Abstract: The hydroxycitronellal has been synthesized from citronellal. The oxazolidine derivative has been prepared from citroncllal and diethanolamine by using dehydrator for protecting citroncllal carbonyl. The citroncllal-dicthanolamine adduct were hydrated with the sulfuric acid and an affix catalytic promoter with subsequent hydrolysis to hydroxycitronellal.The optimum experimental conditions were obtained by using orthogonal experimental design. Thc yield of the condensation compound and the hydroxycitronellal have been achieved to be 96.6% and 87.7% respectively. The rate of inversion of the citronellal achieved 84.7%.

Key words: hydroxycitronellal, citronellal, diethanolamine, perfume