Related Experiment Video
Updated: May 21, 2026

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
Published on: March 20, 2017
Cobalt-promoted B-H and C-H activation: facile B-C coupling of carboranedithiolate and cyclopentadienyl
Rui Zhang1, Lin Zhu, Guifeng Liu
1State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210093, China.
Abstract:
We report the one-pot reactions of the 16e(-) half-sandwich complex CpCoS(2)C(2)B(10)H(10) (1), methyl propiolate, and 3e(-)-donor ligands, which lead to selective B-functionalization at carborane with cyclopentadienyl as a functional group at ambient temperature in good yields. Metal-promoted activations of both a B-H bond of the carborane and a C-H bond of the Cp unit take place sequentially in the cooperation of organic ligands. The reaction requires a 3e(-)-donor ligand and an activated alkyne and is therefore suitable for a broad range of substrates. This investigation provides a simple and efficient synthetic route to B-functionalized carborane derivatives.
Related Concept Videos
Cycloaddition Reactions: MO Requirements for Thermal Activation
Cycloaddition Reactions: Overview
Cycloaddition Reactions: MO Requirements for Photochemical Activation
Vicinal Diols via Reductive Coupling of Aldehydes or Ketones: Pinacol Coupling Overview
[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation

