清我8米大研 Sec 1 Preparation of RX Free radical halogenation produces mixtures,not good lab synthesis ounless:all H's are equivalent,or ohalogenation is highly selective. Free radical allylic halogenation oproduces alkyl halide with double bond on the neighboring carbon.Sec 1 Preparation of RX Free radical halogenation produces mixtures, not good lab synthesis unless: all H’s are equivalent, or halogenation is highly selective. Free radical allylic halogenation produces alkyl halide with double bond on the neighboring carbon