| abstract |
Acryl-oxy-methane-sulphonic acids and salts of general formulae RCOCH2SO3Na (II) and RCO2CH2SO3H (III) are prepd. from cpd. of general formula RCOCl and CH2O (I) in aq. medium and at 15-25 deg.C by using 1.25-1.50 mol (based on (1)) sodium-sulphite or a mixt. of sodium-hydrogen sulphite and sodium hydroxide and 1.25-1.50 mol formaldehyde. Opt. sulphonates (II) are acidified and sulphonic acids (III) are neutralised with a N contg. base (ammonia, alkanol-amines). R: in (I), (II), and (III) is a 7-17C satd. or unsatd. hydrocarbon. |