IRIS
AZZENA, Ugo Gavino
 Distribuzione geografica
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Continente #
NA - Nord America 2.413
EU - Europa 1.456
AS - Asia 1.249
SA - Sud America 18
Continente sconosciuto - Info sul continente non disponibili 10
OC - Oceania 6
AF - Africa 3
Totale 5.155
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Nazione #
US - Stati Uniti d'America 2.406
CN - Cina 769
UA - Ucraina 601
SG - Singapore 359
DE - Germania 238
SE - Svezia 165
IT - Italia 162
FI - Finlandia 119
TR - Turchia 60
GB - Regno Unito 58
CZ - Repubblica Ceca 35
BE - Belgio 18
BR - Brasile 14
IN - India 13
KR - Corea 12
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
ES - Italia 3
HK - Hong Kong 3
HU - Ungheria 3
AR - Argentina 2
DK - Danimarca 2
PT - Portogallo 2
RS - Serbia 2
SA - Arabia Saudita 2
AE - Emirati Arabi Uniti 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
LA - Repubblica Popolare Democratica del Laos 1
LK - Sri Lanka 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
UY - Uruguay 1
VN - Vietnam 1
ZA - Sudafrica 1
Totale 5.155
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Città #
Chandler 617
Jacksonville 374
Singapore 292
Princeton 216
Nanjing 187
Dearborn 118
Wilmington 92
Ann Arbor 77
Nanchang 74
Sassari 73
Boardman 60
Shanghai 56
Beijing 54
Woodbridge 52
Izmir 51
Changsha 44
Tianjin 43
Hebei 41
Ashburn 39
Shenyang 39
New York 35
Zhengzhou 32
Jinan 28
Ningbo 25
Santa Clara 25
Jiaxing 24
Andover 22
Helsinki 21
Hangzhou 20
Kunming 20
Taizhou 20
Brussels 17
Olomouc 17
Brno 16
Munich 16
San Mateo 15
Guangzhou 13
Mountain View 13
Dallas 12
San Francisco 12
West Jordan 12
Seoul 11
Augusta 9
Haikou 9
Norwalk 9
Dublin 8
Ardabil 7
Chicago 7
Los Angeles 6
Auburn Hills 5
Changchun 5
Edinburgh 5
London 5
Chisinau 4
Fuzhou 4
Toronto 4
Washington 4
Falls Church 3
Frankfurt am Main 3
Istanbul 3
Kobe 3
Lanzhou 3
Milan 3
Mumbai 3
Redmond 3
Rome 3
Romola 3
San Jose 3
Sofia 3
Tappahannock 3
Tel Aviv 3
Tokyo 3
Belgrade 2
Budapest 2
Cagliari 2
Canberra 2
Dueville 2
Fairfield 2
Falkenstein 2
Horia 2
Houston 2
Lappeenranta 2
Monmouth Junction 2
Nuremberg 2
Oristano 2
Ozieri 2
Paris 2
Phoenix 2
Pistoia 2
Prague 2
Riyadh 2
San Mauro Torinese 2
Seattle 2
Stockholm 2
Taiyuan 2
Wuppertal 2
Abidjan 1
Abuja 1
Alexandria 1
Amsterdam 1
Totale 3.213
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Nome #
1,2-Bis(phenylsulphonyl)alkenes as Versatile Groups in Organic Synthesis 101
1,2-Diaryl-1,2-disodioethanes: Versatile, Highly Reactive, and Tunable Synthetic Equivalents of Sodium Metal 98
A New and Highly Effective Organometallic Approach to 1,2-Dehalogenations and Related Reactions 82
Reductive Lithiation of Alkoxy-substituted Benzyl Methyl Ethers and Connection with Cross-coupling Reactions 79
Regio- and stereochemistry of Na-mediated reductive cleavage of alkyl aryl ethers 74
Electron-Transfer-Induced Reductive Demethoxylation of Anisole: Evidence for Cleavage of a Radical Anion 72
Heterogeneous acidic catalysts for the tetrahydropyranylation of alcohols and phenols in green ethereal solvents 71
Ammonium salts catalyzed acetalization reactions in green ethereal solvents 70
Microwave-assisted carbamoylation of amines 66
Cyclopentyl methyl ether-NH4X: a novel solvent/catalyst system for low impact acetalization reactions 65
Addressing Stereochemistry of Heterocyclic Compounds by DFT NMR Calculations 64
The Effect of Topologically Controlled Coulombic Interactions on the Regioselectivity of the Reductive Cleavage of Alkyl Phenyl Ethers 63
Structure of 3,4-Bis(phenylthio)-Cyclobutene-1,2-dione 62
Generation of g-Oxy-Substituted Benzyllithium Derivatives by Reductive Lithiation of 4-Phenyl-1,3-dioxanes 62
m-Terphenyl Ethers, a New Hydroxy Protecting Group Cleavable under Reductive Electron Trasfer Reaction Conditions 62
Active-alkali metal-promoted reductive cleavage of chlorinated phenol 61
Sintesi di 2,5-dialchilresorcinoli e di combrestatine mediante reazioni di metallazione riduttiva 61
Attivazione e Impiego di Metalli Alcalini in Solventi a Basso Impatto Ambientale 60
