I am confused with the reduction of quaternary ammonium salt. ##Ph-CH_2-CH_2-N^+Me_3## on reduction with Zn-Hg in HCl will not work. The -NMe3 is not disturbed(given in my text). But why? Also the text says On reduction with LiAlH4 or NaBH4, -NMe3 would be disturbed. what would be the product? In which way will the reaction proceed? Wolf-kishner reduction will disturb the group. But what would the final product be?