Expanding the Scope of Palladium-Catalyzed B - N Cross-Coupling Chemistry in Carboranes.
Expanding the Scope of Palladium-Catalyzed B - N Cross-Coupling Chemistry in Carboranes.
复制标题
扩大了卡伯兰氏菌的钯催化的B-N交叉偶联化学范围。
DOI:
10.1021/acs.organomet.0c00576
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发表时间:
2020-12-14
期刊:
影响因子:
2.8
通讯作者:
Spokoyny AM
中科院分区:
文献类型:
--
作者:
Mu X;Hopp M;Dziedzic RM;Waddington MA;Rheingold AL;Sletten EM;Axtell JC;Spokoyny AM
Over the past several years, a number of strategies for the functionalization of dicarba-closo-dodecaboranes (carboranes) have emerged. Despite these developments, B – N bond formation on the carborane scaffold remains a challenge due to the propensity of strong nucleophiles to partially deboronate the parent closo-carborane cluster into the corresponding nido form. Here we show that azide, sulfonamide, cyanate, and phosphoramidate nucleophiles can be straightforwardly cross-coupled onto the B(9) vertices of the o- and m-carborane core from readily accessible precursors without significant deboronation by-products, laying the groundwork for further study into the utility and properties of these new B-aminated carborane species. We further showcase select reactivity of the installed functional groups highlighting some unique features stemming from the combination of the electron-donating B(9) position and the large steric profile of the B-connected carborane substituent.
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