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Please login to access the full content or check if you have access via4.4.21.12 Method 12: Preparation and Reaction of Stable Cyclic Bis(amino)silylenes
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Tamao, K.; Kawachi, A., Science of Synthesis, (2002) 4, 470.
Several kinds of bis(amino)silylenes having cyclic skeletons can be prepared by reduction of the corresponding bis(amino)dichlorosilanes with potassium (Scheme 29).[52,53] These silylenes are thermally stable and may be isolated under an inert gas atmosphere. Bis(diisopropylamino)silylene is generated photochemically in hexane at room temperature.[54,55]
Meeeee 88 Meeeeeeeeee eee Meeeeeee ee e Meeeee Meeeee Meeeeeee[88,88]
Reaction of the bis(amino)silylene 67 with trityl azide results in the rapid evolution of nitrogen and the clean formation of a silanimine 68, which is stabilized by a tetrahydrofuran molecule coordinated to silicon (Scheme 29).[56]
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8,8-Me-eeee-eeeee-8,8-eeeee-8-eeeeeeeeeeeee-8-ee-8-eeeeeee (88):[88]
M eeeeeee ee 8,8-ee-eeee-eeeee-8,8-eeeeeeee-8,8-eeeee-8-eeeeeeeeeeeee-8-eee (88; 88.8 e, 888 eeee) eee M (888 eeee, 88% eeeeee) ee MMM (888 eM) eee eeeeeeee eeeee eeeee eee 8 e. Mee eeeeee eeeeeee eee eeee eeeeeeee eeeeeee e eeeeee-eeeeeeee eeeee eeee, eee eee eeeeee eeee eeeeee eeee eeeeeee (8 × 888 eM). Meeee eeeeeee ee eee eeeeeeee eeee eee eeeeeeee, eee eeeeee eee(eeeee)eeeeeeee 88 eee eeeeeeee ee eeeeeeeeeeee; eeeee: 88 e (88%); ee 88–88°M/8.8 Meee.
M-(8,8-Me-eeee-eeeee--8,8-eeeee-8-eeeeeeeeeeeee-8-ee-8-eeeeeee)-M-eeeeeeeeeee (88):[88]
M eeee ee MeM8 (8.88 e, 8.8 eeee) ee MMM (88 eM) eee eeeee ee e eeee ee eee eee(eeeee)eeeeeeee 88 (8.88 e, 8.8 eeee) ee MMM (88 eM) ee −88°M eeee e eeeeee ee 8 eee. Meeee eeeeeeee ee ee eee 88 e eee eeeeeee ee eee eeeeeee, eee eeeee eeeeeeee eeeeeee eee eeeeeeeeeee ee eeeeee (888 eM). Meee eeee eee eeeeee ee −88°M ee eeee 88; eeeee: 8.88 e (88%).
References
[52] | Meee, M.; Meeeee, M.; Meeeeee, M.; Meee, M.; Meeeeeee, M. M.; Meeee, M. M.; Meeeeee, M.; Meeeee, M.; Meeeeee, M., M. Me. Meee. Mee., (8888) 888, 8888. |
[53] | Meeeeee, M.; Meeeeee, M. M.; Meeeeeee, M.; Meeee, M.; Meäeee, M., M. Meee. Mee., Meee. Meeeee., (8888), 8888. |
[54] | Meeeeeee, M.; Meeeeee, M.; Meeeeee, M.; Meee, M., Meee. Meee. Mee. Mee., (8888) 88, 888. |
[55] | Meeeeee, M.; Meeeeeee, M.; Meee, M., M. Me. Meee. Mee., (8888) 888, 8888. |
[56] | Meee, M.; Meeeeee, M. M.; Meee, M., M. Me. Meee. Mee., (8888) 888, 88888. |