The invention relates to a method for producing cyclododecanone (CDON). During the production, contaminated cyclododecane (CDAN) is produced. This can be separated from CDON by distillation (CDAN-containing fraction). The separation of CDAN and impurities such as 13-oxabicyclo [7.3.1]tridacane occurs by crystallizing out CDAN from the CDAN-containing fraction.

The present invention relates to an improved way for the production of farnesol.

The present invention relates to an improved way for the production of farnesol.

Compounds of formula I

##STR00001##

a process for preparation of compounds of formula I; precursor compounds of formula II

##STR00002##

a process for preparation of precursor compounds of formula II; compounds of formula III

##STR00003##

a process for the preparation of compounds of formula IV from compounds of formula III

##STR00004##

and the use of compounds of formula I for the preparation of compounds of formula IV.

Compounds of formula I

##STR00001##

a process for preparation of compounds of formula I; precursor compounds of formula II

##STR00002##

a process for preparation of precursor compounds of formula II; compounds of formula III

##STR00003##

a process for the preparation of compounds of formula IV from compounds of formula III

##STR00004##

and the use of compounds of formula I for the preparation of compounds of formula IV.

An inexpensive, stereoselective synthesis for nootkatone, tetrahydronootkatone, and their derivatives is disclosed utilizing ozonolysis. The starting materials used in the synthesis are inexpensive and the reactions are commercially feasible and amenable to scaling up. The principal starting material, ()--Pinene, is on the GRAS list (generally recognized as safe).

An inexpensive, stereoselective synthesis for nootkatone, tetrahydronootkatone, and their derivatives is disclosed utilizing ozonolysis. The starting materials used in the synthesis are inexpensive and the reactions are commercially feasible and amenable to scaling up. The principal starting material, ()--Pinene, is on the GRAS list (generally recognized as safe).

The invention relates to the production of acrolein and/or acrylic acid from glycerol, and more particularly to a method for continuous production of a stream comprising acrolein by dehydration of glycerol, comprising cycles of reaction and regeneration of a dehydration catalyst.

Disclosed is a method for recovering phenol and acetone from the cracking reaction product of bisphenol-A residue, by which economic feasibility and efficiency may be improved by utilizing a phenol/acetone purification process used for preparing bisphenol-A.

Disclosed is a method for recovering phenol and acetone from the cracking reaction product of bisphenol-A residue, by which economic feasibility and efficiency may be improved by utilizing a phenol/acetone purification process used for preparing bisphenol-A.