FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing S,S'-bis([N,N-dimethyl]methyl)alkanedithiols of general formula (I): I which involves reaction of alkanedithiol with N,N,N,N-tetramethylmethanediamine in the presence of a samarium chloride crystalline hydrate catalyst (SmCl3-6H2O), taken in molar ratio α,ω-dithiol: N,N,N,N-tetramethylmethanedithiol: SmCl3-6H2O = 10:(20-24):(0.3-0.7), at room temperature (20°C) and atmospheric pressure in a medium of chloroform as a solvent for 3-5 hours.
EFFECT: method of producing compositions which can be used as novel modified agents for protecting plants from root rot and agents which increase crop yield.
1 cl, 1 tbl, 1 ex
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Authors
Dates
2012-10-20—Published
2010-09-07—Filed