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2 results on '"Capitò E"'

1. Directed Palladation: Fine Tuning Permits the Catalytic 2-Alkenylation of Indoles

Author

Alfredo Ricci, Elena Capito, John M. Brown, Capitò E, Brown J M, and Ricci A

Subjects
Indole test, Chemistry, Metals and Alloys, Substituent, chemistry.chemical_element, General Chemistry, General Medicine, Nitrogen, Combinatorial chemistry, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, Materials Chemistry, Ceramics and Composites, Organic chemistry, Activation analysis, Palladium, bond functionalization
Abstract

A C-H activating Pd-catalysed alkenylation of indole is regiospecific for 2-substitution when the nitrogen carries a 2-pyridylmethyl substituent.

Published
2005
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2. Chiral oxazoline-1,3-dithianes:new effective nitrogen –sulfur donating ligands in asymmetric catalysis

Author

Alfredo Ricci, Salvatore Pollicino, Elena Capito, Mauro Comes-Franchini, Francesco Fini, Luca Bernardi, Mariafrancesca Fochi, Capitò E, Bernardi L, Comes-Franchini M, Fini F, Fochi M, Pollicino S, and Ricci A

Subjects
Substitution reaction, Addition reaction, Anomeric effect, Stereochemistry, Ligand, Organic Chemistry, Enantioselective synthesis, General Medicine, Oxazoline, Ring (chemistry), Medicinal chemistry, Catalysis, Inorganic Chemistry, chemistry.chemical_compound, Tsuji–Trost reaction, chemistry, Organocatalysis, Physical and Theoretical Chemistry, Conjugate
Abstract

A series of new chiral oxazoline-1,3-dithianes has been easily synthesized and used as ligands for asymmetric catalysis. The conjugate addition of Et 2 Zn to enones resulted in ees of up to 69%, whereas the Pd-catalyzed allylic alkylation led to the expected products in almost quantitative yields and up to 90% enantioselectivity. The ligand’s conformation has been explored using a combination of X-ray and NMR measurements, indicating the presence of a remarkable anomeric effect, which accounts for the preference of the oxazoline ring for the axial location.

Published
2005

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