1: ethyl 4-nitrophenylsulfonylacetate With caesium carbonate in N,N-dimethyl-formamide T=60°C; modified Julia olefination; 0.5 h; 2: 4-chlorobenzaldehyde in N,N-dimethyl-formamide T=60°C; modified Julia olefination; 48 h;

1: ethyl 4-nitrophenylsulfonylacetate With caesium carbonate in N,N-dimethyl-formamide T=60°C; modified Julia olefination; 0.5 h; 2: 4-methoxy-benzaldehyde in N,N-dimethyl-formamide T=60°C; modified Julia olefination; 144 h;

1: ethyl 4-nitrophenylsulfonylacetate With caesium carbonate in N,N-dimethyl-formamide T=20°C; modified Julia olefination; 0.5 h; 2: 4-bromo-benzaldehyde in N,N-dimethyl-formamide T=20°C; modified Julia olefination; 96 h;

1: ethyl 4-nitrophenylsulfonylacetate With caesium carbonate in N,N-dimethyl-formamide T=20°C; modified Julia olefination; 0.5 h; 2: 4-nitrobenzaldehdye in N,N-dimethyl-formamide T=20°C; modified Julia olefination; 432 h;