Regioselective N- versus P-Deprotonation of Aminophosphane Tungsten(0) Complexes
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Synthesis and Characterization of P–tert–Bu Substituted Aminophosphane Complexes
3.2. Regioselective Deprotonation of 1,2-Bifunctional Aminophosphane Complexes
3.3. Theoretical Investigations on the Mechanism
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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R | R’ | δ(31P)/ppm | 1JW,P/Hz | 1JP,H/Hz | yield/% | |
---|---|---|---|---|---|---|
3a | H | H | 45.7 | 239.0 | 333.5 | 56 |
3b | H | Me | 67.3 | 238.2 | 337.0 | 69 |
3c | H | Allyl | 61.6 | 239.0 | 339.4 | 80 |
3d | H | i-Pr | 55.5 | 238.5 | 334.0 | 69 |
3e | H | t-Bu | 37.1 | 239.9 | 340.6 | - |
3f | Me | Me | 91.0 | 239.5 | 358.8 | - |
δ(31P)/ppm | δ(31P)calc/ppm[a] | 1JW,P/Hz | 1JP,H/Hz | |
---|---|---|---|---|
3b | 67.3 | 67.3 | 238.2 | 337.0 |
3f | 91.0 | 86.9 | 239.5 | 358.8 |
Li-4b | 49.6 | 43.6 (4b−) 67.9 (Li-4b) [b] 69.5 (thf-Li-4b) [b] 72.6 (Li-12c4-4b) [b] | 189.0 | 310.4 |
K-4b | 48.5 | 52.3 (K-4b) [b] 62.4 (K-18c6-4b) [b] | 188.8 | 309 |
Li-5b | 89.9 (br) | 95.2 (5b−) 87.3 (thf-Li-12c4-5b) [b] 68.1 (Li-12c4-5b) [b] | - [c] | - |
K-5b | 89.1 | 86.3 (K-5b) [b] 77.1 (K-18c6-5b) [b] | 76.1 | - |
Li-6b | 55.0 | 78.3 (6b−) 72.6 (Li-12c4-6b) [b] | 196.5 | - |
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Terschüren, T.; Junker, P.; Schmer, A.; Espinosa Ferao, A.; Streubel, R. Regioselective N- versus P-Deprotonation of Aminophosphane Tungsten(0) Complexes. Organics 2022, 3, 161-172. https://doi.org/10.3390/org3030013
Terschüren T, Junker P, Schmer A, Espinosa Ferao A, Streubel R. Regioselective N- versus P-Deprotonation of Aminophosphane Tungsten(0) Complexes. Organics. 2022; 3(3):161-172. https://doi.org/10.3390/org3030013
Chicago/Turabian StyleTerschüren, Tatjana, Philip Junker, Alexander Schmer, Arturo Espinosa Ferao, and Rainer Streubel. 2022. "Regioselective N- versus P-Deprotonation of Aminophosphane Tungsten(0) Complexes" Organics 3, no. 3: 161-172. https://doi.org/10.3390/org3030013