1-Chloro-2-methylbutane is a halogenated organic building block. It can be synthesized by employing 2-methylbutanol as starting reagent. Grignard reagent derived from (+)-1-chloro-2-methylbutane may be employed for the preparation of partially optically active (-)-alkylphenylcarbinols and partially optically active secondary carbinols. Infrared and Raman spectra of its optically active form (+)(S)-1-chloro-2-methylbutane in various phases (liquid, glass and crystal) have been evaluated.