Preparation and alkylation of substituted β-hydroxydithiocinnamic acids
作者:F.C.V. Larsson、S.-O. Lawesson
DOI:10.1016/s0040-4020(01)93857-8
日期:1972.1
been prepared. By use of so-called ion-pair extraction technique a general method has been found for the preparation of β-hydroxydithiocinnamic esters in high yields. From these esters both symmetrical and unsymmetrical ketenemercaptals have been synthesized, and in some cases thio-Claisen rearrangement and subsequent ring-closure reactions have been observed.
Magnesium catalyzed [3 + 3] heteroannulation of α-enolic dithioesters with MBH acetate: access to functionalized 3,4-dihydro-2<i>H</i>-thiopyrans
作者:Sonam Soni、Gaurav Shukla、Maya Shankar Singh
DOI:10.1039/d2ob01258h
日期:——
An efficient heteroannulation employing racemic Morita–Baylis–Hillman acetate and α-enolic dithioesters enabling the formation of dihydro-2H-thiopyrans is reported.