Cyclopentyl methyl ether: an elective eco-friendly ethereal solvent in classical and modern organic chemistry 60
UN’ALTERNATIVA “GREEN” AL TOLUENE 60
Optically Active Heteroaromatic Compounds. IX. The Synthesis of Monoalkyl-Substituted Optically Active Pyridines 60
Reductive Electrophilic Substitution of Pyrogallol Derivatives: Synthesis of 2,3-Disubstituted Phenols 60
Reductive lithiation of 1,3-dimethyl-2-arylimidazolidines 59
Chemoselective efficient synthesis of functionalized β-oxonitriles through cyanomethylation of Weinreb amides 58
Active-sodium-promoted Reductive Cleavage of Halogenated Benzoic Acids 57
Application of the Anionic Homologous Fries-Rearrangement to the Synthesis of 3-Alkylbenzofuran-2(3H)-ones 57
Single and Double Reductive Cleavage of C-O Bonds of Aromatic Acetals and Ketals: Generation of Benzylic Mono- and Dicarbanions 56
REACTIONS OF PHENYL(ARYLSULFONYL)ACETYLENES WITH OLEFINS AND DIENES 55
METALATION OF ARYLMETHYL METHYL ETHERS AND CONNECTION WITH THEIR REDUCTIVE ELECTROPHILIC SUBSTITUTION 55
A New Synthesis of 1-n-Alkyl-3,5-dimethoxybenzenes (Olivetol Dimethyl Ether and Homologs 55
Synthesis of Optically Active Chloro Alkanoic Esters 54
An Improved Synthesis of 7,8-Bis(methylene)-bicyclo(2.2.2)octa-2,5-diene 54
LITIAZIONE REGIO- E STEREOSELETTIVA DI COMPLESSI BORANO-N-ALCHIL-2-FENILAZIRIDINA 54
Diastereoselective Electrophilic Substitution of g-Oxy-Substituted Benzyllithiums", Tetrahedron Letters, 43, 5137-5139 (2002) 53
Generation of Aryl- and Arylmethyl Carbanions by the Reductive Cleavage of Alkoxy-Substituted Aromatic Compounds 53
Reductive Cleavage of N-Substituted 2-Aryl- l,3-oxazolidines: Generation of alfa-Amino-Substituted Carbanions 53
Synthesis and reductive cleavage of m-terphenyl and 2,6-dimethoxyphenyl alkyl ethers 53
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 53
ALFA-LITHIATION OF METHOXYMETHYL ARYLMETHYL ETHER: SCOPE AND LIMITATIONS 53
Reductive Cleavage of Diarylalkyl Methyl Ethers by Electron Transfer from Alkali Metals 52
Computational NMR as Useful Tool for Predicting Structure and Stereochemistry of Four-Membered Sulfur Heterocycles 52
Tuning the Reducing Properties of 1,2-Diaryl-1,2-disodiumethanes 51
Design and synthesis of bis-amide and hydrazide-containing derivatives of malonic acid as potential HIV-1 integrase inhibitors 51
Metalation of arylmethyl alkyl ethers 50
Competition between Reducing and basic Properties of 1,2-Dialryl-1,2-disodiumethanes 50
Active-alkali metal promoted reductive desulfurization of dibenzothiophene and its hindered analogues 50
Conversion of Ferriosilanes to Ferriosilanols by Selective Oxidation of the SiH Function by Dimethyldioxirane 50
Reductive Electrophilic Substitution of Diarylmethyl Methyl Ethers: Synthetic Applications 48
Regioselective 4-Demethoxylation of 1-n-Alkyl-3,4,5-trimethoxybenzenes: a Key Step in the Synthesis of Olivetol and its Homologues 47
Alkali Metal-mediated Synthesis of 1- and 4-Substituted N-Alkyl-1,2,3,4-tetraidroisoquinolines 47
Stereospecific Friedel-Crafts Alkylation of Aromatic Compounds: Synthesis of Optically Active 2- and 3-Arylalkanoic Esters 47
REGIOSELECTIVITY IN THE REDUCTIVE CLEAVAGE OF PYROGALLOL DERIVATIVES - REDUCTIVE ELECTROPHILIC SUBSTITUTION OF ACETALS OF 2,3-DIMETHOXYPHENOL 47
Eliminazioni riduttive di composti 1,2-disostituiti: un nuovo approccio organometallico 47
Reactivity of Arylic Carbanions Generated by Reductive Cleavage of C-N Bond of N,N-Dimethylanilines 47
Nenitzescu Synthesis of 5-Hydroxyindoles with Zinc, Iron and Magnesium Salts in Cyclopentyl Methyl Ether 47
Nuove ed efficienti sintesi dell'Idrossistirolo e di suoi derivati via ossifunzionalizzazione di precursori naturali 47
Generation and Reactivity of a-Amino-Substituted Arylmethyllithium Organometallics 46
Practical Generation of 3,5-Dimethoxybenzyllithium: Application to the Synthesis of 5-Substituted-Resorcinols 46
Wittig Rearrangement of Aromatic Acetals and Ketals Induced by Reductive Electron Transfer 46
Benzylic Organometals via Reductive Metalation Procedures 46
