The chemistry of sulfines. 13. 2-Thiabicyclo[2.2.1]hept-5-ene and its S-oxides and 3-alkyl derivatives: sulfine and sulfene cyclopentadiene Diels-Alder adducts. Conversion of the cyclopentadiene-sulfine adducts into 2-oxa-3-thiabicyclo[3.3.0]oct-7-enes, novel bicyclic sultenes
The chemistry of sulfines. 13. 2-Thiabicyclo[2.2.1]hept-5-ene and its S-oxides and 3-alkyl derivatives: sulfine and sulfene cyclopentadiene Diels-Alder adducts. Conversion of the cyclopentadiene-sulfine adducts into 2-oxa-3-thiabicyclo[3.3.0]oct-7-enes, novel bicyclic sultenes
3,6‐Dihydro‐2H‐thiopyrans are important structural motifs both in organic synthesis and medicinal chemistry. A continuous flow‐process for the photochemical generation of thioaldehydes from phenacyl sulfides and the ensuing [4+2]‐cycloaddition with electron‐rich 1,3‐dienes was developed. The cycloadducts were obtained with excellent yields in short reaction times and much improved productivities as