IRIS
AZZENA, Ugo Gavino
 Distribuzione geografica
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Continente #
NA - Nord America 2.318
EU - Europa 1.417
AS - Asia 892
Continente sconosciuto - Info sul continente non disponibili 10
OC - Oceania 6
SA - Sud America 5
AF - Africa 2
Totale 4.650
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Nazione #
US - Stati Uniti d'America 2.311
CN - Cina 697
UA - Ucraina 601
DE - Germania 232
SE - Svezia 165
IT - Italia 146
FI - Finlandia 105
SG - Singapore 80
GB - Regno Unito 58
TR - Turchia 58
CZ - Repubblica Ceca 34
BE - Belgio 17
KR - Corea 12
IN - India 11
IR - Iran 10
JP - Giappone 10
FR - Francia 9
RO - Romania 9
IE - Irlanda 8
EU - Europa 7
CA - Canada 6
AU - Australia 5
IL - Israele 4
MD - Moldavia 4
RU - Federazione Russa 4
A2 - ???statistics.table.value.countryCode.A2??? 3
BG - Bulgaria 3
BR - Brasile 3
HK - Hong Kong 3
HU - Ungheria 3
DK - Danimarca 2
ES - Italia 2
PT - Portogallo 2
RS - Serbia 2
SA - Arabia Saudita 2
AE - Emirati Arabi Uniti 1
AR - Argentina 1
AT - Austria 1
BD - Bangladesh 1
CH - Svizzera 1
CI - Costa d'Avorio 1
CL - Cile 1
EE - Estonia 1
GR - Grecia 1
HR - Croazia 1
IM - Isola di Man 1
KH - Cambogia 1
LT - Lituania 1
LU - Lussemburgo 1
MX - Messico 1
NG - Nigeria 1
NL - Olanda 1
NO - Norvegia 1
NZ - Nuova Zelanda 1
PK - Pakistan 1
PL - Polonia 1
VN - Vietnam 1
Totale 4.650
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Città #
Chandler 617
Jacksonville 374
Princeton 216
Nanjing 187
Dearborn 118
Wilmington 92
Ann Arbor 77
Nanchang 74
Sassari 73
Boardman 60
Beijing 53
Singapore 52
Woodbridge 52
Izmir 51
Changsha 44
Tianjin 43
Hebei 41
Ashburn 39
Shenyang 39
New York 35
Zhengzhou 32
Jinan 28
Ningbo 25
Jiaxing 23
Andover 22
Hangzhou 20
Kunming 20
Taizhou 20
Olomouc 17
Brno 16
Brussels 16
San Mateo 15
Munich 14
Mountain View 13
Guangzhou 12
San Francisco 12
West Jordan 12
Seoul 11
Augusta 9
Haikou 9
Norwalk 9
Dublin 8
Ardabil 7
Chicago 7
Helsinki 7
Auburn Hills 5
Changchun 5
Edinburgh 5
London 5
Los Angeles 5
Chisinau 4
Fuzhou 4
Toronto 4
Falls Church 3
Kobe 3
Lanzhou 3
Milan 3
Mumbai 3
Redmond 3
Rome 3
Shanghai 3
Sofia 3
Tappahannock 3
Tel Aviv 3
Tokyo 3
Washington 3
Belgrade 2
Budapest 2
Cagliari 2
Canberra 2
Dueville 2
Fairfield 2
Horia 2
Houston 2
Lappeenranta 2
Monmouth Junction 2
Nuremberg 2
Oristano 2
Ozieri 2
Paris 2
Phoenix 2
Pistoia 2
Riyadh 2
San Mauro Torinese 2
Seattle 2
Stockholm 2
Taiyuan 2
Wuppertal 2
Abidjan 1
Abuja 1
Alexandria 1
Amsterdam 1
Auckland 1
Bend 1
Borås 1
Boston 1
Cedar Knolls 1
Charlotte 1
Chittagong 1
Città Di Castello 1
Totale 2.853
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Nome #
1,2-Bis(phenylsulphonyl)alkenes as Versatile Groups in Organic Synthesis 91
1,2-Diaryl-1,2-disodioethanes: Versatile, Highly Reactive, and Tunable Synthetic Equivalents of Sodium Metal 88
A New and Highly Effective Organometallic Approach to 1,2-Dehalogenations and Related Reactions 77
Reductive Lithiation of Alkoxy-substituted Benzyl Methyl Ethers and Connection with Cross-coupling Reactions 74
Regio- and stereochemistry of Na-mediated reductive cleavage of alkyl aryl ethers 68
Heterogeneous acidic catalysts for the tetrahydropyranylation of alcohols and phenols in green ethereal solvents 65
