“…78 This reagent does not form the highly reactive alkylating agent PMBI as a side product; rather, the less reactive 4-methyoxybenzyltriphenylphosphonium iodide salt is obtained. Because the reactive PMBI may lead to undesired side reactions, which lower the yields and complicate purifications, these new conditions appear to offer a significant improvement over the use of TMSI alone.…”