| Patent Number |
Title Of Patent |
Date Issued |
| 7345206 |
Process for the dimerisation of alkyl glyoxals |
March 18, 2008 |
| The present invention relates to the field of organic synthesis and more particularly to a new process for the dimerisation of alkyl glyoxals, said process being promoted by an alkaline salt of the hydroxymethanesulfinic acid and is performed at a pH comprised between 3.5 and 9.5. |
| 7321067 |
Process for the preparation of 1,4-dialkyl-2,3-diol-1,4-butanedione |
January 22, 2008 |
| The present invention relates to a process for the preparation of compounds of a 1,4-dialkyl-2,3-diol-1,4-butanedione by a catalytic aldol condensation between an alkyl glyoxal and an .alpha.-hydroxy ketone. |
| 7022665 |
Acetals of 2,4,7-decatrienal as perfuming or flavoring ingredients |
April 4, 2006 |
| The present invention relates to an acetal of formula ##STR00001## in which the symbols R.sup.1 represent, independently or simultaneously, a linear or branched saturated or unsaturated C.sub.1 to C.sub.4 hydrocarbon group; or the two R.sup.1 are bonded together to form a saturated |
| 5760277 |
Process for the manufacture of unsaturated cycloaliphatic ketones |
June 2, 1998 |
| The cycloaliphatic ketones of formula ##STR1## having two conjugated double bonds in positions 1 and 3, or 2 and 4, such as indicated by the dotted lines, and wherein R defines a C.sub.1 to C.sub.3 alkyl radical, usefuil intermediate products for the preparation of jasmonic deriv |
| 5538943 |
Use of 1,3-undecadien-5-yne as a perfuming ingredient |
July 23, 1996 |
| 1,3-Undecadien-5-yne and its (E) and (Z) configuration isomers are useful perfuming ingredients for the preparation of perfuming bases and a variety of perfumed consumer products, to which they impart odor characters of the galbanum, floral, fruity-citrus type. |
| 5268356 |
Cyclic tertiary alcohols and their use as perfuming ingredients |
December 7, 1993 |
| The cyclic tertiary alcohols of formula ##STR1## wherein the dotted line indicates the location of a single or double bond, symbols R.sup.1 and R.sup.3 represent each a hydrogen atom or a methyl radical and symbol R.sup.2 stands for a lower alkyl radical, are useful perfuming ing |
| 4814469 |
Novel hydroperoxide and use of same as intermediate for the preparation of 3a,6,69a-tetramethylp |
March 21, 1989 |
| Novel hydroperoxide of formula ##STR1## and use of same as intermediate for the preparation of 3a,6,6,9a-tetramethylperhydronaphtho[2,1-b]furan, also known as AMBROX (registered tradename of FIRMENICH SA, Geneva/Switzerland).Process for its preparation via an oxidation of sclareol by |
| 4734530 |
Novel hydroperoxide and use of same as intermediate for the preparation of 3a,6,6,9a-tetramethyl |
March 29, 1988 |
| Novel hydroperoxide of formula ##STR1## and use of same as intermediate for the preparation of 3a,6,6,9a-tetramethylperhydronaphtho[2,1-b]furan, also known as AMBROX (registered tradename of FIRMENICH SA, Geneva/Switzerland).Process for its preparation via an oxidation of sclareol by |
| 4371460 |
Bicyclic compounds and utilization thereof as perfuming agents |
February 1, 1983 |
| Kentones of the formula ##STR1## wherein each of the symbols R.sup.1, R.sup.2, and R.sup.3 identical or different, represent a hydrogen atom or a lower alkyl radical containing 1 to 3 carbon atoms are disclosed useful as perfuming agents and in the preparation of perfume products |
| 4266075 |
Bicyclic aldehyde derivatives, their use as perfuming and flavoring ingredients and process for |
May 5, 1981 |
| Bicyclic aldehyde derivatives of formula ##STR1## containing a single or a double bond in the position indicated by the dotted lines and wherein symbol R.sup.1 represents a hydrogen atom or a methyl radical and R.sup.2 defines a linear or branched alkyl radical containing 1 to 6 |
| 4218347 |
Bicyclic aldehyde perfuming and flavoring ingredients |
August 19, 1980 |
| Bicyclic aldehyde derivatives of formula ##STR1## containing a single or a double bond in the position indicated by the dotted lines and wherein symbol R.sup.1 represents a hydrogen atom or a methyl radical and R.sup.2 defines a linear or branched alkyl radical containing 1 to 6 |
| 4176139 |
Process for preparing unsaturated spiranic derivatives |
November 27, 1979 |
| Process for preparing unsaturated spiranic derivatives of formula ##STR1## wherein index n represents integer 1 or 2 and wherein symbol R defines a lower alkyl radical, starting from the corresponding cycloalkanone via an addition thereto of a dihalo-alkene of formula ##STR2## |
