Solid‐State Nuclear Magnetic Resonance Techniques for the Structural Characterization of Geminal Alane‐Phosphane Frustrated Lewis Pairs and Secondary Adducts

Autor: Hellmut Eckert, Damian Pleschka, Werner Uhl, Anna-Lena Wübker, Jonas Koppe, Michael Ryan Hansen, Lukas Keweloh, Henrik Bradtmüller

Publikováno v: Chemistry (Weinheim an Der Bergstrasse, Germany)
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

The first comprehensive solid‐state nuclear magnetic resonance (NMR) characterization of geminal alane‐phosphane frustrated Lewis pairs (Al/P FLPs) is reported. Their relevant NMR parameters (isotropic chemical shifts, direct and indirect 27Al‐

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b122165d8b07b9da8138e6a05c2941d
https://doi.org/10.1002/chem.202102113

3H‐Phosphaallenes Revisited: Facile Synthesis by Hydroalumination of Alkynylphosphines and β‐Elimination, Stability and Trapping of Transient Species by Coordination to Transition Metal Atoms

Autor: Jonas C. Tendyck, Werner Uhl, Hans Klöcker, Lukas Keweloh, Alexander Hepp

Publikováno v: Chemistry – A European Journal. 25:4793-4807

A facile method for the efficient synthesis of 3H-phosphaallenes, R-P=C=C(H)-R', is presented, which comprises treatment of dialkynylphosphines with dialkylaluminium hydrides (hydroalumination) and elimination of aluminium alkynides from intermediate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa3fae5781573ed05d2e7bed623f8925
https://doi.org/10.1002/chem.201806334

Reactivity of a P–H Functionalized Al/P‐Based Frustrated Lewis Pair – Hydrophosphination versus Classic Adduct Formation

Autor: Werner Uhl, Marcus Layh, Lukas Keweloh, Klaus Bergander, Frank Stegemann, Alexander Hepp

Publikováno v: Zeitschrift für anorganische und allgemeine Chemie. 643:1978-1990

The P-H functionalized Al/P-based frustrated Lewis pair (FLP) Mes(H)P-C[Al{CH(SiMe3)2}2]=C(H)-tBu (3) has the typical functionality of FLPs with Lewis acidic and basic centers in a single molecule and is able to transfer the P bound H atom to activat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3551b3b148ad63148ddb9c8188799983
https://doi.org/10.1002/zaac.201700340

Ein P-H-funktionalisiertes Al/P-basiertes frustriertes Lewis-Paar: Substrataktivierung und selektiver Wasserstofftransfer

Autor: Werner Uhl, M Sc. Hans Klöcker, Lukas Keweloh, Ernst-Ulrich Würthwein

Publikováno v: Angewandte Chemie. 128:3266-3269

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cec0f6d9adf9a6c44a1a5a709804c103
https://doi.org/10.1002/ange.201511048

A P-H functionalized Al/P-based frustrated Lewis pair - hydrophosphination of nitriles, ring opening with cyclopropenones and evidence of P[double bond, length as m-dash]C double bond formation

Autor: Lukas, Keweloh, Niklas, Aders, Alexander, Hepp, Damian, Pleschka, Ernst-Ulrich, Würthwein, Werner, Uhl

Publikováno v: Dalton transactions (Cambridge, England : 2003). 47(25)

Hydroalumination of R-P(H)-C[triple bond, length as m-dash]C-tBu with bulky H-Al[CH(SiMe3)2]2 afforded the new P-H functionalized Al/P-based frustrated Lewis pair R-P(H)-C[[double bond, length as m-dash]C(H)-tBu]-AlR2 [R = CH(SiMe3)2; FLP 7]. A weak

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::0f9359548e1fa0216b9e46f2afee0378
https://pubmed.ncbi.nlm.nih.gov/29893387