Ammonium salts catalyzed acetalization reactions in green ethereal solvents 62
Microwave-assisted carbamoylation of amines 61
The Effect of Topologically Controlled Coulombic Interactions on the Regioselectivity of the Reductive Cleavage of Alkyl Phenyl Ethers 60
Structure of 3,4-Bis(phenylthio)-Cyclobutene-1,2-dione 59
Optically Active Heteroaromatic Compounds. IX. The Synthesis of Monoalkyl-Substituted Optically Active Pyridines 57
Addressing Stereochemistry of Heterocyclic Compounds by DFT NMR Calculations 57
Cyclopentyl methyl ether-NH4X: a novel solvent/catalyst system for low impact acetalization reactions 56
Reductive lithiation of 1,3-dimethyl-2-arylimidazolidines 56
Generation of g-Oxy-Substituted Benzyllithium Derivatives by Reductive Lithiation of 4-Phenyl-1,3-dioxanes 56
Attivazione e Impiego di Metalli Alcalini in Solventi a Basso Impatto Ambientale 56
Sintesi di 2,5-dialchilresorcinoli e di combrestatine mediante reazioni di metallazione riduttiva 56
Reductive Electrophilic Substitution of Pyrogallol Derivatives: Synthesis of 2,3-Disubstituted Phenols 56
Cyclopentyl methyl ether: an elective eco-friendly ethereal solvent in classical and modern organic chemistry 55
UN’ALTERNATIVA “GREEN” AL TOLUENE 55
Chemoselective efficient synthesis of functionalized β-oxonitriles through cyanomethylation of Weinreb amides 55
Active-alkali metal-promoted reductive cleavage of chlorinated phenol 54
REACTIONS OF PHENYL(ARYLSULFONYL)ACETYLENES WITH OLEFINS AND DIENES 52
m-Terphenyl Ethers, a New Hydroxy Protecting Group Cleavable under Reductive Electron Trasfer Reaction Conditions 52
Active-sodium-promoted Reductive Cleavage of Halogenated Benzoic Acids 52
Single and Double Reductive Cleavage of C-O Bonds of Aromatic Acetals and Ketals: Generation of Benzylic Mono- and Dicarbanions 52
Application of the Anionic Homologous Fries-Rearrangement to the Synthesis of 3-Alkylbenzofuran-2(3H)-ones 52
A New Synthesis of 1-n-Alkyl-3,5-dimethoxybenzenes (Olivetol Dimethyl Ether and Homologs 51
Synthesis of Optically Active Chloro Alkanoic Esters 50
METALATION OF ARYLMETHYL METHYL ETHERS AND CONNECTION WITH THEIR REDUCTIVE ELECTROPHILIC SUBSTITUTION 50
Generation of Aryl- and Arylmethyl Carbanions by the Reductive Cleavage of Alkoxy-Substituted Aromatic Compounds 50
Reductive Cleavage of N-Substituted 2-Aryl- l,3-oxazolidines: Generation of alfa-Amino-Substituted Carbanions 50
An Improved Synthesis of 7,8-Bis(methylene)-bicyclo(2.2.2)octa-2,5-diene 49
Synthesis and reductive cleavage of m-terphenyl and 2,6-dimethoxyphenyl alkyl ethers 49
LITIAZIONE REGIO- E STEREOSELETTIVA DI COMPLESSI BORANO-N-ALCHIL-2-FENILAZIRIDINA 49
Reductive Cleavage of Diarylalkyl Methyl Ethers by Electron Transfer from Alkali Metals 48
Diastereoselective Electrophilic Substitution of g-Oxy-Substituted Benzyllithiums", Tetrahedron Letters, 43, 5137-5139 (2002) 47
Competition between Reducing and basic Properties of 1,2-Dialryl-1,2-disodiumethanes 47
Design and synthesis of bis-amide and hydrazide-containing derivatives of malonic acid as potential HIV-1 integrase inhibitors 47
Computational NMR as Useful Tool for Predicting Structure and Stereochemistry of Four-Membered Sulfur Heterocycles 47
