JEE Main levelSingle correct optionDifficulty 2 of 3o2190
3,3-Dimethylbut-1-ene is treated with Hg(OAc)X2,HX2O and then NaBHX4. The major product is
A3,3-dimethylbutan-1-ol
B3,3-dimethylbutan-2-ol
C2,2-dimethylbutan-1-ol
D2,3-dimethylbutan-2-ol
Answer: B
Oxymercuration gives no rearrangement. OH goes to the internal carbon (Markovnikov) and the skeleton is unchanged. The product is (CHX3)X3C−CH(OH)CHX3, 3,3-dimethylbutan-2-ol.