VALENTIN, ENNIO
 Distribuzione geografica
Continente #
NA - Nord America 6.954
EU - Europa 2.943
AS - Asia 944
SA - Sud America 15
AF - Africa 14
Continente sconosciuto - Info sul continente non disponibili 14
OC - Oceania 4
Totale 10.888
Nazione #
US - Stati Uniti d'America 6.916
SE - Svezia 746
UA - Ucraina 667
CN - Cina 457
IT - Italia 366
FR - Francia 244
DE - Germania 218
TR - Turchia 214
FI - Finlandia 206
HK - Hong Kong 189
GB - Regno Unito 122
IE - Irlanda 97
BG - Bulgaria 96
CH - Svizzera 38
BE - Belgio 37
CA - Canada 37
RU - Federazione Russa 35
SG - Singapore 26
NL - Olanda 14
EU - Europa 13
JP - Giappone 11
ES - Italia 10
HU - Ungheria 10
IN - India 10
SN - Senegal 10
IL - Israele 8
BR - Brasile 7
IR - Iran 7
CZ - Repubblica Ceca 6
MY - Malesia 6
PL - Polonia 6
AT - Austria 5
VN - Vietnam 5
AR - Argentina 4
AU - Australia 4
DK - Danimarca 3
HR - Croazia 3
KR - Corea 3
RO - Romania 3
TH - Thailandia 3
AM - Armenia 2
CI - Costa d'Avorio 2
CL - Cile 2
EE - Estonia 2
GR - Grecia 2
PT - Portogallo 2
A2 - ???statistics.table.value.countryCode.A2??? 1
AE - Emirati Arabi Uniti 1
AL - Albania 1
DZ - Algeria 1
EC - Ecuador 1
ID - Indonesia 1
KW - Kuwait 1
MD - Moldavia 1
MX - Messico 1
NO - Norvegia 1
PE - Perù 1
RS - Serbia 1
SC - Seychelles 1
SK - Slovacchia (Repubblica Slovacca) 1
Totale 10.888
Città #
Ann Arbor 1.244
Woodbridge 1.082
Houston 661
Fairfield 616
Jacksonville 567
Chandler 510
Wilmington 322
Ashburn 295
Seattle 267
Cambridge 196
Princeton 191
Hong Kong 187
Izmir 180
Beijing 174
Dearborn 130
Dublin 97
Sofia 96
Boardman 63
Milan 60
Trieste 46
Mestre 42
Grafing 38
Buffalo 37
Verona 37
San Diego 36
Brussels 32
Hefei 30
Kocaeli 28
Munich 28
Columbus 27
Nanjing 26
Chicago 24
Bern 23
Bremen 22
Düsseldorf 21
Des Moines 17
Shanghai 17
Guangzhou 16
Helsinki 16
Sacile 16
Ottawa 15
Toronto 15
Nanchang 14
Redwood City 14
Norwalk 13
Singapore 13
Jinan 12
Phoenix 12
West Jordan 12
Kunming 11
Dakar 10
Falls Church 10
Hangzhou 9
Los Angeles 9
Paris 9
Regensburg 9
Washington 9
Auburn Hills 8
Changsha 8
Hebei 8
New York 8
Scottsdale 8
Denton 7
Zhengzhou 7
Zurich 7
Brno 6
London 6
Terni 6
Tokyo 6
Fremont 5
Geneva 5
Jerusalem 5
Sevilla 5
Vienna 5
Bologna 4
Chengdu 4
Costa Mesa 4
Frederick 4
Fuzhou 4
Lachine 4
Nuremberg 4
Philadelphia 4
Pittsburgh 4
Redmond 4
San Francisco 4
Shenyang 4
Southend 4
São Paulo 4
Tulsa 4
Warsaw 4
Antwerpen 3
Atlanta 3
Chongqing 3
Copenhagen 3
Hanoi 3
Indiana 3
Kansas City 3
Lipetsk 3
Littleton 3
Moscow 3
Totale 7.917
Nome #
1,2-Cycloaddition of a α,β-unsaturated esters to a biased enamine. Crystal and molecu1ar structure of a cis-bicyclo[4.2.0]octane derivative 286
1,3,4-Oxadiazine derivatives versus open-chain isomers from reactions of 2-amino-cyc1o-2-hexen-1-ones with aryl acyldiimides 274
1-Arylsulfonylamino-1,2,3-triazole derivatives from functionalized 1,2-cyclohexandiones 264
A combined experimental and computational strategy in the assignment of absolute configurations of 4-methyl-5-oxo-tetrahydrofuran-3-carboxylic acids and their esters 229
7-oxo-4,5,6,7-tetrahydroindole Derivatives from Nitro-olefins and Secondary a-keto enamines. 184
A study of the enantiopreference of Lipase PS (Pseudomonas cepacia) towards diastereomeric dihydro-5-alkyl-4-hydroxymethyl-2(3H)-furanones 170
Reactions of Fischer's base with cyclic and acyclic conjugated nitroolefins and nitrovinylethers 166
