© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim A silanone substituted by bulky amino and phosphonium bora-ylide substituents has been isolated in crystalline form. Thanks to the exceptionally strong electron-donating phosphonium bora-ylide substituent, the lifetime at room temperature of the silanone is dramatically extended (t1/2=4 days) compared to the related (amino)(phosphonium ylide)silanone VI (t1/2=5 h), allowing easier manipulation and its use as precursor of new valuable silicon compounds. The interaction of silanone with a weak Lewis acid such as MgBr2 increases further its stability (no degradation after 3 weeks at room temperature).
- N-heterocyclic carbenes
Rosas-Sánchez, A., Alvarado-Beltran, I., Baceiredo, A., Saffon-Merceron, N., Massou, S., Hashizume, D., Branchadell, V., & Kato, T. (2017). Cyclic (Amino)(Phosphonium Bora-Ylide)Silanone: A Remarkable Room-Temperature-Persistent Silanone. Angewandte Chemie - International Edition, 56(50), 15916-15920. https://doi.org/10.1002/anie.201710358