Ring Transformation of 2-Furylcarbamates to 5-Hydroxy-3-pyrrolin-2-ones
N-Ethoxycarbonyl- and N-benzyloxycarbonyl-5-hydroxy-5-methoxyalkylpyrrolinones (6a-c) and (7a-c) together with minor products 8-10 were obtained from the photooxidation or autoxidation of corresponding 2-furylcarbamates (4a-c) and (5a-c).The catalytic hyd