Abstract:
The general part of the experimental section [1] has been presented elsewhere. nBuLi (1.6 M) (1.9 ml, 5.9 mmol) was added dropwise to a solution of silyl ether 1 (500 mg, 2.94 mmol) in THF (10 mL) at 78 oC under nitrogen and stirred for 45 min. ...