1: trichloroacetonitrile With tert.-butyl lithium; triphenylphosphine in tetrahydrofuran T=20°C; 2: 4-nitrobenzaldehdye With tert.-butyl lithium in tetrahydrofuran T=-78°C; Wittig reaction; 1 h;

T=220 - 265°C; P=2 - 5 Torr;

0.1 h; microwave irradiation;

1: Et3N / CH2Cl2 / 24 h / 20 °C 2: 86 percent / 0.1 h / microwave irradiation View Scheme

nitric acid; epoxysulfonyl fluoride T=-50°C;