Results 3-Ethyl-3-pentyl Cation.-Suitable experimental conditions for carrying out the hydride transfer reactions were determined using 3-ethyl-3-pentanol (1) and measuring its conversion to 3-ethylpentane (2) by gas chromatography. Using diethylsilane as the hydride donor in methylene chloride at 25'and trifluoroacetic acid as the proton source (0.5 M), conversion to 2 was complete to the extent of only about 19% in 0.5 hr. Increasing the ...