'Tertiary carbocation' diaporamas de présentation

12.9 Rate and Regioselectivity in Electrophilic Aromatic Substitution

12.9 Rate and Regioselectivity in Electrophilic Aromatic Substitution. A substituent already present on the ring can affect both the rate and regioselectivity of electrophilic aromatic substitution. Effect on Rate.

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10.9 Preparation of Dienes

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Addition of HX across a double bond

Addition of HX across a double bond. And Carbocation rearrangement. Addition of HX across a double bond. An acid, HX, such as HCl, HBr and HI add across a double in this fashion. This is called Markovnikov addition of HX across a double bond. Markovnikov Addition.

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both 2- and 3-pentanone would be formed on hydration

D. PAVIA CHEM 352. ANSWERS - SAMPLE EXAM ONE. 1. A. B. C. D. 2. both 2- and 3-pentanone would be formed on hydration. 3. Lindlar catalyst (Pd / BaSO 4 / quinoline ) is required. Other catalysts will not stop at the alkene, which is more reactive than the alkyne. 4. a).

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