Please watch: “Problem of Carbonyl Compounds with Grignard Reagent|Organic Chemistry Class 12 Part 8 |Hindi/English”
https://www.youtube.com/watch?v=ngiijTHMw5o‌ ‌‌ ‌
In this video , I have explained ,how the hydroxyl group of an alcohol is replaced by halogrn on reaction with phosphorous halide ,thionyl chloride red p/x2 and with NaBr in presence of acid.
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Sir where are the other parts