Propose a synthesis scheme for the formation of 1-methylcyclopent-1-ene from cyclopentanol.

Synthesis scheme for 1-methylcyclopent-1-ene from cyclopentanol using CrO3.

Alternative synthesis scheme for 1-methylcyclopent-1-ene using CH3MgBr and HBr.

Synthesis scheme using NaBH4 and CH3MgBr for 1-methylcyclopent-1-ene formation.

Another synthesis scheme for 1-methylcyclopent-1-ene using CH3CH2MgBr and HBr.