Custom-Made Pyrene Photocatalyst-Promoted Desulfonylation of Arylethenyl Sulfones Using Green-Light-Emitting Diodes
作者:Akihiro Orita、Hikaru Watanabe、Kazuki Nakajima、Kento Ekuni、Ryota Edagawa、Yuta Akagi、Yasuhiro Okuda、Kan Wakamatsu
DOI:10.1055/s-0040-1706025
日期:2021.9
3,6,8-tetrabromopyrene with 4-[(–)-β-citronellyloxy]phenylethyne was employed to synthesize 1,3,6,8-tetra[4-(citronellyloxy)phenylethynyl]pyrene. The pyrene derivative catalyzed the reductive desulfonylation of ethenyl sulfones via visible-light irradiation (514 nm green light-emitting diodes) in the presence of i-Pr2NEt. The β-citronellyloxy groups provided the sufficient solubility to the highly
1,3,6,8-四溴py与4-[(-)-β-香茅基氧基]苯基乙炔的Sonogashira偶联用于合成1,3,6,8-四[4-(香茅基氧基)苯基乙炔基]]。i衍生物在i -Pr 2 NEt存在下,通过可见光照射(514 nm绿色发光二极管)催化乙烯基砜的还原性脱磺酰化反应。β-香柠檬烯氧基为高度π-膨胀的pyr催化剂提供了足够的溶解度,并且它们的极性氧官能团使得可以通过柱色谱法容易地从产物中分离出催化剂。