Search

Your search keyword '"Antonio Papagni"' showing total 3 results
Start Over Author "Antonio Papagni" Journal synlett
3 results on '"Antonio Papagni"'

1. Chiral Tricarbonyl(η6Arene)Chromium(0) Complexes in Stereoselective Hetero Diels-Alder Reactions

Author

Paola Del Buttero, Michaela Di Ciolo, Antonio Papagni, Clara Baldoli, and Stefano Maiorana

Subjects
Chromium, Chemistry, Organic Chemistry, Diels alder, chemistry.chemical_element, Organic chemistry, Stereoselectivity
Abstract

Zinc chloride-promoted stereoselective cyclocondensation of the Danishefsky diene [E-MeOCH:CHC(:CH2)OSiMe3] to ortho-substituted benzaldehyde and benzaldimine chromium tricarbonyl complexes gave 2,3-dihydro-4-pyridinone and 2,3-dihydro-4-pyranone derivs. in fairly good (75-90%) yields and with complete stereoselection. Exposure of CH2Cl2 solns. of the latter to sunlight gave the corresponding uncomplexed 2,3-dihydro-4-pyridinone and 2,3-dihydro-4-pyranone derivs.

Published
1996

2. Chemoselective oxidation of [(arylthioalkyl pyrrolidino)carbenechromium(0) pentacarbonyl complexes: synthesis of (arylsulfinyl and arylsulfonylalkyl pyrrolidino)carbene complexes

Author

Antonio Papagni, Emanuela Licandro, Paola Del Buttero, Stefano Maiorana, Clara Baldoli, Baldoli, C, del Buttero, P, Licandro, E, Maiorana, S, and Papagni, A

Subjects
Fischer carbene complexes, chemistry.chemical_compound, chemistry, CHIM/06 - CHIMICA ORGANICA, Organic Chemistry, chemoselective oxidation, Carbene, Medicinal chemistry
Abstract

The chemoselective oxidation of pentacarbonyl-[amino(arylthioalkyl)carbene]chromium(O) complexes by using N-sulfonyloxaziridine or dimethyldioxirane affords the corresponding sulfoxide or sulfone derivatives in good to high chemical yields

Published
1995

3. Reaction of Methyl (pyrrolidino)chromium Carbene Complex with Epoxides: Synthesis of γ-Hydroxyalkyl(pyrrolidino)chromium Carbene Complexes

Author

A. Zanotti‐Gerosa, Stefano Maiorana, Emanuela Licandro, Luciano Lattuada, Antonio Papagni, Lattuada, L, Licandro, E, Maiorana, S, Papagni, A, and Zanottigerosa, A

Subjects
chemistry.chemical_compound, Chromium, chemistry, CHIM/06 - CHIMICA ORGANICA, Organic Chemistry, amino-chromium carbene complexes, reaction with epoxides, Epoxide, chemistry.chemical_element, Organic chemistry, Medicinal chemistry, Carbene, Catalysis
Abstract

A series of new hydroxyalkyl(pyrrolidino)chromium carbene complexes 3a-f have been synthesized in good yields through the ring-opening reaction of epoxides 2a-e promoted by the conjugate base of methyl(pyrrolidino)chromium carbene (1), in the absence or in the presence of diethyl ether-boron trifluoride complex

Published
1992

Catalog

Books, media, physical & digital resources
See catalog results