Generation of ketenes by photolysis of naphtho[1,8-de]-1,3-dichalcogeninylidene 1-oxides
作者:Kenji Kobayashi、Satoshi Shinhara、Masaya Moriyama、Takayoshi Fujii、Ernst Horn、Akira Yabe、Naomichi Furukawa
DOI:10.1016/s0040-4039(99)00940-5
日期:1999.7
The photolysis of naphtho[1,8-de]-1,3-dichalcogeninylidene 1-oxide derivatives (4 and 5) at >290 nm generates ketenes together with naphtho[1,8-cd]-1,2-dichalcogenole, which were confirmed by the trapping experiments and the direct observation using IR spectroscopy. The generation of ketenes from the selenium compounds 5 is more effective than that from the sulfur analogs 4.
萘并[1,8 - de ] -1,3-二卤代亚苄基1-氧化物衍生物(4和5)在> 290 nm处发生光解,与萘并[1,8 - cd ] -1,2-二卤代庚烯一起生成烯酮。通过捕获实验和使用红外光谱法的直接观察得到了证实。由硒化合物5产生的烯酮比由硫类似物4产生的烯酮更有效。