Thermal rearrangement of alkyl O-vinylcarbohydroximates to 2-alkyloxazoles
Abstract
Alkyl O-vinylcarbohydroximates, lactoxime O-vinyl ethers, and sugar lactoxime O-vinyl ethers undergo a novel thermal rearrangement to afford the corresponding 2-alkyloxazoles, 2-(ω-hydroxyalkyl)oxazoles, and oxazoles bearing a sugar moiety, respectively. This rearrangement can also occur under photochemical conditions.