Synthesis of 3-Aryl-<i>ortho</i>-carboranes with Sensitive Functional Groups

A simple and efficient method was developed for the one-pot synthesis of 3-aryl derivatives of <i>ortho</i>-carborane with sensitive functional groups using 3-iodo-<i>ortho</i>-carborane and aryl zinc bromides that were generated in situ. A series of 3-aryl-<i>ortho<...

Full description

Bibliographic Details
Main Authors: Sergey A. Anufriev, Akim V. Shmal’ko, Kyrill Yu. Suponitsky, Igor B. Sivaev
Format: Article
Language:English
Published: MDPI AG 2021-12-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/26/23/7297
Description
Summary:A simple and efficient method was developed for the one-pot synthesis of 3-aryl derivatives of <i>ortho</i>-carborane with sensitive functional groups using 3-iodo-<i>ortho</i>-carborane and aryl zinc bromides that were generated in situ. A series of 3-aryl-<i>ortho</i>-carboranes, including those containing nitrile and ester groups, 3-RC<sub>6</sub>H<sub>4</sub>-1,2-C<sub>2</sub>B<sub>10</sub>H<sub>11</sub> (R = <i>p</i>-Me, <i>p</i>-NMe<sub>2</sub>, <i>p</i>-OCH<sub>2</sub>OMe, <i>p</i>-OMe, <i>o</i>-CN, <i>p</i>-CN, <i>o</i>-COOEt, <i>m</i>-COOEt, <i>p</i>-COOEt) was synthesized using this approach. The solid-state structures of 3-RC<sub>6</sub>H<sub>4</sub>-1,2-C<sub>2</sub>B<sub>10</sub>H<sub>11</sub> (R = <i>p</i>-OMe, <i>o</i>-CN, and <i>p</i>-CN) were determined by single crystal X-ray diffraction. The intramolecular hydrogen bonding involving the <i>ortho</i>-substituents of the aryl ring and the CH and BH groups of carborane was discussed.
ISSN:1420-3049