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. Author manuscript; available in PMC: 2021 Dec 9.
Published in final edited form as: J Am Chem Soc. 2020 Nov 30;142(49):20513–20518. doi: 10.1021/jacs.0c09361

Figure 2.

Figure 2.

(A) Synthetic route to 9-amino-ortho-carborane (4) through 9-azido-ortho-carborane (2). (B, C) Treatment of 4 and 6 with Me-I affords trimethylated derivatives 5,7. (D) Formation of salt 8. (E) Single crystal X-ray diffraction of 4 (chloride counterion and cage-based hydrogens removed for clarity).