期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 27, 期 18, 页码 5648-5652出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202100084
关键词
alkynes; C− Si bond activation; rhodium; silane; synthetic methods
资金
- National Natural Science Foundation of China [21625104, 21971133]
- National Key Research and Development Program of China [2017YFA0505200]
The signature reactivity of silacyclobutane (SCB) is their cycloaddition reactions with various pi bonds. Recently, the first cases were disclosed where SCBs reacted with both C-sp2-H and C-sp3-H sigma bonds in an intramolecular fashion. It is reported that SCB is also an efficient reagent for C-sp-H bond silylation, with rhodium-catalyzed intermolecular reactions between SCBs and terminal alkynes producing a series of symmetrical and unsymmetrical tetraorganosilicons bearing a C-sp-Si functionality. Preliminary studies suggested that the reaction did not involve a cycloaddition pathway, but instead a direct activation of C-sp-H bonds.
The signature reactivity of silacyclobutane (SCB) is their cycloaddition reactions with various pi bonds. Recently, the first cases were disclosed where SCBs reacted with both C-sp2-H and C-sp3-H sigma bonds in an intramolecular fashion. Herein, it is reported that SCB is also an efficient reagent for C-sp-H bond silylation. Thus, rhodium-catalyzed intermolecular reactions between SCBs and terminal alkynes produced a series of symmetrical and unsymmetrical tetraorganosilicons bearing a C-sp-Si functionality. Preliminary studies suggested that the reaction did not involve a cycloaddition pathway, but instead a direct activation of C-sp-H bonds.
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