Wang J, Wang D, Tong X. Synthesis of trisubstituted hydrazine
via MnO
2-promoted oxidative coupling of
N,
N-disubstituted hydrazine and boronic ester.
Org Biomol Chem 2021;
19:5762-5766. [PMID:
34126632 DOI:
10.1039/d1ob00929j]
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Abstract
A MnO2-promoted oxidative coupling process between N,N-disubstituted hydrazine and boronic ester is reported. A 1,1-diazene species is firstly generated upon oxidation of a hydrazine substrate in the presence of MnO2 which then interacts with boronic ester to form the key intermediate boron-ate complex, followed by migration from boron to nitrogen to form a new C-N bond. This new finding provides mild, scalable, and operationally straightforward access to trisubstituted hydrazine.
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