Dicarboxylic acids, such as adipic acid, and diesters, such as adipates, may be produced by hydrogenating alkynes that may be produced from raw materials salvaged from waste stream processes. The carbons of the dicarboxylic acids are provided by alkynes generated from biomass waste and carbon dioxide recovered from waste streams such as exhaust gases.

The present invention relates to the use as perfuming ingredient, in particular to confer odor notes of the violet, violet leaves type, of a compound of formula (I), wherein n represents 1 or 2, A represents CH.sub.2 or CO; and R represents a C.sub.1-4 alkyl or alkenyl group or a C.sub.3 cycloalkyl group, or when A is a CH.sub.2 group R may also represent a C.sub.1-3 acyl group. Moreover, following what is mentioned herein, the present invention comprises the invention's compound as part of a perfuming composition or of a perfuming consumer product. ##STR00001##

The present invention relates to ethynyl derivatives of formula I

##STR00001##

with variables as defined herein, or to a pharmaceutically acceptable acid addition salt thereof.

Compounds of formula I are metabotropic glutamate receptor antagonists (negative allosteric modulators) for use in the treatment of, e.g., anxiety and pain, depression, Fragile-X syndrome, autism spectrum disorders, Parkinson's disease, and gastroesophageal reflux disease (GERD).

The present invention relates to ethynyl derivatives of formula I

##STR00001##

with variables as defined herein, or to a pharmaceutically acceptable acid addition salt thereof.

Compounds of formula I are metabotropic glutamate receptor antagonists (negative allosteric modulators) for use in the treatment of, e.g., anxiety and pain, depression, Fragile-X syndrome, autism spectrum disorders, Parkinson's disease, and gastroesophageal reflux disease (GERD).

This invention is directed to novel mixed transition metal iron (II/III) catalysts for the extraction of oxygen from CO.sub.2 and the selective reaction with organic compounds.

This invention is directed to novel mixed transition metal iron (II/III) catalysts for the extraction of oxygen from CO.sub.2 and the selective reaction with organic compounds.

This invention is directed to novel mixed transition metal iron (II/III) catalysts for the extraction of oxygen from CO.sub.2 and the selective reaction with organic compounds.

This invention is directed to novel mixed transition metal iron (II/III) catalysts for the extraction of oxygen from CO.sub.2 and the selective reaction with organic compounds.

The present invention relates to ethynyl derivatives of formula I ##STR00001##
with variables as defined herein, or to a pharmaceutically acceptable acid addition salt thereof Compounds of formula I are metabotropic glutamate receptor antagonists (negative allosteric modulators) for use in the treatment of, e.g., anxiety and pain, depression, Fragile-X syndrome, autism spectrum disorders, Parkinson's disease, and gastroesophageal reflux disease (GERD).

The present invention relates to ethynyl derivatives of formula I ##STR00001##
with variables as defined herein, or to a pharmaceutically acceptable acid addition salt thereof Compounds of formula I are metabotropic glutamate receptor antagonists (negative allosteric modulators) for use in the treatment of, e.g., anxiety and pain, depression, Fragile-X syndrome, autism spectrum disorders, Parkinson's disease, and gastroesophageal reflux disease (GERD).