Reduction of CO2 to methanol using aluminum ester FLPs

Antiaromaticity-Promoted Activation of Dihydrogen with Borole Fused Cyclooctatetraene Frustrated Lewis Pairs: A Density Functional Theory Study

“…Because of sterically induced effect, one cannot quench each other to form an adduct. Due to their remarkable reactivity, FLPs can be widely used as a powerful means to activate small molecules and various bonds such as hydrogen, carbon dioxide, alkyne, Si–H bonds, C–H bonds, and so on. For instance, Fontaine et al exploited the intramolecular B/N-FLPs (1-TMP-2-BH 2 -C 6 H 4 ) as a catalyst to activate sp 2 -hybridized C–H bonds in a variety of aromatic systems such as furan and pyrrole…”

Aluminum Complexes Supported by Ph2P‐Functionalized Anilido‐Pyridine Ligand Platform: Synthesis, Structure and Evaluation as Frustrated Lewis Pairs

“…However, no changes in the pattern of the signals in the 1 H and 31 P NMR spectra of 4 a-Al were observed also even upon heating (up to 60 °C) suggesting a complete inactivity towards H 2 . Hydrosilylation of CO 2 [35,36,37,38,39,40] with Et 3 SiH in the presence of 4 a-Al was attempted under regular conditions ([Al] 0 = 5 mol%, C 6 D 5 Br, 80 °C, 1 or 6 bar CO 2 , n(CO 2 ) 0 /n(Si-H) 0 = 1 : 1 or 6 : 1, respectively), [33] however, failed to afford any product in detectable amounts. A combination of 4 a-Al with B(C 6 F 5 ) 3 ([Al] 0 = [B] 0 = 5 mol %,) resulted only in a slow conversion towards H 2 C(OSiEt 3 ) 2 after 24 hours (TOF of 0.25 h À 1 ).…”

Advances in CO2 activation by frustrated Lewis pairs: from stoichiometric to catalytic reactions

“…103 Studying FLPs comprised of phosphines and aluminium esters, Smythe et al , showed that the ratio of mono-to bis-bound adduct varies with Lewis acidity. 104…”

“…103 Studying FLPs comprised of phosphines and aluminium esters, Smythe et al, showed that the ratio of mono-to bis-bound adduct varies with Lewis acidity. 104 Aer exposure to 1 atm of CO 2 , Al(O-C 6 H 2 Cl 3 ) 3 bound CO 2 in a predominantly mono fashion (ca. 95% mono), whereas the greater Lewis acidity of Al(OC 6 Cl 5 ) 3 (ca.…”