Alkylation method for beta- of secondary alcohol

The invention discloses an alkylation method for beta- of secondary alcohol. The method takes a non-metallic element as a catalyst and conducts reaction under an inert gas or air. The non-transition metallic element catalyst used in the invention has low price, and has mild reaction conditions under the catalytic system. The separation and purification in product treatment are simple, and the product recovery rate is high. Taking cheap and easily available primary alcohol as the alkylation reagent substantially reduces the synthesis cost. Being carried out under a solvent-free condition, the method provided in the invention can reduce possible environmental pollution caused by an organic solvent to some extent.