Ad. Ulendeyeva et al., THIOMETHYLATION OF BUTANONE BY FORMALDEHYDE AND A MIXTURE OF SULFUR-CONTAINING COMPONENTS OF SULFIDE-ALKALINE SOLUTIONS, Petroleum chemistry, 36(3), 1996, pp. 268-275
Citations number
8
Categorie Soggetti
Energy & Fuels","Engineering, Chemical","Engineering, Petroleum
An investigation has been made of the group and individual composition
of the products of thiomethylation of butanone by formaldehyde and a
mixture of sodium sulphide, hydrosulphide and mercaptides of sulphide-
alkaline solutions. It has been established that the reaction products
are a mixture of keto- and diketosulphides of aliphatic and cyclic st
ructure, the ratio of which depends on the qualitative and quantitativ
e composition of the sulphur compounds present in the sulphide-alkalin
e solutions. The amount of cyclic structures increases with increasing
temperature (up to 50-80 degrees C) and increasing reaction time. In
concentrates of ketosulphides, 3,7-dimethyl-5-thianonane-2,8-dione (I)
, 3-methyl-5-thiahexan-2-one (II), 3-methyl-5-thiaheptan-2-one (III),
3,6-dimethyl-5-thiaheptan-2-one (IV), 3-methylthiacyclohexan-4-one (V)
and 1,4,5-trimethyl-7-thiabicyclo[2,2,2]octan-2-one (VI) and cis- and
trans-3,4,6-trimethyl-2-cyclohexen-1-ones (VII) have been identified,
the content of compound I reaching 24.5-38.8 wt.%. (C) 1996 Elsevier
Science Ltd.