1: With tris-(dibenzylideneacetone)dipalladium(0); trifuran-2-yl-phosphane in N,N-dimethyl-formamide T=20 - 65°C; 16.33 h; 2: With potassium fluoride in diethyl ether; water; N,N-dimethyl-formamide T=20°C; 1 h;

1: With ozone in methanol; chloroform T=-78°C; 0.55 h; 2: With dimethylsulfide in methanol; chloroform T=-78 - 20°C;