15 - methyl - and 15 - 13 - oxo - and ethylene - 13 - hydroxy bicyclo - pentadecane 10.3.0 or pentadecene - 1 (12) procedures to manufacture and use as fragrances

摘要

Novel 13-oxo.-bicyclo 10,3,0 pentadecanes or pentadecanes 1(12) are of formula (I) (where R1 is CH3 or C2H5 and A and B are either both H or form a double bond). (I), esp. when R1=CH3, have a fine, adherent musk odour. The odour of (I) is extremely close to best available musk odourants currently available. They are also intermediate for other novel, odoriferous cpds. as well as providing a synthetic route for the prodn. of muscone.