Chemoenzymatic synthesis of optically active 4-methyl-tetrahydro-5-oxo-Furancarboxylic acids and esters 163
A Chemoenzymatic Synthesis of Optically Active Aza Analogues of Quercus Lactones 162
1-Substituted morpholino ethenes—III. Carbocyclic and Aliphatic Heterocyclic Compounds from 5-Membered Ring Derivatives 161
Baker's Yeast reduction of 4-hetero-2-(2-nitroethyl)cyclohexanones 155
A short and convenient chemoenzymatic synthesis of both enantiomers of 3-phenylGABA and 3-(4-chlorophenyl)GABA (Baclofen) 155
Cyclopentaannulation Reactions between Nitrocycloalkenes and Diacetyl Morpholino Enamine 155
Synthesis of (+)- and (–)-Phaseolinic Acid by Combination of Enzymatic Hydrolysis and Chemical Transformations with Revision of the Absolute Configuration of the Natural Product 152
Carbo- and Heterocyclization Reactions of 2-(4-Morpholinyl)-1-phenylpropene and Nitroolefins 152
SYNTHESIS AND BIOLOGICAL RESOLUTION OF CONDENSED BICYCLIC ISOPARACONIC ACID DERIVATIVES 149
Unusual ring-chain tautomerism in some cyclic nitronic esters 149
The first kinetic enzymatic resolution of methyl ester of C75 146
Microbial bioreductions of g- and d-ketoacids and their esters 145
Bicyclic 1,2-Oxazine-N-oxides. Different behaviour in ring fission between systems derived from 5- and 6-membered ring cyclic enamines 145
Synthesis of all stereoisomers of cognac lactones via microbial reduction and enzymatic resolution strategies 144
Synthesis of Polysubstituted Pyrrolizidines from Proline Derivatives and Conjugated Nitroolefins 143
Chemoenzymatic synthesis of diastereomeric ethyl g-benzyl paraconates and determination of the absolute configurations of their acids 140
BAKER'S YEAST REDUCTION OF CYCLIC DELTA-KETOESTERS.SYNTHESIS AND CHIROPTICAL PROPERTIES OF CONDENSED DELTA-LACTONES 139
Octaline and decalone derivatives from a new annulation reaction in enamine field 136
Organocatalyzed synthesis of chiral non-racemic 1,4-dihydropyridazines 131
A chemoenzymatic approach to the synthesis of enantiomerically pure aza analogues of paraconic acid methyl ester and both enantiomers of methyl β-proline 131
Chemoenzymatic synthesis of enantioenriched 5-oxo-tetrahydro-3-furancarboxylic acid derivatives 127
Baker's Yeast Reduction of 2-(2-Nitroethyl)-1-cycloalkanones 127
ENANTIOMERICALLY PURE TETRAHYDRO-5-OXO-2-FURANCARBOXYLIC ESTERS FROM DIALKYL 2-OXOGLUTARATES 124
A convenient chemoenzymatic synthesis of (R)-(-) and (S)-(+)-homo-beta-proline 123
Synthesis of optically active 1,2,3-substituted 4,5,6,7-tetrahydro-7H-indolones 123
Synthesis of optically active a-benzyl paraconic acids and their esters and assignment of their absolute configuration 122
Esterase-mediated synthesis of optically active GABA analogues containing a stereogenic all-carbon quaternary carbon atom 122
A Facile Route To Polysubstituted 2-Hydroxy-3-nitrocyclopentanones via a Linear alpha-Ketoenamine 122
Synthesis and CD study of optically active bicyclic gamma-lactones belonging to the m-menthane series 121
Application of 1,3-azomethine ylides derived from alfa-dicarbonyl compounds and L-proline to the synthesis of pyrrolizidines 120
Reactivity of Conjugated Azoalkenes towards alpha-Amino Acid Ethyl Esters 119
Highly Diastereoselective Synthesis of Cyclic Nitronic Esters from 1-(4-Morpholinyl)-1-phenylpropene with Nitroolefins 116
Rapid efficient route to 3-hydroxy-o-phenylenediamine derivatives and derived benzoxazolines 116
