The present invention concerns new stable compositions of 1-Z-bromoalk-1-ene compounds of general formula (A). These compositions are characterized in that they also comprise either at least one cyclic ether compound comprising between 4 and 6 carbon atoms, or at least one ether of general formula (B) in which R.sub.1 and R.sub.2 are identical or different and selected from the group consisting of: a linear or branched alkyl group containing 1 to 8 carbon atoms.

Compounds with fire extinguishing properties having the formula: ##STR00001## wherein R.sup.1 is —CR.sup.5R.sup.6R.sup.7 or —CR.sup.5R.sup.6CR.sup.8R.sup.9R.sup.10 as well as fire extinguishing units including one or more of the compounds.

Compounds with fire extinguishing properties having the formula: ##STR00001## wherein R.sup.1 is —CR.sup.5R.sup.6R.sup.7 or —CR.sup.5R.sup.6CR.sup.8R.sup.9R.sup.10 as well as fire extinguishing units including one or more of the compounds.

The present disclosure provides compositions and methods for metathesizing a first alkenyl or alkynyl group with a second alkenyl or alkynyl group, the composition comprising a ruthenium metathesis catalyst and a photoredox catalyst that is activated by visible light.

The present disclosure provides compositions and methods for metathesizing a first alkenyl or alkynyl group with a second alkenyl or alkynyl group, the composition comprising a ruthenium metathesis catalyst and a photoredox catalyst that is activated by visible light.

The present disclosure provides compounds, compositions, and methods for preparing alkenyl halides and/or haloalkyl-substituted olefins with Z-selectivity. The methods are particularly useful for preparing alkenyl fluorides such as CF.sub.3-substituted olefins by means of cross-metathesis reactions using halogen-containing molybdenum and tungsten complexes.

The present disclosure provides compounds, compositions, and methods for preparing alkenyl halides and/or haloalkyl-substituted olefins with Z-selectivity. The methods are particularly useful for preparing alkenyl fluorides such as CF.sub.3-substituted olefins by means of cross-metathesis reactions using halogen-containing molybdenum and tungsten complexes.

The present disclosure provides compositions and methods for metathesizing a first alkenyl or alkynyl group with a second alkenyl or alkynyl group, the composition comprising a ruthenium metathesis catalyst and a photoredox catalyst that is activated by visible light.

The present disclosure provides compositions and methods for metathesizing a first alkenyl or alkynyl group with a second alkenyl or alkynyl group, the composition comprising a ruthenium metathesis catalyst and a photoredox catalyst that is activated by visible light.

Compounds with fire extinguishing properties having the formula:

##STR00001##

wherein R.sup.1 is CR.sup.5R.sup.6R.sup.7 or CR.sup.5R.sup.6CR.sup.8R.sup.9R.sup.10 as well as fire extinguishing units including one or more of the compounds.