General and highly active catalyst for mono and double Hiyama coupling reactions of unreactive aryl chlorides in water
作者:Dong-Hwan Lee、Ji-Young Jung、Myung-Jong Jin
DOI:10.1039/c0cc03535a
日期:——
A new beta-diketiminatophosphane Pd catalyst was found to be highly effective in the mono and double Hiyama couplingreactions of unactivated arylchlorides in water.
Studies of microwave-enhanced Suzuki–Miyaura vinylation of electron-rich sterically hindered substrates utilizing potassium vinyltrifluoroborate
作者:Matthew D. Brooker、Stefan M. Cooper、Dena R. Hodges、Rhiannon R. Carter、Justin K. Wyatt
DOI:10.1016/j.tetlet.2010.10.087
日期:2010.12
The Suzuki–Miyauracross-coupling of sterically hindered and electron-rich ortho,ortho′-substituted aryl halides with potassium vinyltrifluoroborate utilizing microwaveirradiation has been conducted while adjusting solvent ratio, irradiation time, and catalyst loading to find optimal conditions. Coupling of benzyl 3,5-bis(benzyloxy)-4-bromobenzoate leads to a mixture of the desired styrene derivative
Boryl-group-assisted reductive C−C bondcleavage of 1,2-diaryl-1,2-diborylethanes is described. The substrates, 1,2-diaryl-1,2-diborylethanes, are synthesized by reductive diboration of stilbenes. The combination of these reactions, reductive diboration and reductivecleavage provides a new strategy for reductive C=C double bondcleavage.
描述了硼基基团辅助的 1,2-二芳基-1,2-二硼基乙烷的还原性 CC 键断裂。底物 1,2-二芳基-1,2-二硼基乙烷是通过二苯乙烯的还原二硼化合成的。这些反应、还原二硼化和还原裂解的组合为还原C=C双键裂解提供了新的策略。