- Synthesis and Applications of Unquaternized C-Bound Boron Enolates
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A general and facile method to prepare unquaternized C-bound boron enolates by a ligand-controlled O-to-C isomerization is reported. Using this protocol, C-bound pinacolboron enolates have been isolated in pure form for the first time, and have been fully characterized by NMR spectroscopy and X-ray crystallography. In contrast to the general perception, such C-boron enolates are stable without coordinative saturation at the boron. Moreover, C-boron enolates present reactivities that are distinct from the O-boron enolates, and their applications in C-O and C-C bond formations are demonstrated.
- Ng, Elvis Wang Hei,Low, Kam-Hung,Chiu, Pauline
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supporting information
p. 3537 - 3541
(2018/03/21)
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- Hydroboration and Diboration of Internal Alkynes Catalyzed by a Well-Defined Low-Valent Cobalt Catalyst
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The use of a simple well-defined low-valent cobalt(I) catalyst [HCo(PMe 3) 4 ] capable of performing the regio- and stereoselective hydroboration of internal alkynes is reported. Extension to the diboration of internal alkynes is also related using the same reaction conditions.
- Ferrand, Laura,Lyu, Ye,Rivera-Hernández, Alejandro,Fallon, Brendan J.,Amatore, Muriel,Aubert, Corinne,Petit, Marc
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supporting information
p. 3895 - 3904
(2017/08/29)
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