Photoreactions of 2-(furan-2-yl)-3-hydroxy-4H-chromen-4-one and 3-hydroxy-2-(thiophene-2-yl)-4H-chromen-4-one using cyclohexane and acetonitrile as solvents
作者:Kulvir Kaur、Ranbir Kaur、Jyoti Tomar、Manisha Bansal
DOI:10.1039/c7pp00106a
日期:2017.8
chromenones was carried out at their longest absorption band (∼360 nm) using cyclohexane (CH) and acetonitrile (ACN) as solvents, in both aerated and de-aerated solutions. Different dimeric photoproducts were formed with both chromenones in aerated solutions. On photolysing 2-(furan-2-yl)-3-hydroxy-4H-chromen-4-one (FHC) in aerated cyclohexane, 2-(furan-2-yl)-2-[2-(furan-2yl)-4-oxo-4H-chromen-3-yl]oxy}-2H-chromene-3
在充气和脱气溶液中,使用环己烷(CH)和乙腈(ACN)作为溶剂,在最长的吸收带(〜360 nm)处进行标题标题的色农酮的光解。在充气溶液中,两种色酮均形成了不同的二聚光产物。在充气环己烷中光解2-(呋喃-2-基)-3-羟基-4 H-铬-4-(FHC),2-(呋喃-2-基)-2-[2-(呋喃-形成2yl)-4-oxo-4 H -chromen-3-yl] oxy} -2 H -chromene-3,4-dione(脱氢二聚体),并在光解过程中形成3-hydroxy-2-(thiophene-2- yl)-4 H -chromen-4-one(THC)在充气的ACN中,分离并鉴定了另一种二聚体产物。除了在两种情况下的二聚体产物外,还用ACN中的FHC和CH中的THC检测到了相应的3-芳基-3-羟基-1,2-茚满二酮。另一方面,在脱气溶液中,仅检测到相应的1,2-茚满二酮。在两种溶剂中也都用F