Pictet-Spengler Condensation of<i>N,N</i>-Dimethylsulfamoyl-β-Phenethylamines with Methylthioacetic Acid Ethyl Ester. New Synthesis of Ethyl 1,2,3,4-Tetrahydroisoquinoline-1-Carboxylates
The reaction of N,N-dimethylsulfamoyl-β-phenethylamines with methylthioacetic acid ethylester using phenyliodine(III) bis(trifluoroacetate) gives moderate to good yields of the corresponding ethyl 1,2,3,4-tetrahydroisoquinoline-1-carboxylates.