Pd-Catalyzed Dearomative Allylation of Benzyl Phosphates
作者:Masaaki Komatsuda、Kei Muto、Junichiro Yamaguchi
DOI:10.1021/acs.orglett.8b01807
日期:2018.7.20
Dearomative C–C bond formation of benzyl phosphates has been developed. In the presence of a palladium/PAr3 catalyst, benzyl phosphates reacted with allyl borates to generate the allylated product in a dearomative fashion. The resulting dearomatized molecules were successfully derivatized by Simmons–Smith cyclopropanation and oxidation.
已经开发出苄基磷酸的脱芳香族C–C键形成。在钯/ PAr 3催化剂的存在下,磷酸苄酯与硼酸烯丙酯反应,以脱芳族方式生成烯丙基化产物。产生的脱芳烃分子已通过Simmons-Smith环丙烷化和氧化作用成功衍生。
Palladium-Catalyzed Regioselective Allylation of Chloromethyl(hetero)arenes with Allyl Pinacolborate
作者:Sheng Zhang、Aziz Ullah、Yoshinori Yamamoto、Ming Bao
DOI:10.1002/adsc.201700350
日期:2017.8.17
The palladium-catalyzed regioselective allylation reaction between chloromethyl(hetero)arenes and allyl pinacolborate is reported in this work. Chloromethylarenes smoothly reacted with allyl pinacolborate, producing para-allylated dearomatization products or para-allylated arenes in satisfactory to good yields. 2-(Chloromethyl)thiophenes and 2-(chloromethyl)furans bearing substituents on the 5-positions
Regioselective coupling of benzyl chlorides with allyl and allenyl boronates catalysed by a bidentate phosphine ligand/palladium catalyst
作者:Sheng Zhang、Junchao Yin、Ziyang Wang、Yang Li、Yukang Fu、Ji Ma、Zhilong Xie、Ming Bao
DOI:10.1039/d3cc00279a
日期:——
A palladium-catalysed aromative benzylic allylation and allenylation of benzyl chlorides with allyl and allenyl pinacolborates is described for the first time. The reactions proceed smoothly in the presence of a bidentate phosphine ligand to afford normal cross-coupling products in good yields. This novel synthetic procedure exhibits good tolerance for various electron-withdrawing and -donating functional
A dearomative C4-allylation of benzyl ammoniums with allyltributylstannane by a palladium catalysis is described. A triarylphosphine-ligated palladium catalyst, which is capable of cleaving benzyli...