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linghanyuan(½ð±Ò+2,VIP+0):Ã²ËÆºÜרҵ£¬ºÇºÇ£¬»¶Ó³£À´ 7-23 08:51
chual1020(½ð±Ò+15,VIP+0): 7-23 14:19
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chual1020(½ð±Ò+15,VIP+0): 7-23 14:19
| The reaction mechanism is as followings: due to the electron-withdrawing feature of nitro- and trifluoromethyl groups the chloro-groups on both ortho- positions are relatively reactive. In comparison to trifluoromethyl group nitro is a stronger electron-acceptor. Therefore, by tuning the stoichiometric ratio in the reaction one can certainly obtain product with substitution of purely the ortho- chloro-groups. The reaction of the as-prepared derivatives with Piperazine was successfully evidenced using mass spectroscopy; however, further optimization in the reaction condition is required. |

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