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Which of the following syntheses could not be doen without involving blocking positions on the ring?A. B. C. D. |
Answer» Correct Answer - `c` In (c), phenol is `o-` and `p-` directing so both the products would be obtained. Thus to obtain ortho-product exclusively, `p-` position has to be blocked first, and then `Br` intoduced in ortho-postion, followed by the removel of group from `p-` postion. |
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