Olah Reaction CH CH3 35~37 N≡NBC4 Cl n, +bCI 77.6% CH CH 128~134 N≡NBBr4 ①D 一Br+N2+BBr3 ⑨D 96.5Organic Chemistry Organic Chemistry Xiamen Xiamen University University Olah Reaction Olah Reaction N N BCl4 - + CH 3 35~37 Cl CH 3 N N BBr4 - + CH 3 128~134 Br CH 3 + N 2 + BCl 3 + N 2 + BBr 3 77.6% 96.5%