Reductive Metalationof 1,2-Diaryl-substituted Ethenes: Synthetic Applications 46
Single Electron Transfer Reductive Cleavage of the Aryl-Nitrogen Bond in Phenyl-Substituted Dimethylanilines 46
MODIFICAZIONI CHIMICHE DEL CARVACROLO, IL CHEMOTIPO PREDOMINANTE DELL’OLIO ESSENZIALE DI THYMUS HERBA-BARONA LOISEL DELLA SARDEGNA 45
Diastereoselective Electrophilic Substitution of a-Amino-Substituted Benzylic Organometals 45
REDUCTIVE ELECTROPHILIC SUBSTITUTION OF PHTHALANS AND RING EXPANSION TO ISOCHROMAN DERIVATIVES 45
Reducing Properties of 1,2-Disodium-1,2-diarylethanes 45
Dichotomy in the Double Bond Reactivity of 2,3-Bis(phenylsulphonyl)bicyclo-(2.2.1)hepta-2,5-diene and Related Compounds 45
Regioselective Reductive Electrophilic Substitution of 1,2,3-Trimethoxybenzene and Its 5-Alkyl-Substituted Homologues 44
Direct Metalation of Methoxymethyl Arylmethyl Ethers: A Tin-free Approach to the Generation of α-Alkoxyalkoxy-substituted Aryllithiums 44
Reducing properties of 1,2-dipyridyl-1,2-disodioethanes: chemical validation of theoretical and electrochemical predictions 43
Electron.trasfer-induced Reductive Cleavage of Chlorinated Aryloxyalkanoic Acids 42
BH3-promoted Stereoselective beta-Lithiation of N-Alkyl-2-phenylaziridines 42
Silica Gel Stabilized Na and Na/K Alloys: Highly Effective, Versatile and Environmentally Friendly Reducing Agents 41
Synthesis of Antibiotic Stilbenes by Reductive Metalation of 3,4,5-Trimethoxybenzaldehyde Dimethyl Acetal", Synthetic Communications, 33, 1309-1317 (2003) 41
Regioselective Reductive Demethoxylation of 3,4,5-Trimethoxystilbenes 41
Models of Thioredoxin Hairpin Structures: Conformational Properties of beta-Turn Containing Sequences 40
Size Selectivity in the Hydroxylation of Esters of Unsaturated Fatty Acids 40
Regioselective Reductive Alkylation of 1,2,3-Trimethoxybenzene 39
Regioselectivity in Arene-Catalyzed Reductive Lithiation of Acetals of Chlorobenzaldehydes 39
Reducing versus Basic Properties of 1,2-Diaryl-1,2-disodiumethanes 39
Diastereoselective Alkylation of a-Amino-Substituted Benzyllithiums, Tetrahedron Letters 37
New hydroxyl protective groups removable under SET conditions 37
Reductive Lithiation and Multilithiated Compounds in Synthesis 37
Tuning the Reducing Properties of 1,2-Diaryl-1,2-Disodiumethanes 37
Electron-transfer-induced reductive cleavage of phthalans: Reactivity and synthetic applications 37
Electron-transfer-induced reductive dealkoxylation of alkyl aryl ethers .2. Reductive cleavage of isomeric dimethoxybenzenes 36
Reductive Cleavage of Benzannelated Cyclic Ethers and Amines: Synthetic Applications 35
Riduzione regioselettiva del 3,4,5-trimetossibenzil metil etere: sintesi di Resorcinoli 2,5-dialchilsostituiti 34
Visible-Light Photoredox-Catalyzed Amidation of Benzylic Alcohols 34
Reductive lithiation of arylalkyl methyl ethers 34
Electron-Transfer-Induced Reductive Dealkoxylation of Alkyl Aryl Ethers. III. Reductive Cleavage of Methoxy-Substituted N,N-Dimethylanilines 33
Organometallic Compounds in Organic Synthesis 33
A green solvent approach to the chemistry of 1,2-diaryl-1,2-disodioethanes 32
Reductive Metalation of 1,2-Diaryl-substituted Ethenes: Synthetic Applications 32
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 31
Recovery, Purification, Analysis and Chemical Modification of a Waste Cooking Oil 30
Active-alkali metal promoted reductive desulfurization of dibenzothiophene and its hindered analogues 30
Metallazione riduttiva di 1,2-diarileteni: applicazioni sintetiche 30
Reducing versus Basic Properties of 1,2-Diaryl-1,2-disodiumethanes 30
Regioselective Reductive Electrophilic Substitution of Derivatives of 3,4,5-Trimethoxybenzaldehyde 29
Totale 4.979
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Categoria #
all - tutte 29.516
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 29.516
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Totale Lug Ago Sett Ott Nov Dic Gen Feb Mar Apr Mag Giu
2019/2020585 0 0 0 0 0 110 218 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
2024/2025547 37 32 184 50 136 108 0 0 0 0 0 0
Totale 5.208