The reductive coupling of chlorotris(diorganylamino)silanes 1 with chlorotrimethylsilane by the action of lithium in THF provides for steric reasons, an easy access to unsymmetrical aminosubstituted disilanes (R 2 N) 3 Si-SiMe 3 3. Similarly, crosscoupling to give pentakis(diethylamino)disilane 4 is
Synthesis and structural studies of symmetric and unsymmetric adamantylmethyleneazines
✍ Scribed by Dionisia Sanz; María Alejandra Ponce; Rosa María Claramunt; Cristina Fernández-Castaño; Concepción Foces-Foces; José Elguero
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 195 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0894-3230
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✦ Synopsis
The synthesis and spectroscopic properties ( 1 H, C and 15 N NMR, in solution and in the solid state) of six new 1-adamantylmethylene azines are reported. The crystal and molecular structures of 1-adamantylcarbaldehyde azine and 1-adamantyl methyl ketone azine, which exist in the solid state in the E,E-configuration, were determined by x-ray analysis. The geometric characteristics of the azine central bridge and the preferred configuration with regard to it (E,E, E,Z or Z,Z) were investigated by means of the crystallographic data retrieved from the Cambridge Structural Database and ab initio quantum chemical calculations.
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Dedicated to Prof. William E. McEwen on the occasion of his seventy-fifth birthday and to celebrate his many contributions to the field of heteroatom chemistry. \*To whom correspondence should be addressed. †Taken, in part, from the Master's thesis of S.-Y. Liou (University of Alabama in Huntsville,
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