Cyclic isolongifolanone-ketals - their manufacture and their app

Details Cyclic isolongifolanone-ketals - their manufacture and their app Cyclic isolongifolanone-ketals - their manufacture and their app

1992-11-18

1993-11-09

Cintins, Marianne M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D31792

Patent

active

052604594

ABSTRACT:
The cyclic Isolongifolanone ketals of the general formula A wherein the wavy lines mean .alpha. and .beta.-configuration and R,R' mean radicals of hydrogen, methyl or ethyl, are new. With preference they are used either as odorants or as components of perfume compositions. They are manufactured from Isolongifolene which is itself produced from Longifolene as is well known. Isolongifolene is oxydized to Isolongifolene-3-on and this is reacted with aliphatic 1,2-diols in apolar solvents with the separation of water.

REFERENCES:
patent: 3887622 (1975-06-01), Boelens et al.
patent: 4331569 (1982-05-01), Inoue et al.
patent: 4774225 (1988-07-01), Giraudi
patent: 4841075 (1989-06-01), Matsushita et al.
CA 81(5): 25442f (1974).
CA 89(7): 59977g (1978).

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