3, 4-Dihydro-isobenzopyran derivatives are synthesized by a new method which is not found in literatures. The characterization of this method is high yield, short reaction time, low cost and lower pollution, which overcomes the shortcomings of the reported routes. The synthesized isochroman musks have been conformed by structure analysis.

Key words: NMR SPECTROMETRY, SYNTHESIS METHODS, MUSK, INFRARED SPECTROPHOTOMETRY