Additions of organometallics to enethiolizable β-oxodithioesters - potential synthetic uses.
作者:Serge Masson、André Thuillier
DOI:10.1016/s0040-4039(00)88354-9
日期:1982.1
Enethiolizable β-oxidithioesters allowing the succesive formation of carboncarbon bonds at the carbonyl and at the thiocarbonyl sites, are precursors of α-unsaturated dithioesters and can be used as a3d1 or a3a1 synthons.
允许在羰基和硫代羰基位置成功形成碳碳键的可乙氧基化的β-氧化硫代酯是α-不饱和二硫代酯的前体,可以用作3 d 1或3 a 1合成子。
Reactions of α-Hydroxyketene Dithioacetals with Lawesson’s Reagent: An Efficient Method for the Synthesis of α,β-Unsaturated Dithioesters
作者:C. V. Asokan、Satheesh K. Nair、Ann Maria Jose
DOI:10.1055/s-2005-865301
日期:——
The α-hydroxyketene dithioacetals 2 and 5, obtained from α-oxoketene dithioacetals by the 1,2-reduction or the 1,2-addition of carbon nucleophiles, on treatment with Lawesson'sreagent afforded α,β-unsaturated dithioesters 3 and 6 in good yields.
Access to diethylenic dithioesters by thio-claisen rearrangement
作者:Patrick Metzner、Thi Nhan Pham、Jean Vialle
DOI:10.1016/s0040-4020(01)87619-5
日期:1986.1
dithioacetals leads to diethylenic dithioesters under mild conditions (from 20°C to 100°C). The thio-Claisen transposition is thus confirmed as a facile sigmatropic shift. It is also demonstrated that the reverse reaction (retro thio-Claisen) proceeds simultaneously. The equilibrium mixture of ketene dithioacetal and dithioester ie usually in the range of 70 : 30 to 95 : 5. Thiophilic addition to these diunsaturated