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。
Pd-catalyzed allylative dearomatisation using Grignard reagents
作者:Cosimo Boldrini、Syuzanna R. Harutyunyan
DOI:10.1039/d1cc05609c
日期:——
naphthyl halides is shown to be feasible by employing Grignard reagents. The high reactivity of the nucleophile allows for fast reactions and low catalyst loading, while a plethora of successfully substituted compounds illustrate the broad scope. Five membered heteroaromatic compounds are also demonstrated to be reactive under similar conditions.
Regioselective control using a catalyst switch in the reaction of diarylmethyl chlorides with allyltributylstannane
作者:Bo Peng、Xiujuan Feng、Xin Zhang、Liyun Ji、Ming Bao
DOI:10.1016/j.tet.2010.06.019
日期:2010.8
is described. The reaction pathway (allylativedearomatization vs cross-coupling) can be easily controlled using different catalysts. When reactions are performed in the presence of Pd2(dba)3 and PPh3, allylativedearomatization proceeds to provide satisfactory yield of the desired products. However, when Cy3P·HBF4 is employed as a catalyst instead of palladium, a Stille-type cross-coupling reaction
Palladium-Catalyzed sp<sup>2</sup>–sp<sup>3</sup> Coupling of Chloromethylarenes with Allyltrimethoxysilane: Synthesis of Allyl Arenes
作者:Sheng Zhang、Jinfang Cai、Yoshinori Yamamoto、Ming Bao
DOI:10.1021/acs.joc.7b00678
日期:2017.6.2
Palladium-catalyzed remote sp2–sp3 coupling reaction of chloromethylarenes with allyltrimethoxysilane is described in this work. The allylation reaction regioselectively occurred on the para-positions of 1-(chloromethyl)naphthalenes and benzyl chlorides to form new C(sp2)–C(sp3) bonds. The reaction proceeds smoothly under mild conditions to produce allyl arenes in moderate to excellent yields.