METHOD FOR PREPARING TRI- AND TETRAORGANYLALKYNYL TIN Russian patent published in 2008 - IPC C07F7/22 

FIELD: chemistry of metalloorganic compounds, chemical technology.

SUBSTANCE: invention relates to a method for synthesis of acetylene organotin compounds of the general formula: R_4-nSn(C≡CR¹)_n wherein R means lower alkyl; R¹ means phenyl, hexinyl, trimethylsilylethynyl and others; n = 3 or 4. In aims for simplifying and safety of the method invention proposes carrying out synthesis of these compounds by interaction of alkyltrihalides tin or tetrahalides tin with 1-alkynes in the presence of secondary-tertiary aliphatic amine and zinc chloride in hydrocarbon solvent medium at temperature 20-70°C^{and in the mole ratio tetrahalide tin : 1-alkyne : zinc chloride : amine = 1:4:4.2:8.4, respectively, or in the mole ratio alkyltrichlorotin : 1-alkyne : zinc chloride : amine = 1:3:3.1:6.2, respectively, in yields 48-82%.}

EFFECT: improved method of synthesis.

2 cl, 8 ex