Condensed 2-pyrrolidinone-1,2-oxazines from lithium enolate of 1-benzyl-5-oxo-3-pyrrolidinecarboxylic acid and beta-aryl,beta-nitroenamines 115
On the reactivity of some 2-methyleneindolines with b-nitroenamines, a-nitroalkenes and 1,2-diaza-1,3-butadienes 114
[3 + 2] Carbocyclization Reactions of Linear -Ketoenamines with Conjugated Nitroolefins 114
Vinylamines XIV. Nitroalkylation of enamine equilibrium mixtures 114
Electrophilic attack on biased isomeric nitroalkylated enamines. Stereospecific hydrolyses of the resulting adducts 112
Mononitroalkylations of Butane-2,3-dione 110
Chemoenzymatic and yeast-catalysed synthesis of diastereomeric ethyl gamma-phenyl and gamma-(n-pyridyl)paraconates 110
Vinylamines XV. Unusual stereochemical course in nitroalkylation of biased enaminic systems 110
Cyclic nitronic esters from highly diastereoselective cycloaddition of 2-(4-morpholinyl)norbornene to conjugated nitroolefins. 108
A facile chemoenzymatic approach to chiral non-racemic beta-alkyl-gamma-amino acids and 2-alkylsuccinic acids.A concise synthesis of (S)-(+)-Pregabalin 108
A Novel Short Approach to (Z)-Pulchellalactam Through TMC-ATRC of 1-Isopropyl-2-propenyl Dichloroacetate 108
α-Nitrostyrene. First reactions with enamines 108
Vinylamines X. Selectivity and stereochemistry of the reactions of 2-methylcyclohexanone enamines with ethylazodicarboxylate and phenylisocyanate 108
Chemo-Enzymatic Synthesis and Determination of the Absolute Configuration of Both Enantiomers of Methyl trans-5-Oxo-2-pentylpyrrolidine-3-carboxylate Precursors of the Aza Analogues of (+)- and (−)-Methylenolactocin 108
Stereochemical aspects of a substituted bicyclo[4.2.0]octane 107
Biotransformations in the synthesis of 2-pyrrolidinones and 2-pyrrolinones 105
First Chemoenzymatic Synthesis of (+)-2-Carboxypyrrolidineacetic Acid, the Nucleus of Kainoid Amino Acids. 105
SYNTHESIS OF ENANTIOMERICALLY PURE BICYCLIC CONDENSED DELTA-LACTONES VIA MICROBIAL REDUCTION AND ENZYMIC RESOLUTION STRATEGIES 103
Benzoxazol-2(3H)-one and 1,3,4-oxadiazol-2(3H)-one derivatives from substituted enaminones and ketoenamines 103
3-Amino-5.6-dihydro-4H-thiopyran l.l-dioxides. Reactivity with diethyl azodicarboxylate and some α,β-unsaturated ketones 103
Oxidation and Reduction of Enamines 103
Synthesis of optically active condensed gamma-lactones from 2-(2-nitroethyl)cyclohexanols. Part II 102
Tautomerism in enamines from 2-tetralone. Difference in nucleophilic behaviour between morpholino and pyrrolidino enamines 102
Diastereo- and Enantio-selective Cyclopentaannulations from Diacetyl Monoimines and Nitroalkenes 101
Structure and•reactivity of enamines derived from 5,6-dihydro-2H-thiopyran-3(4H)-one 1,1-dioxide 101
Asymmetric Resolution of Diasteroisomeric 4-Ethoxycarbonyl-5-pentyl-gamma-butyrolactones by Crude PLE-mediated Hydrolysis 99
The crystal and molecular structure of the adduct from the stereoisomeric equilibrium mixture of racemic 2-(α-phenyl, β-nitro)ethyl-4-t-butylcyclohexanone 97
Enamines and Ynamines 97
Kinetic Enzymatic Resolution of Alkyl tetrahydro-4-methylene-2-alkyl-5-oxo-3-furancarboxylates 97
Studying enzyme enantioselectivity using combined ab initio and free energy calculations: alfa-chymotrypsin and methyl cis- and trans-5-oxo-2-pentylpirrolidine-3-carboxylates 96
Computational studies on the enantioselectivity of alpha-chymotrypsin towards beta-carbomethoxy-gamma-lactams. 94
