Preparation of substituted 2-pyridones by thermal rearrangement of propargylic pseudoureas. Improvements in the 2-pyridone yields by variations of the pseudourea NR2 substituent
Preparation of substituted 2-pyridones by thermal rearrangement of propargylic pseudoureas. Improvements in the 2-pyridone yields by variations of the pseudourea NR2 substituent