Photocyclisations of 1,4-diarylbut-1-en-3-ynes. Part III. Scope and limitations of the reaction
作者:Alois H. A. Tinnemans、Wim H. Laarhoven
DOI:10.1039/p29760001115
日期:——
The photoreactivity of a large series of diarylbutenynes has been studied in order to establish the scope of this photocyclisationreaction. The conditions for an optimal yield of photocyclisation products are discussed. On addition of iodine to the butenyne solution, irradiation gives rise to iodo-derivatives of the normal cyclisation products, whereas in the presence of iodine and with benzene as