Boron Analogue of Vinylidene Dication Supported by Phosphines.
In the presence of a catalytic amount of heavier tetrylene dichlorides, an allenic diborene 1 undergoes a 1,3-hydrogen shift to afford a terminal diborene 2, which can be deemed a boron analogue of vinylidene dication stabilized by Lewis bases. X-ray diffraction analysis and computational studies re...
| Publicado en: | Journal of the American Chemical Society Vol. 140; no. 4; pp. 1255 - 1259 |
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| Autores principales: | , , , |
| Formato: | Artículo |
| Publicado: |
American Chemical Society
1/31/2018
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| Sumario: | In the presence of a catalytic amount of heavier tetrylene dichlorides, an allenic diborene 1 undergoes a 1,3-hydrogen shift to afford a terminal diborene 2, which can be deemed a boron analogue of vinylidene dication stabilized by Lewis bases. X-ray diffraction analysis and computational studies revealed that 2 involves a conjugative interaction between the C= C and B=B π-orbitals. The reaction of 2 with ZnBr[sub 2]afforded the corresponding isolable complex 3, in which two boon centers coordinate to the Zn atom asymmetrically. |
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