Process for the preparation of cyclopentadec-4-ynone and of its

Details Process for the preparation of cyclopentadec-4-ynone and of its Process for the preparation of cyclopentadec-4-ynone and of its

1983-05-25

1984-05-15

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

C25B 302

Patent

active

044486502

ABSTRACT:
The macrocyclic acetylenic ketones of formula ##STR1## wherein symbol R designates a hydrogen atom or a methyl radical are prepared by an anodic oxidation of a hydrazone of formula ##STR2## wherein R has the above given meaning and A represents a hydrogen atom or a sulfonyl radical of formula R.sup.1 --SO.sub.2 --, wherein R.sup.1 stands for a substituted or unsubstituted aryl group.
Compounds (I) are useful industrial intermediates for the preparation of EXALTONE.RTM. and muscone, two musk ingredients widely used in the perfume industry.

REFERENCES:
patent: 4277318 (1981-07-01), Matlock et al.

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