Vinyl Cations in Organic Synthesis. Part 2. A Novel Synthesis of Methylene-1H-indenes (Benzofulvenes) by Cyclisation of Phenyl-Substituted But-1-en-3-ynes 47
ALFA-LITHIATION OF METHOXYMETHYL ARYLMETHYL ETHER: SCOPE AND LIMITATIONS 47
Conversion of Ferriosilanes to Ferriosilanols by Selective Oxidation of the SiH Function by Dimethyldioxirane 47
Tuning the Reducing Properties of 1,2-Diaryl-1,2-disodiumethanes 46
Regioselective 4-Demethoxylation of 1-n-Alkyl-3,4,5-trimethoxybenzenes: a Key Step in the Synthesis of Olivetol and its Homologues 46
Wittig Rearrangement of Aromatic Acetals and Ketals Induced by Reductive Electron Transfer 45
Reactivity of Arylic Carbanions Generated by Reductive Cleavage of C-N Bond of N,N-Dimethylanilines 45
Electron-Transfer-Induced Reductive Demethoxylation of Anisole: Evidence for Cleavage of a Radical Anion 45
Practical Generation of 3,5-Dimethoxybenzyllithium: Application to the Synthesis of 5-Substituted-Resorcinols 44
Eliminazioni riduttive di composti 1,2-disostituiti: un nuovo approccio organometallico 44
Reductive Electrophilic Substitution of Diarylmethyl Methyl Ethers: Synthetic Applications 44
Active-alkali metal promoted reductive desulfurization of dibenzothiophene and its hindered analogues 44
Metalation of arylmethyl alkyl ethers 43
Nenitzescu Synthesis of 5-Hydroxyindoles with Zinc, Iron and Magnesium Salts in Cyclopentyl Methyl Ether 43
Reductive Metalationof 1,2-Diaryl-substituted Ethenes: Synthetic Applications 43
Nuove ed efficienti sintesi dell'Idrossistirolo e di suoi derivati via ossifunzionalizzazione di precursori naturali 43
MODIFICAZIONI CHIMICHE DEL CARVACROLO, IL CHEMOTIPO PREDOMINANTE DELL’OLIO ESSENZIALE DI THYMUS HERBA-BARONA LOISEL DELLA SARDEGNA 43
Single Electron Transfer Reductive Cleavage of the Aryl-Nitrogen Bond in Phenyl-Substituted Dimethylanilines 43
Generation and Reactivity of a-Amino-Substituted Arylmethyllithium Organometallics 42
REGIOSELECTIVITY IN THE REDUCTIVE CLEAVAGE OF PYROGALLOL DERIVATIVES - REDUCTIVE ELECTROPHILIC SUBSTITUTION OF ACETALS OF 2,3-DIMETHOXYPHENOL 42
Benzylic Organometals via Reductive Metalation Procedures 42
Diastereoselective Electrophilic Substitution of a-Amino-Substituted Benzylic Organometals 42
Reducing Properties of 1,2-Disodium-1,2-diarylethanes 42
Dichotomy in the Double Bond Reactivity of 2,3-Bis(phenylsulphonyl)bicyclo-(2.2.1)hepta-2,5-diene and Related Compounds 42
Stereospecific Friedel-Crafts Alkylation of Aromatic Compounds: Synthesis of Optically Active 2- and 3-Arylalkanoic Esters 41
Direct Metalation of Methoxymethyl Arylmethyl Ethers: A Tin-free Approach to the Generation of α-Alkoxyalkoxy-substituted Aryllithiums 41
REDUCTIVE ELECTROPHILIC SUBSTITUTION OF PHTHALANS AND RING EXPANSION TO ISOCHROMAN DERIVATIVES 41
Alkali Metal-mediated Synthesis of 1- and 4-Substituted N-Alkyl-1,2,3,4-tetraidroisoquinolines 40
Regioselective Reductive Electrophilic Substitution of 1,2,3-Trimethoxybenzene and Its 5-Alkyl-Substituted Homologues 40
Reducing properties of 1,2-dipyridyl-1,2-disodioethanes: chemical validation of theoretical and electrochemical predictions 40
Synthesis of Antibiotic Stilbenes by Reductive Metalation of 3,4,5-Trimethoxybenzaldehyde Dimethyl Acetal", Synthetic Communications, 33, 1309-1317 (2003) 40
