Zobrazeno 1 - 10
of 132
pro vyhledávání: '"Achille Barco"'
Publikováno v:
Tetrahedron Letters. 47:8087-8090
In situ generated nitro alkenes underwent tandem Michael–Henry and Michael–Michael sequences leading to the ‘one-pot’ formation of 3,4-substituted tetrahydrothiophenes using the commercially available 1,4-dithiane-2,5-diol (the dimer of merca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::494863e667356ed20398d0a81df9e69d
https://doi.org/10.1016/j.tetlet.2006.09.055
https://doi.org/10.1016/j.tetlet.2006.09.055
Autor:
Lucio Bassetti, Valerio Bertolasi, Gian Piero Pollini, Simonetta Benetti, Carmela De Risi, Achille Barco, Paolo Marchetti
Publikováno v:
Tetrahedron. 58:8553-8558
The application of 4-[(4-methylphenyl)sulfonyl]-1-(triphenylphosphoranylidene)-2-butanone, a readily available four-carbon building block, to the synthesis of 3-deoxy- d -manno-2-octulosonic acid (KDO) is described.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35209d0ef8a4e1340312321976e21ff5
https://doi.org/10.1016/s0040-4020(02)00998-5
https://doi.org/10.1016/s0040-4020(02)00998-5
Autor:
Achille Barco, Gian Piero Pollini, Simonetta Benetti, Carmela De Risi, Vinicio Zanirato, Paolo Marchetti
Publikováno v:
Tetrahedron. 55:5923-5930
The carbon atom ring-insertion via pyrolysis of an α-diazo-β-hydroxy ester intermediate, in turn obtained by reaction between ethyldiazoacetate and 3,4- O -isopropylidene-3( R ),4( S )-dihydroxycyclohexanone 2 , a chiron easily prepared through a f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6077c9a0e13cce81cd9dbe564246d8e9
https://doi.org/10.1016/s0040-4020(99)00254-9
https://doi.org/10.1016/s0040-4020(99)00254-9
Autor:
Vinicio Zanirato, Gian Piero Pollini, Simonetta Benetti, Carmela De Risi, Paolo Marchetti, Achille Barco
Publikováno v:
Tetrahedron: Asymmetry. 9:2857-2864
The key intermediate 18 for the synthesis of (−)-ovalicin was synthesized using (−)-quinic acid as the chiral source, through a series of stereocontrolled and efficient chemical reactions, thus establishing a new, formal synthesis of the natural
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79cd69fdd06ba7c57603d051b6d38ac2
https://doi.org/10.1016/s0957-4166(98)00284-5
https://doi.org/10.1016/s0957-4166(98)00284-5
Autor:
Gian Piero Pollini, Achille Barco, Paolo Marchetti, Vinicio Zanirato, Simonetta Benetti, Carmela De Risi
Publikováno v:
Tetrahedron Letters. 39:1973-1976
The title compound and the corresponding dianion have been used as convenient precursors for substituted divinyl ketones in both carbo- and heterocyclization reactions in a one-pot three-step sequence leading to substituted carbo- and heterocyclic ri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8fe5137d30119a157b87e48ea551b91
https://doi.org/10.1016/s0040-4039(98)00108-7
https://doi.org/10.1016/s0040-4039(98)00108-7
Autor:
Giampiero Spalluto, Gian Piero Pollini, Achille Barco, Vinicio Zanirato, Simonetta Benetti, Carmela De Risi
Publikováno v:
Tetrahedron. 52:4719-4734
The anion of the title compound, simply generated in the presence of catalytic amount of triethylamine, reacts with both common electrophilic olefins and aldehydes to give moderate to good yield of Michael or aldol adducts respectively. Mild acid tre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::680d29d68ceb734d95296dd09cd71401
https://doi.org/10.1016/0040-4020(96)00143-3
https://doi.org/10.1016/0040-4020(96)00143-3
Autor:
Simonetta Benetti, Gian Piero Pollini, A. Casolari, Giampiero Spalluto, Achille Barco, Anna Bianchi, Romeo Romagnoli, Vinicio Zanirato
Publikováno v:
Tetrahedron. 50:11743-11754
An enantioselective approach to the synthesis of the hexahydronaphthalene nucleus of natural compactin is described. The key elements of the synthesis are as follows: (i) the preparation of the chiral starting material through enzymatic resolution of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5604bb30102edcf490e5192c37994f6
https://doi.org/10.1016/s0040-4020(01)85667-2
https://doi.org/10.1016/s0040-4020(01)85667-2
Autor:
Gian Piero Pollini, Simonetta Benetti, Carmela De Risi, Vinicio Zanirato, Giampiero Spalluto, Achille Barco
Publikováno v:
Tetrahedron Letters. 34:3907-3910
The anion of the title compound, simply generated in the presence of catalytic amount of triethylamine, acts as nucleophilic acylating equivalent of formaldehyde reacting with both common electrophilic olefins or aldehydes to give moderate to good yi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c96c2cecda6df0fb81f1d9417281420
https://doi.org/10.1016/s0040-4039(00)79260-4
https://doi.org/10.1016/s0040-4039(00)79260-4
Publikováno v:
ChemInform. 22
A convergent one-pot construction of disubstituted pyrrolidine and piperidine frameworks has been accomplished through a simple protocol involving intermolecular conjugate addition of a nitrogen nucleophile to an electrophilic olefin followed by intr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b590ebf8580cb483133a621519730753
https://doi.org/10.1002/chin.199123153
https://doi.org/10.1002/chin.199123153
Publikováno v:
ChemInform. 23
Two procedures for the regiospecific preparation of 3-substituted-2-nitro-1,3-dienes have been developed. The cycloaddition chemistry of the in situ generated dienes has been investigated.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3f6b8b8d82812829155dbc50723a1d6
https://doi.org/10.1002/chin.199212063
https://doi.org/10.1002/chin.199212063