Boryl-Directed, Ir-Catalyzed C(sp<sup>3</sup>)–H Borylation of Alkylboronic Acids Leading to Site-Selective Synthesis of Polyborylalkanes
作者:Takeshi Yamamoto、Aoi Ishibashi、Michinori Suginome
DOI:10.1021/acs.orglett.9b02112
日期:2019.8.16
place at α-, β-, and γ-C–H bonds, giving polyborylated products including di-, tri-, tetra-, and even pentaborylalkanes. α-C–H borylation was generally found to be the preferred reaction of primary alkylboronic acid derivatives, whereas β- or γ-borylation also occurred if β- or γ-C–H bonds were located on the methyl group.
吡唑基苯胺是在Ir催化的C(sp 3)–H硼酸酯化反应中连接到烷基硼酸硼原子上的临时导向基团。该反应在α-,β-和γ-C–H键处发生,得到多硼酸酯化产物,包括二,三,四,甚至五碳硼烷。通常发现,α-C–H硼酸酯化是伯烷基硼酸衍生物的首选反应,而如果β-或γ-C–H键位于甲基上,则β-或γ-硼酸酯化也会发生。