Chemistry of dihydro-1,3-oxazines. XXI. 1,4-Addition of organometallics to 2-alkenyldihydro-1,3-oxazines. Synthesis of .alpha.-substituted aldehydes and ketones
Chemistry of dihydro-1,3-oxazines. XXI. 1,4-Addition of organometallics to 2-alkenyldihydro-1,3-oxazines. Synthesis of .alpha.-substituted aldehydes and ketones