
6. customThe resulting residue was chromatographed (silica gel, ether:hexanes, 1:1)