The nrzlm-functionalizcd 'arylphenylcyclopropenones 3 are preparcd via thc West method und their spectrixscupic anti chcmical propcrties arc reported. Thc «syclopixuacnorics 3 undergo Ihcrmal transformatioii to givc heterocycles 7, 8, I2. tilwtticticlnically they decarbtmylated to givc alkynes 9 as main taroducts.'I 'he structurcs of the hetcroeyclcs 7, 8. 12 arc proven by mcans nl 'spectrtvsctipic data und by indcpcndent synthesis. A ...
