N-Lithiodimethyl Sulfone Imine.-Dimethyl sulfone imine (mp 56-58') was prepared as described by Bentley, McDermott, and Whitehead. 10 To a solution of 514 mg (5.52 mmoles) of the sulfone imine in 5 ml of benzene under argon at room temperature was added 4.08 ml (5.52 mmoles) of 1.35 N n-BuLi. The resulting, milky white liquid was then stirred for 2 hr and evaporated to dryness in oacuo (0.5 mm). The infrared spectrum of the resulting, white ...
