Unsaturated groups acetylenic series

Alkyne ( Acetylene Series). A group of unsaturated aliphatic hydrocarbons of the general formula C, contg triple bonds. 

Alkyn s( Acetylene Series). A group of unsaturated aliphatic hydrocarbons of the general formula C Jljn.2, contg triple bonds. These compds were also called Alkines ALL (Propel I ant) is described in conf "Propellant Manual," SPIA/M2, Johns Hopkins Univ, Silver Spring, M aryl an d( 1959), Unit No 406... 

The most useful synthetic methods are those based on the transfer of unsaturated residues such as allyl, vinyl, propargyl, acetylene and allene groups. It has been found, however, that saturated alkyl groups are also capable of being transfered from a silicon atom to a carbon atom. It was found at first [572] that trimethylsilylacety-lenes reacted with acyl halides in the presence of aluminium chloride to give ketones of the acetylene series (Eq. 4.33) ... 

In addition to inorganic radicals, which profoundly modify the properties of a paraflSn hydrocarbon residue, there is a whole series of organic groupings which are distinguished by exceptional reactivity, for example, the ethylene and acetylene groupings, and the phenyl and naphthyl radicals. Thus the characterisation of unsaturated hydrocarbons and their derivatives, e.g., the aromatic compounds, becomes possible. 

By Addition to Unsaturated Substrates. Bromo- and iodo-functionalization of alkenes using a combination of the halogen and a mercury(II) salt has enabled the preparation of a series of 1,2-disubstituted products in which the second substituent, derived from the mercury salt, may be another halide or a series of other groups including esters, nitrate, thiocyanide, or a sulphone. Stereoselective bromination of acetylenes to furnish... 

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