2-(4-methoxyphenyl)-4-methylenetetrahydropyran 、 5,6-dihydro-4-methyl-2-(4-methoxyphenyl)-2H-pyran 以35-55% 3,6-dihydro-4-methyl-2-(4-methoxyphenyl)-2H-pyran is provided at a level of from about from about 0.1 to about 50 of the fragrance composition的产率得到3,6-dihydro-4-methyl-2-(4-methoxyphenyl)-2H-pyran