1: 1,2-dichloro-1-(methylthio)ethene With n-butyllithium in tetrahydrofuran; hexane T=-78 - -10°C; 1.5 h; 2: With selenium in tetrahydrofuran; hexane cooling; 3: carbon diselenide; 3-thiocyanatopropionic acid methyl ester in tetrahydrofuran; hexane T=-100 - -90°C;

potassium hydroxide

(i) NaNH2, liq. NH3, (ii) sulfur, (iii) /BRN= 969135/; Multistep reaction;

1.) 2.45 GHz microwave discharge, p0(He) = 250 Pa, molar ratio He/C2H2 1000:1, 2.) cooled scavenger; Product distributionMechanism;