Methanesulfenic acid chloride Chemische Eigenschaften,Einsatz,Produktion Methoden
Verwenden
Methanesulfenic acid chloride reacts as a pseudohalogen; reacts with carbanions and enolates to add the thiomethyl group α to the carbonyl; adds across the double bonds of alkenes and allenes; adds across triple bond of alkynes.
synthetische
To a flask containing 23.6 gm (0.25 mole) of dimethyl disulfide at - 1 5 ° to -20°C is slowly added dropwise 34 gm (0.25 mole) of freshly distilled sulfuryl chloride while keeping the temperature at -15° to -20°C. The reaction mixture is stirred for 1 hr, and then distilled to afford 37.1 gm (90%), b.p. 27-28°C (53-60 mm Hg); NMR, 2.91 ppm (singlet). The crude product can also be used without distillation since most of the material is product.
Lager
Methanesulfenic acid chloride undergoes decomposition within 1-2 d even when kept in a refrigerator; lasts less than 1 month when stored at -78 °C.
l?uterung methode
Methanesulfenic acid chloride can be used crude from the above preparations. If purification is necessary it must be distilled at low temperature, under vacuum, due to its instability.
Methanesulfenic acid chloride Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte