Results 161 to 170 of about 89,156 (285)

Surface Protected Organozirconium Catalyzes C–H Alumination of Saturated Hydrocarbons

Angewandte Chemie International Edition, Accepted Article.
Surface grafted organozirconium‐catalyzes C–H/Et–Al exchange reactions, involving saturated hydrocarbons and AlEt3, to afford organoaluminum compounds and ethane. The Zr(OtBu)3@SiO2‐Al2O3‐700 (1) catalyst contains monopodal ≡SiO–Zr(OtBu)3 and only a few residual silanols (<5%).
Aaron David Sadow, Sayak Banerjee, Jessica Rodriguez, Marco Mais, Frédéric A. Perras   +4 more
wiley   +1 more source

Heterogeneous Mn@CeO₂ Catalyst for α-Alkylation of Ketones with Alcohols via Hydrogen-Borrowing Strategy. [PDF]

ACS Omega
Swaathy R, Karthikeyan S.
europepmc   +1 more source

Intermolecular sp3C‐H Metalation of Non‐Nucleophilic Brønsted Bases Using Simple Lewis Acids

Angewandte Chemie International Edition, Accepted Article.
2,6‐Di‐tert‐butyl substituted pyridines (tBu2‐py) are widely used non‐nucleophilic Brønsted bases. Their ubiquity is due to their highly hindered basic site and chemically robust nature. Herein we report that simple M2X6 Lewis acids (M = Al or Ga, X = Cl, Br or I) effect intermolecular sp3C‐H metalation of tBu2‐py bases under mild conditions.
Anna Schellbach, Dominic Willcox, Miriana guarnaccia, Gary Nichol, Valerio Fasano, Michael Ingleson   +5 more
wiley   +1 more source

Ni(ii)/spiroBox-catalyzed asymmetric Friedel-Crafts alkylation of indoles with nitroalkenes. [PDF]

RSC Adv
Li Y, Sun S, Jiao L, Gao N, Cao G.
europepmc   +1 more source

Studies on Acetylenic Compounds. XX. Carbon-Carbon Alkylation with Acetylenic Mannich Base.

, 1962
Issei Iwai, Tetsuo Hiraoka
openalex   +2 more sources

On the "Second Alkylation" at the alpha-Position of Some N,N-disubstituted Arylacetic Acid Amides. [PDF]

, 1961
Olle Mårtensson, Erling Nilsson, Robert Nilsson, Gert E. Olsen, Christian Pedersen, Jens Toft   +5 more
openalex   +1 more source

Characterization of Cyclic [n]Spirobifluorenylene Compounds and Electron Delocalization in Their Radical Cation Species

Chemistry – An Asian Journal, EarlyView.
Radical cation species of cyclic [n]spirobifluorenylene (n = 4, 5) with bulky alkyl groups at the termini were synthesized to investigate the relationship between the number of perpendicular π‐conjugated units and electron transfer behavior. Both calculations and experiments revealed that the extent of electron delocalization increased as the ring size
Tomoya Imai, Toru Amaya
wiley   +1 more source

Further Studies on the Alkylation of the Histidine Residues at the Active Site of Pancreatic Ribonuclease

, 1968
Mengjie Lin, William H. Stein, Sara Moore   +2 more
openalex   +1 more source

Visible Light‐Mediated Preparation of a Key Intermediate Employed in the Synthesis of Zolpidem and Several Analogs

Chemistry – An Asian Journal, EarlyView.
A new visible light‐induced method is reported for the C3‐alkylation of imidazo[1,2‐a]pyrimidines and ‐pyridines with aryldiazoacetates. This protocol can be performed in open air and serves as a convenient entry to several known and new molecules. A formal synthesis of zolpidem is achieved by changing the alkylating agent to an appropriate hypervalent
Ronei M. S. Souza, Tales A. C. Goulart, Roberto do C. Pinheiro, Felipe F. do C. Sonaglio, Deborah de A. Simoni, Rodrigo A. Cormanich, Igor D. Jurberg   +6 more
wiley   +1 more source

Synthesis, Characterization and Application of NNN Pincer Manganese Complexes with Pyrazole Framework in α-Alkylation Reaction. [PDF]

Molecules
Wang T, Xu Y, Du M, Hu Z, Liu L.
europepmc   +1 more source