1: 6,7-dihydro-4H-thieno[3,2-c]pyran With dibromotriphenyl-phosphorane in acetonitrile 24 h; Heating / reflux; 2: methyl (S)-2-amino-2-(2-chlorophenyl)acetate hydrochloride With N-ethyl-N,N-diisopropylamine in acetonitrile 8.5 h; Heating / reflux; Product distribution / selectivity;