12-Alkoxy-3,7,11-trimethyl-dodecatetraenes

Details 12-Alkoxy-3,7,11-trimethyl-dodecatetraenes 12-Alkoxy-3,7,11-trimethyl-dodecatetraenes

1976-07-09

1977-06-21

Mars, Howard T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252522, 260594, 260615R, 260483, 260484A, C07C 4300, C07C 4314

Patent

active

040311414

ABSTRACT:
New 12-alkoxy-3,7,11-trimethyl-dodecatetraenes are of interest as perfume and flavor materials having a mandarin and orange effect.
The new compounds can be manufactured relatively simply, e.g. by vinylating or ethynylating the corresponding new, but easily accessible, 7-alkoxy-6-methyl-hept-5-en-2-ones and subsequently partially hydrogenating the products, reacting the resulting allyl alcohols with acetoacetic acid esters or diketenes at an elevated temperature, again vinylating or ethynylating the alkoxyketones obtained, then partially hydrogenating the products, and eliminating water from the 12-alkoxy-3,7,11-trimethyl-3-hydroxy-dodecatrienes thus obtained.

REFERENCES:
patent: 3429970 (1968-02-01), Ruegg et al.
patent: 3665040 (1972-05-01), Ruegg et al.
patent: 3801652 (1974-11-01), Ruegg et al.
patent: 3943177 (1976-03-01), Helmlinger et al.

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