摘要:
In the manufacture of monomethyl-tin trichloride by disproportionation of tin tetrachloride with dimethyl-tin dichloride, high yields are achieved by employing phosphines, arsines and stibines or onium compounds of elements of the fifth main group in the periodic system as the catalyst, optionally together with a co-catalyst.
摘要:
Complexes composed of alkylphosphines or of alkylphosphonium chlorides and tin tetrachloride are good catalysts for the preparation of dimethyl-tin dichloride from tin and methyl chloride in the presence of sulphones and carbonates as solvents.
摘要:
A process is described for the production of organotin halides from metallic tin and organic halides and in the presence of catalysts in sulphones as the reaction medium, whereby there are obtained, in addition to high yields, also high reaction rates.