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Shweta Thakur posted an Question
April 09, 2021 • 22:56 pm 30 points
  • IIT JAM
  • Chemistry (CY)

Plz explain encircled part. on releasing ch (electron withdrawing) h h -cx x-cx h x-c h-c-h h-

nigh ene gh energy. ergy. as of hyperconjugation pes or alkene must Hyperconjugation +H Electron Releasing CH (Electron withdrawing) H H -CX X-CX H X-C H-C-H H-C H H-C H H X-C X X-C-X H-CH H-C H (m-directive) (O, P-directive H Effect Order of halngens -H Effect Order

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    Dinesh khalmaniya 1 Best Answer

    Shweta, m directive means electrophile attacks on meta position. because electron density is higher on meta position rather than ortho and para position. due to -H effect, o and p position gets +ve charge so these positions have less density so more density will be on meta position where an electrophile can attack. due to +H effect o and Para gets negative charge so more density on o and p position. so E+ will attack on o and p position rather than m position in case of +H

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