The present invention relates to compounds of formula (I): ##STR00001##
in which R1 is a hydrogen atom, a phenyl radical, or a straight or branched, saturated or unsaturated hydrocarbon radical having 1 to 8 carbon atoms.

The present invention relates to compounds of formula (I): ##STR00001##
in which R1 is a hydrogen atom, a phenyl radical, or a straight or branched, saturated or unsaturated hydrocarbon radical having 1 to 8 carbon atoms.

The present invention relates to compounds of formula (I):

##STR00001##

in which R1 is a hydrogen atom, a phenyl radical, or a straight or branched, saturated or unsaturated hydrocarbon radical having 1 to 8 carbon atoms.

The present invention relates to compounds of formula (I):

##STR00001##

in which R1 is a hydrogen atom, a phenyl radical, or a straight or branched, saturated or unsaturated hydrocarbon radical having 1 to 8 carbon atoms.

The present invention relates to compounds of formula (I):

##STR00001##

in which R1 is a hydrogen atom, a phenyl radical, or a straight or branched, saturated or unsaturated hydrocarbon radical having 1 to 8 carbon atoms.

Disclosed is a cyclopropanation process comprising the step of reacting an alkene compound having at least one carbon-carbon double bond with at least one dihaloalkane. The reaction is carried out in the presence of (i) particulate metal Zn, (ii) catalytically effective amount of particulate metal Cu or a salt thereof, (iii) at least one haloalkylsilane, and (iv) at least one solvent.

Disclosed is a cyclopropanation process comprising the step of reacting an alkene compound having at least one carbon-carbon double bond with at least one dihaloalkane. The reaction is carried out in the presence of (i) particulate metal Zn, (ii) catalytically effective amount of particulate metal Cu or a salt thereof, (iii) at least one haloalkylsilane, and (iv) at least one solvent.

Disclosed is a cyclopropanation process comprising the step of reacting an alkene compound having at least one carbon-carbon double bond with at least one dihaloalkane. The reaction is carried out in the presence of (i) particulate metal Zn, (ii) catalytically effective amount of particulate metal Cu or a salt thereof, (iii) at least one haloalkylsilane, and (iv) at least one solvent.

The current invention belongs to the technical fields of fine chemicals and related chemistry, and provides a preparation method for butadiene derivatives. Arylacetylenes and derivatives using as raw materials react in an anhydrous organic solvent in the presence of a metal catalyst and an additive, and are converted into 2,3-disubstituted-1,3-butadiene derivatives. The current invention has some beneficial characteristics such as cheap and readily available raw material, mild reaction conditions, environmentally friendly property and possibility of realizing industrialization, and obtains the 1,3-butadiene derivatives in high yields. The 1,3-butadiene derivatives synthesized by this method can be further functionalized into various compounds which have potential applications in development and research of natural products, functional materials and fine chemicals.

The current invention belongs to the technical fields of fine chemicals and related chemistry, and provides a preparation method for butadiene derivatives. Arylacetylenes and derivatives using as raw materials react in an anhydrous organic solvent in the presence of a metal catalyst and an additive, and are converted into 2,3-disubstituted-1,3-butadiene derivatives. The current invention has some beneficial characteristics such as cheap and readily available raw material, mild reaction conditions, environmentally friendly property and possibility of realizing industrialization, and obtains the 1,3-butadiene derivatives in high yields. The 1,3-butadiene derivatives synthesized by this method can be further functionalized into various compounds which have potential applications in development and research of natural products, functional materials and fine chemicals.