Sodium Azide → HCID 60152053, compound

Participants

Reaction Steps

A solution of NaNO2 (0.69 g, 10.0 mmol) in 10 mL water was added dropwise to a solution of 2-[4-(4-aminophenyl)-3-cyano-5,5-dimethyl-5H-furan-2-ylidene]malononitrile (1.4 g, 5.0 mmol) in 30 mL 4M HCl at 0-5° C. After stirring the mixture at this temperature for 45 min, a solution of NaN3 (0.53 g, 8.0 mmol) in 10 mL water was added dropwise to the mixture at the same temperature. Stirring was continued for 1 h below 5° C. and then at room temperature overnight. The precipitate formed was filtered off, washed with water and air-dried. The yellow product was recrystallized from dichloromethane/1-propanol. Yield: 1.25 g (82%). Mp: 184° C. IR (neat) 3056, 2990, 2235, 2122, 2091, 1601, 1568 cm−1; 1H NMR (400 MHz, DMSO) δ 7.90 (d, J=8.8 Hz, 2H), 7.26 (d, J=8.8 Hz, 2H), 1.86 (s, 6H); 13C NMR (100 MHz, CDCl3) δ 177.1, 176.6, 145.0, 130.61, 123.4, 120.30, 112.35, 111.4, 111.3, 101.60, 100.30, 55.20, 24.90; Anal. Calcd for C16H10N6O: C, 63.57; H, 3.33; N, 27.80. Found: C, 63.51H, 3.44; N, 27.20. UV-Vis (CH2Cl2): λmax=384 nm ε=2.9×104 L·mol−1 cm−1.

Provenance & Evidence