The LiAlH4 reduction of 2,2-diphenylpropionitrile (4) in THF yields a mixtu
re of the hydrocarbon 6 and the expected amine 5. Medium effects and reduct
ion with LiAlD4 suggest a mechanism involving the attack of the hydride rea
gent on the cyano carbon atom followed by the fragmentation of the formed i
mine salt intermediate. Copyright (C) 2000 John Wiley & Sons, Ltd.