Synthesis of Heterodinuclear Hemisalen Complexes on a Hexaarylbenzene Scaffold and their Application for the Cross-Pinacol Coupling Reaction
作者:Akihiro Miyasaka、Toru Amaya、Toshikazu Hirao
DOI:10.1002/chem.201303946
日期:2014.2.3
decarbonylation reaction, followed by condensation of dialdehyde 3cis with various aminophenols. The influence of the substituents on the ligands on the pinacol couplingreaction was investigated. As a result, the reductive couplingreaction between aliphatic and aromaticaldehydes by using a catalytic amount of 1cis in the presence of Me3SiCl and Zn provided the corresponding cross‐coupled 1,2‐diol
Regioselective Diels–Alder cycloadditions and other reactions of 4,5-, 5,6-, and 6,7-indole arynes
作者:Neil Brown、Diheng Luo、David Vander Velde、Shaorong Yang、Allen Brassfield、Keith R. Buszek
DOI:10.1016/j.tetlet.2008.10.086
日期:2009.1
of indole arynes (indolynes) at all three benzenoid positions was examined. Cycloadditions with the 4,5-and 5,6-indolynes, derived via metal–halogen exchange from the corresponding o-dibromo indoles, showed essentially no selectivity with 2-t-butylfuran. In contrast, the 6,7-indolyne displayed virtually complete preference for the more sterically congested cycloadduct. This same cycloadduct undergoes