User profiles for Ryan A. Altman
Ryan AltmanPurdue University Verified email at purdue.edu Cited by 3352 |
Monodentate Phosphines Provide Highly Active Catalysts for Pd‐Catalyzed C N Bond‐Forming Reactions of Heteroaromatic Halides/Amines and (H) N …
…, RE Tundel, T Ikawa, RA Altman… - Angewandte Chemie …, 2006 - Wiley Online Library
Despite advances in the scope of palladium-catalyzed CÀN bond-forming reactions through
the development of more active catalysts,[1, 2] limitations to the method still remain: 1) In …
the development of more active catalysts,[1, 2] limitations to the method still remain: 1) In …
Copper-catalyzed N-arylation of imidazoles and benzimidazoles
4,7-Dimethoxy-1,10-phenanthroline (L1c) was found to be an efficient ligand for the copper-catalyzed
N-arylation of imidazoles and benzimidazoles with both aryl iodides and bromides …
N-arylation of imidazoles and benzimidazoles with both aryl iodides and bromides …
4,7-Dimethoxy-1,10-phenanthroline: An Excellent Ligand for the Cu-Catalyzed N-Arylation of Imidazoles
RA Altman, SL Buchwald - Organic letters, 2006 - ACS Publications
4,7-Dimethoxy-1,10-phenanthroline (L) was found to be an efficient ligand for the copper-catalyzed
N-arylation of imidazole with aryl iodides and bromides under mild conditions. A …
N-arylation of imidazole with aryl iodides and bromides under mild conditions. A …
An improved Cu-based catalyst system for the reactions of alcohols with aryl halides
The use of 3,4,7,8-tetramethyl-1,10-phenanthroline (Me 4 Phen) as a ligand improves the
Cu-catalyzed cross-coupling reactions of aryl iodides and bromides with primary and …
Cu-catalyzed cross-coupling reactions of aryl iodides and bromides with primary and …
Palladium-catalyzed enantioselective α-arylation and α-vinylation of oxindoles facilitated by an axially chiral P-stereogenic ligand
AM Taylor, RA Altman, SL Buchwald - Journal of the American …, 2009 - ACS Publications
The enantioselective α-arylation and α-vinylation of oxindoles catalyzed by Pd and a
biarylmonophosphine ligand with both axial and phosphorus-based chirogenicity is reported. The …
biarylmonophosphine ligand with both axial and phosphorus-based chirogenicity is reported. The …
Orthogonal Pd-and Cu-based catalyst systems for C-and N-arylation of oxindoles
In the cross-coupling reactions of unprotected oxindoles with aryl halides, Pd- and Cu-based
catalyst systems displayed orthogonal chemoselectivity. A Pd-dialkylbiarylphosphine-…
catalyst systems displayed orthogonal chemoselectivity. A Pd-dialkylbiarylphosphine-…
Recent Advances in Transition Metal‐Catalyzed Functionalization of gem‐Difluoroalkenes
gem‐Difluorinated alkenes are readily accessible building blocks that can undergo functionalization
to provide a broad spectrum of fluorinated and non‐fluorinated products. Herein, we …
to provide a broad spectrum of fluorinated and non‐fluorinated products. Herein, we …
Cu-Catalyzed N- and O-Arylation of 2-, 3-, and 4-Hydroxypyridines and Hydroxyquinolines
RA Altman, SL Buchwald - Organic letters, 2007 - ACS Publications
With use of Cu-based catalysts, 2- and 4-hydroxypyridines were N-arylated in modest to
excellent yields. In the case of 2-hydroxypyridine, the use of 4,7-dimethoxy-1,10-phenanthroline, …
excellent yields. In the case of 2-hydroxypyridine, the use of 4,7-dimethoxy-1,10-phenanthroline, …
Pd-catalyzed Suzuki–Miyaura reactions of aryl halides using bulky biarylmonophosphine ligands
RA Altman, SL Buchwald - Nature Protocols, 2007 - nature.com
The following protocol describes the application of a highly active Pd-based catalyst system
in the Suzuki–Miyaura cross-coupling reaction of arylboronic acids with aryl chlorides to …
in the Suzuki–Miyaura cross-coupling reaction of arylboronic acids with aryl chlorides to …
Ligand‐Controlled Regiodivergent Palladium‐Catalyzed Decarboxylative Allylation Reaction to Access α, α‐Difluoroketones
α,α‐Difluoroketones possess unique physicochemical properties that are useful for
developing therapeutics and probes for chemical biology. To access the α‐allyl‐α,α‐difluoroketone …
developing therapeutics and probes for chemical biology. To access the α‐allyl‐α,α‐difluoroketone …