Syntheses of New Heterocycles Starting from Dicyanoacetates
摘要:
The reactions of 4-chloro-2-dialkylamino-6-oxo-6H-1,3-oxazine-5-carbonitriles (3) with C-, N- and S-nucleophiles are reported. The chloro atom can also be substituted in a Michaelis-Arbuzov reaction giving the corresponding 1,3-oxazinyl phosphinates and phosphinoxides.