2-Bromo-2-methylpropane is heated with $NaOEt$ in ethanol. The principal product is

A2-methylpropane
Btert-butyl ethyl ether
C2-methylpropene
D2-methylpropan-2-ol

Answer: C

Ethoxide is a strong base and a tertiary carbon is too hindered for SN2 attack. A beta hydrogen is removed in an E2 step, so the main product is the alkene 2-methylpropene.

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2-Bromo-2-methylpropane is heated with NaOEt in ethanol. The principal product is

Answer: C

More questions on Substitution vs elimination competition

2-Bromo-2-methylpropane is heated with $NaOEt$ in ethanol. The principal product is