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).

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.

Provided are a lignin degradation catalyst that exhibits excellent lignin degradability and that is readily separated after degradation reaction, a method for producing the catalyst, and a method for degrading lignin. The lignin degradation catalyst according to the present invention contains a substrate and at least one metal compound immobilized on the substrate, wherein the at least one metal compound contains a copper compound. The method for producing a lignin degradation catalyst according to the present invention includes the step of brining a porous copper substrate into contact with a solution containing an oxidant to obtain a substrate having a copper compound immobilized thereon, or the step of subjecting a porous copper substrate to electro-oxidation to obtain a substrate having a copper compound immobilized thereon.

Provided are a lignin degradation catalyst that exhibits excellent lignin degradability and that is readily separated after degradation reaction, a method for producing the catalyst, and a method for degrading lignin. The lignin degradation catalyst according to the present invention contains a substrate and at least one metal compound immobilized on the substrate, wherein the at least one metal compound contains a copper compound. The method for producing a lignin degradation catalyst according to the present invention includes the step of brining a porous copper substrate into contact with a solution containing an oxidant to obtain a substrate having a copper compound immobilized thereon, or the step of subjecting a porous copper substrate to electro-oxidation to obtain a substrate having a copper compound immobilized thereon.

The present invention relates to an improved method for producing of 1-(5,5-dimethylcyclohex-1-en-1-yl)ethanone and 1-(5,5-dimethylcyclohex-6-en-1-yl)ethanone.

The present invention relates to an improved method for producing of 1-(5,5-dimethylcyclohex-1-en-1-yl)ethanone and 1-(5,5-dimethylcyclohex-6-en-1-yl)ethanone.

The present invention relates to a new method to produce 7,8-dihydro-C.sub.15-aldehyde.

The invention relates to a process for the production of 1,3-butadiene from ethanol, the process comprising a first stage and a second stage. Furthermore, the invention relates to a catalyst system for use in the production of 1,3-butadiene from ethanol. Moreover, the invention relates to the use of the catalyst system for the production of 1,3-butadiene from a feed comprising ethanol, and a plant comprising the catalyst system.