One-Pot Synthesis of Substituted Benzo[<i>b</i>]furans and Indoles from Dichlorophenols/Dichloroanilines Using a Palladium–Dihydroxyterphenylphosphine Catalyst
作者:Miyuki Yamaguchi、Tomoyo Akiyama、Hirohisa Sasou、Haruka Katsumata、Kei Manabe
DOI:10.1021/acs.joc.6b00824
日期:2016.7.1
Sonogashira coupling of dichlorophenols and terminal alkynes, followed by cyclization and Suzuki–Miyaura coupling in one pot, using a palladium–dihydroxyterphenylphosphine (Cy-DHTP) catalyst. The use of substoichiometric amounts of tetrabutylammonium chloride was effective in accelerating the Suzuki–Miyaura coupling. This protocol was also successfully applied to the one-pot synthesis of disubstituted
二取代的苯并[ b ]呋喃是通过二氯苯酚和末端炔的邻位选择性Sonogashira偶联反应,然后使用钯-二羟基叔苯基膦(Cy-DHTP)催化剂在一个罐中进行环化和Suzuki-Miyaura偶联反应而合成的。亚化学计量的四丁基氯化铵的使用有效地加速了Suzuki-Miyaura偶联。该方案也成功地用于从二氯苯胺衍生物的一锅法合成二取代的吲哚。