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- W4285087373 abstract "The reaction of {N(tBu)Trip}SiBr3 (1, Trip = 2,4,6-iPr3C6H2) with 1.5 equiv of activated magnesium (Mg*) directly provides the amido-substituted cyclotrisilene 2 with one bromine substituent in 29% yield. In 2, negative hyperconjugation from the Si═Si π-bond into antibonding σ*-orbitals of the Si1–N1 and Si1–Br1 bonds occurs. This results in remarkably more shielded silicon atoms of the Si═Si bond compared to aryl- and silyl-substituted cyclotrisilenes. The reaction with the N-heterocyclic carbene NHCMe4 does not result in ring-opening but instead yields the NHC adduct 3. Nevertheless, cyclotrisilene 2 reacts with ethylene and dimethylacetylene in [2 + 2] cycloadditions to result in bicyclic saturated and unsaturated housanes 4 and 5, respectively." @default.
- W4285087373 created "2022-07-14" @default.
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- W4285087373 date "2022-07-13" @default.
- W4285087373 modified "2023-10-09" @default.
- W4285087373 title "Direct Formation and Reactivity of a Bromo- and Amido-Substituted Cyclotrisilene" @default.
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- W4285087373 doi "https://doi.org/10.1021/acs.organomet.2c00245" @default.
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