Question

Organic Chemistry II: Please answer the following questions with clear hand-writing or typing. Answer both of the questions. Question 1 and question 2.

Draw the reaction mechanism of the following reaction. Name the products and reachanks. Hory HBr (lequiv)

$Draw the product of the following reaction. Name the reactants and products. CH₃ CH2 CH3 co CH₂ CH₃C\CH₂$

Answer 1

/ Om H67 HET 113- hexa diene A-BromoT hex-len 1 Kinetic produits HECH 2-Bromo hex-z-ene thermodynamic stable product (major) (high temperature) minos) Llow temper mechanism 2,3.diretag HBr - 4t+ B 2, 3-dernethyl-1,3-butediona dienes Mechanism H - 12 Carbo cativo 2-Bromo, hex-3-ene. learn In the above mechanism 2 Carbocation c u more I stable according to tI effect. So the resultant of 1 2 carbocation is major product (more stable). the 20 is resonendly stabilised Chez C LCH2CH=CH-CH ² -CH=CH-CH-CH₂ CH₂ [Resonence structures] diene dienophile Adduct. Harley AA 4 -Bromoct pentene. 1,4- pentadiene. Mechanism - HBr - H+ + Bo 4-Bromo, i-pentene 12 Carbocation, more stable.