Oxazole

[288-42-6] C3H3NO (MW 69.07) 1S/C3H3NO/c1-2-5-3-4-1/h1-3H InChIKey = ZCQWOFVYLHDMMC-UHFFFAOYSA-N (2-aza Diels–Alder diene,2 precursor to N-formylformamide3) Physical Data: mp −87 to −84 °C; bp 69–70 °C; d 1.050 g cm−3; λmax 205 nm (ε 3900). Form Supplied in: colorless oil. Preparative Methods: two methods have been reported for the preparation of oxazole.4, 5 The more recent approach entails three steps (eqs 1 and 2) and an overall yield of 39%. (1) (2)