The participation effect of halogen atoms in stereospecific Friedel–Crafts alkylations
Abstract
The Friedel–Crafts alkylation of benzene with optically active 1,2-, 1,3-, 1,4-, and 1,5-dihalogenoalkanes gave the corresponding primary phenylalkyl halides with a stereospecificity which depended primarily on the type of terminal halogen or the variation in carbon chain length.