Electron.trasfer-induced Reductive Cleavage of Chlorinated Aryloxyalkanoic Acids 39
Regioselective Reductive Demethoxylation of 3,4,5-Trimethoxystilbenes 39
Silica Gel Stabilized Na and Na/K Alloys: Highly Effective, Versatile and Environmentally Friendly Reducing Agents 38
Reducing versus Basic Properties of 1,2-Diaryl-1,2-disodiumethanes 38
BH3-promoted Stereoselective beta-Lithiation of N-Alkyl-2-phenylaziridines 38
Models of Thioredoxin Hairpin Structures: Conformational Properties of beta-Turn Containing Sequences 36
New hydroxyl protective groups removable under SET conditions 35
Electron-transfer-induced reductive cleavage of phthalans: Reactivity and synthetic applications 35
Reductive Lithiation and Multilithiated Compounds in Synthesis 34
Electron-transfer-induced reductive dealkoxylation of alkyl aryl ethers .2. Reductive cleavage of isomeric dimethoxybenzenes 33
Reductive Cleavage of Benzannelated Cyclic Ethers and Amines: Synthetic Applications 32
Reductive lithiation of arylalkyl methyl ethers 32
Riduzione regioselettiva del 3,4,5-trimetossibenzil metil etere: sintesi di Resorcinoli 2,5-dialchilsostituiti 31
Regioselective Reductive Alkylation of 1,2,3-Trimethoxybenzene 31
Regioselectivity in Arene-Catalyzed Reductive Lithiation of Acetals of Chlorobenzaldehydes 31
Electron-Transfer-Induced Reductive Dealkoxylation of Alkyl Aryl Ethers. III. Reductive Cleavage of Methoxy-Substituted N,N-Dimethylanilines 30
Size Selectivity in the Hydroxylation of Esters of Unsaturated Fatty Acids 30
Reductive Metalation of 1,2-Diaryl-substituted Ethenes: Synthetic Applications 30
Diastereoselective Alkylation of a-Amino-Substituted Benzyllithiums, Tetrahedron Letters 29
Tuning the Reducing Properties of 1,2-Diaryl-1,2-Disodiumethanes 29
Visible-Light Photoredox-Catalyzed Amidation of Benzylic Alcohols 29
A green solvent approach to the chemistry of 1,2-diaryl-1,2-disodioethanes 28
Regioselective Reductive Electrophilic Substitution of Derivatives of 3,4,5-Trimethoxybenzaldehyde 28
Organometallic Compounds in Organic Synthesis 28
Metallazione riduttiva di 1,2-diarileteni: applicazioni sintetiche 28
Regioselective Reductive Alkylation of 3,4,5-Trimethoxybenzalbehyde Dimethyl Acetal: a New Synthesis of 4-Alkyl-3,5-Dimethoxybenzaldehydes and 2,5-Dialkyl-1,3-Dimethoxybenzenes 27
Reducing versus Basic Properties of 1,2-Diaryl-1,2-disodiumethanes 27
Active-alkali metal promoted reductive desulfurization of dibenzothiophene and its hindered analogues 26
Ion Pairing Effects on the Regioselectivity of Arylic vs. Benzylic C-O Bond Reductive Cleavage: Synthetic Applications 25
Totale 4.521
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Categoria #
all - tutte 23.233
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 23.233
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Totale Lug Ago Sett Ott Nov Dic Gen Feb Mar Apr Mag Giu
2019/2020771 0 3 82 7 94 110 218 12 109 27 106 3
2020/2021774 100 0 122 5 103 33 101 7 103 115 67 18
2021/2022542 66 2 5 8 6 3 27 39 55 41 74 216
2022/20231.185 119 56 14 221 110 212 4 154 188 13 58 36
2023/2024361 65 22 11 13 50 25 6 30 0 17 73 49
2024/202542 37 5 0 0 0 0 0 0 0 0 0 0
Totale 4.703