Formation and reactions of active five-membered phosphane/borane frustrated Lewis pair ring systems.
DONG, Shunxi; WANG, Long; WANG, Tongdao; DANILIUC, Constantin G.; BRINKKÖTTER, Melanie; ECKERT, Hellmut; KEHR, Gerald; ERKER, Gerhard.
DONG, Shunxi; WANG, Long; WANG, Tongdao; DANILIUC, Constantin G.; BRINKKÖTTER, Melanie; ECKERT, Hellmut; KEHR, Gerald; ERKER, Gerhard.
 Abstract: The reactive five-membered frustrated P/B Lewis pair 6a was generated from Tipp-P(vinyl)2 (Tipp: 2,4,6- triisopropylphenyl) by a series of anti-Markovnikov and Markovnikov hydroboration reactions. The in situ generated compound dimerized to give 7a under kinetic control and the dimer pair 8a/9a under thermodynamic control. The Mes*-P(vinyl)2 analogue (Mes*: 2,4,6-tri-tert-butylphenyl) reacts in a similar way, but in this case the thermodynamic dimers are observed at r.t. whereas the monomer 6b is the dominant species at 80 °C in solution. It is an active dihydrogen splitting reagent. The in situ generated monomeric five-membered P/B FLPs undergo addition reactions to various organic p-reagents. With benzaldehyde or phenylacetylene this gave the respective zwitterionic heteronorbornene or -norbornadiene type products, the latter with liberation of ethylene. | |
| Dalton Transactions |
| v. 47, n. 13, p. 4449-4454 - Ano: 2018 |
| Fator de Impacto: 4,029 |
| http://dx.doi.org/10.1039/c8dt00672e |  @article={002884946,author = {DONG, Shunxi; WANG, Long; WANG, Tongdao; DANILIUC, Constantin G.; BRINKKÖTTER, Melanie; ECKERT, Hellmut; KEHR, Gerald; ERKER, Gerhard.},title={Formation and reactions of active five-membered phosphane/borane frustrated Lewis pair ring systems},journal={Dalton Transactions},note={v. 47, n. 13, p. 4449-4454},year={2018}} |
