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Two substitution reactions of triphenylmethanol

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NMR, Ir, MP, and a beilstein test were performed. rx1)(hbr) beilstein test was positive. mp. 125-129 C. rx2)(HI) beilstein test was negative. mp. was 145-148 C.
I dont understand what was hapening in this reaction. I need a detailed description of the mechanims.

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Two substitution reactions of triphenylmethanol are examined.

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The reaction you are attempting to perform is an SN1 substitution - I have attached the accepted mechanism for this :)

The key is:

In reaction (i) the beilstein test is positive, so a organic halide is present - The reaction was successful
In reaction (ii) the belistein test is negative, so no organic halide is present - The reaction was a failure

Both HI and HBr are strong acids so in both cases OH is turned into a good ...

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