1,720,967 research outputs found
Rhodium-catalyzed enantioselective 1,2-addition of aluminum organyl compounds to cyclic enones
No full textTwo Titanium-Catalyzed Reaction Sequences for Syntheses of Pyrroles from (E/Z)-Chloroenynes or alpha-Haloalkynols
No full textTitanium-catalyzed intermolecular hydroaminations of (E/Z)-chloroenynes enabled an efficient pyrrole synthesis, which set the stage for the development of a user-friendly one-pot reaction for the regioselective preparation of fully substituted pyrroles from easily accessible alpha-haloalkynols.DF
Annulation of internal alkynes through a hydroamination/aza-Heck reaction sequence for the regioselective synthesis of indoles
No full textHighly regioselective annulation reactions of unsymmetrically substituted alkynes by primary 2-bromo or 2-chloroanilines are achieved with an efficient one-pot protocol, which relies on a regioselective TiCl(4)-catalyzed intermolecular hydroamination and a subsequent palladium-catalyzed intramolecular aza-Heck reaction. The use of unsymmetrically substituted alkynes in this strategy enables the synthesis of diversely functionalized indoles, with a regioselectivity that is complementary to the one obtained when employing Larock's annulation reaction. (c) 2007 Elsevier Ltd. All rights reserved
ChemInform Abstract: Two Titanium‐Catalyzed Reaction Sequences for Syntheses of Pyrroles from (E/Z)‐Chloroenynes or α‐Haloalkynols.
No full textNickel-catalyzed, base-mediated amination/hydroamination reaction sequence for a modular synthesis of indoles
No full textA catalytic system consisting of [Ni(cod)(2)] and ligand dppf enabled an efficient synthesis of differently substituted indoles through a modular reaction sequence, which consists of intermolecular aminations and intramolecular hydroaminations with ortho-alkynylhaloarenes. (C) 2010 Elsevier B.V. All rights reserved.DFG; Chinese Scholarship Counci
Palladium- and Nickel-Catalyzed Aminations of Aryl Imidazolylsulfonates and Sulfamates
No full textA nickel complex derived from dppf, along with NaOt-Bu as the base, allowed for challenging aminations of aryl sulfamates. An improved functional group tolerance is observed in novel palladium-catalyzed aminations of imidazolylsulfonates with rac-BINAP as the ligand.DFG; Chinese Scholarship Counci
ChemInform Abstract: Nickel-Catalyzed, Base-Mediated Amination/Hydroamination Reaction Sequence for a Modular Synthesis of Indoles.
No full textThieme Chemistry Journal Awardees - Where Are They Now? Palladium-Catalyzed N-Arylation-Hydroamination Sequence for the Synthesis of Indoles with Sterically Demanding N-Substituents
No full textA palladium-catalyzed sequence consisting of an N-arylation and ail intramolecular hydroamination sets the stage for a modular synthesis of indoles bearing sterically hindered N-substituents.DFG; Sanofi-Aventi
ChemInform Abstract: Rhodium‐Catalyzed Enantioselective 1,2‐Addition of Aluminum Organyl Compounds to Cyclic Enones.
No full textChemInform Abstract: Thieme Chemistry Journal Awardees — Where Are They Now? Palladium‐Catalyzed N‐Arylation—Hydroamination Sequence for the Synthesis of Indoles with Sterically Demanding N‐Substituents.
No full text- …
