MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryAlkyl and Aryl HalidesE elimination follows an antiperiplanar structure
The major product obtained when this substrate is subjected to E1 reaction will be (a) (b) (c)
D.all three in equal proportions.
Explanation
The E1 elimination of 1-Bromo-1methylcyclohexnae is a two-step reaction. In the first step, the bromine atom takes its bonding electron pair and forms a tertiary carbocation. In the next step, the base abstracts the beta-hydrogen atom and forms a 1-methyl-cyclohexene as a product. The reaction is as shown below: 59. 2-bromopentane is heated with potassium ethoxide in ethanol. The major product obtained is (a) Pent-1-ene (b) cis pent-2-ene (c) trans pent-2-ene (d) 2-ethoxypentane This is an 2 E elimination, where trans-alkene is more favoured in which the same groups are on the oppos
Practice More Like This
Take chapter-wise tests, track your progress, and master Alkyl and Aryl Halides.
Start Free Practice →