The previous page is sending you to https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Basic_Principles_of_Organic_Chemistry_(Roberts_and_Caserio)/14%3A_Organohalogen_and_Organometallic_Compounds/14.13%3A_Organomagnesium_and_Organolithium_Compounds_in_Synthesis.

 If you do not want to visit that page, you can return to the previous page.