Structure and Nucleophilic Behaviour of Secondary and Tertiary Enaminosulfones 94
Cycloaddition vs. conjugative Michael-type addition of 2-ethoxy-3-morpholinobuta-1,3-diene with nitroolefins 91
Vinylamines XI. Structure and reactivity of 2-carbalkoxy-, 2-acyl- and 2- phenyl-cyclohexanone enamines with ethylazodicarboxylate and phenylisocyanate 91
Vinylamines XII. Equilibrium in enamines from 3-substituted cyclohexanone: high selectivity of β-nitrostyrene towards the Δ6 isomers 91
Mechanism and stereochemistry of kinetically controlled reactions of 2-substituted-cyclohexanone enamines with diethylazodicarboxylate 91
Ring contraction reactions of bicyclic nitronic esters 88
Enantiomerically pure beta,gamma-disubstituted gamma-lactams: Enzyme-mediated synthesis and computational studies 85
Lipase-catalyzed deacetylation of botryodiplodin acetate 84
Nitroalkylation Reactions of Methyl 2-(4-Morpholinyl)acrylate. Synthesis of alpha,omega-Dioxoesters 84
Enantioselectivity of alpha-chytripsyn towards 4,5-disubstituted-gamma-lactams: a new perspective from molecular simulations 82
Enamines and ynamines in The chemistry of functional groups.SupplementF: The chemistry of amino,nitroso and nitro compounds and their derivatives 81
Lack of stereoselectivity in the formation of thietane 1,1-dioxide derivative from anancomeric amino cycloalkenes 79
l-Substituted morpholino ethenes. III. Carbocyclic and aliphatic heterocyclic compounds from 5-membered ring derivatives 79
Preparation of the Maleic Anhydride Nucleus from Dichloro gamma-Lactams:Focus on the Role of the N-Substituent in the Functional Rearrangement and in the Hydrolytic Steps 70
Optically active alpha-phenylethylamine as efficient organocatalyst in the solvent-free reactions between 2,3-butanedione and conjugated nitroolefins 70
The crystal and molecular strueture of l-(piperidin-1-yl)-4-t-butyl-7-thiobicyclo[4.2.0]octane 7,7-dioxide [lα,4α,6α] 68
Nitroalkylation and nitroalkenylation reactions of gamma-lactone enolates. A facile ring switch from polysubstituted gamma-lactones to polysubstituted gamma-lactams 67
Recent Aspects of the Synthesis of Enantiopure 5-oxo-tetrahydro-3-furan carboxylic acids 66
Nucleophilic behaviour of l-substituted morpholino ethenes 64
Nucleophilic behaviour of enamines derived from 2-methyl-5,6-dihydro-2H-thiopyran-3(4H)-one l,l-dioxide 64
Oxidations and reduction of enamines in The chemistry of enamines, The chemistry of functional groups 62
Ionization energies of some amines and enamines and an estimation of their relative basicities in gaseous phase 56
Polyfunetionalized 1(2H)-hexahydropentalenones by rearrangement of bicyelie 1,2-oxazine N-oxide derivatives 45
ENZYMIC RESOLUTION OF AN ALFA-METHYLENE-GAMMA-LACTONIC ESTER 39
Totale 11.161
Categoria #
all - tutte 25.850
article - articoli 0
book - libri 0
conference - conferenze 0
curatela - curatele 0
other - altro 0
patent - brevetti 0
selected - selezionate 0
volume - volumi 0
Totale 25.850


Totale Lug Ago Sett Ott Nov Dic Gen Feb Mar Apr Mag Giu
2018/2019624 0 0 0 0 0 0 0 0 0 0 464 160
2019/20201.845 83 62 71 323 123 281 227 254 151 106 128 36
2020/20211.383 141 43 140 216 101 183 31 124 41 183 38 142
2021/20221.279 41 89 53 232 21 111 33 43 134 133 86 303
2022/20231.659 194 192 184 195 148 299 4 103 180 37 95 28
2023/2024743 81 55 59 48 101 46 123 161 5 27 37 0
Totale 11.161