IRIS
AZZENA, Ugo Gavino
 Distribuzione geografica
Salva come PNG Salva come JPEG
Continente #
NA - Nord America 2.319
EU - Europa 1.368
AS - Asia 798
Continente sconosciuto - Info sul continente non disponibili 10
OC - Oceania 6
SA - Sud America 5
AF - Africa 2
Totale 4.508
Salva come PNG Salva come JPEG
Nazione #
US - Stati Uniti d'America 2.312
CN - Cina 696
UA - Ucraina 601
DE - Germania 216
SE - Svezia 168
IT - Italia 146
FI - Finlandia 103
GB - Regno Unito 59
TR - Turchia 58
BE - Belgio 17
IN - India 11
IR - Iran 10
RO - Romania 9
FR - Francia 8
IE - Irlanda 8
EU - Europa 7
JP - Giappone 7
CA - Canada 6
AU - Australia 5
IL - Israele 4
MD - Moldavia 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
RU - Federazione Russa 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
CZ - Repubblica Ceca 1
EE - Estonia 1
GR - Grecia 1
HR - Croazia 1
IM - Isola di Man 1
KH - Cambogia 1
KR - Corea 1
LT - Lituania 1
LU - Lussemburgo 1
MK - Macedonia 1
MX - Messico 1
NG - Nigeria 1
NL - Olanda 1
NO - Norvegia 1
NZ - Nuova Zelanda 1
PK - Pakistan 1
PL - Polonia 1
SG - Singapore 1
VN - Vietnam 1
Totale 4.508
Salva come PNG Salva come JPEG
Città #
Chandler 626
Jacksonville 374
Princeton 218
Nanjing 187
Dearborn 118
Wilmington 92
Ann Arbor 77
Nanchang 74
Sassari 73
Beijing 53
Boardman 52
Woodbridge 52
Izmir 51
Changsha 44
Tianjin 43
Hebei 41
Ashburn 39
Shenyang 39
New York 37
Zhengzhou 32
Jinan 28
Ningbo 25
Jiaxing 23
Andover 22
Hangzhou 20
Kunming 20
Taizhou 20
Brussels 16
San Mateo 15
Mountain View 13
San Francisco 12
West Jordan 12
Guangzhou 11
Augusta 9
Haikou 9
Norwalk 9
Dublin 8
Ardabil 7
Chicago 7
Helsinki 7
Auburn Hills 5
Changchun 5
Edinburgh 5
London 5
Chisinau 4
Fuzhou 4
Toronto 4
Falls Church 3
Lanzhou 3
Milan 3
Mumbai 3
Redmond 3
Rome 3
Shanghai 3
Sofia 3
Stockholm 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
Los Angeles 2
Monmouth Junction 2
Oristano 2
Ozieri 2
Paris 2
Phoenix 2
Pistoia 2
Riyadh 2
San Mauro Torinese 2
Seattle 2
Taiyuan 2
Wuppertal 2
Abidjan 1
Abuja 1
Alexandria 1
Amsterdam 1
Auckland 1
Bend 1
Borås 1
Boston 1
Cambridge 1
Cedar Knolls 1
Charlotte 1
Chittagong 1
Città Di Castello 1
Copenhagen 1
Cupertino 1
Dalian 1
Douglas 1
Dubai 1
Elk Grove Village 1
Frankfurt Am Main 1
Totale 2.746
Salva come PNG Salva come JPEG
Nome #
1,2-Bis(phenylsulphonyl)alkenes as Versatile Groups in Organic Synthesis 86
1,2-Diaryl-1,2-disodioethanes: Versatile, Highly Reactive, and Tunable Synthetic Equivalents of Sodium Metal 81
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 73
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 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
Ammonium salts catalyzed acetalization reactions in green ethereal solvents 59
Cyclopentyl methyl ether-NH4X: a novel solvent/catalyst system for low impact acetalization reactions 56
Generation of g-Oxy-Substituted Benzyllithium Derivatives by Reductive Lithiation of 4-Phenyl-1,3-dioxanes 56
Optically Active Heteroaromatic Compounds. IX. The Synthesis of Monoalkyl-Substituted Optically Active Pyridines 56
Reductive lithiation of 1,3-dimethyl-2-arylimidazolidines 55
Cyclopentyl methyl ether: an elective eco-friendly ethereal solvent in classical and modern organic chemistry 55
Reductive Electrophilic Substitution of Pyrogallol Derivatives: Synthesis of 2,3-Disubstituted Phenols 55
Addressing Stereochemistry of Heterocyclic Compounds by DFT NMR Calculations 55
UN’ALTERNATIVA “GREEN” AL TOLUENE 54
Chemoselective efficient synthesis of functionalized β-oxonitriles through cyanomethylation of Weinreb amides 54
Sintesi di 2,5-dialchilresorcinoli e di combrestatine mediante reazioni di metallazione riduttiva 53
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
REACTIONS OF PHENYL(ARYLSULFONYL)ACETYLENES WITH OLEFINS AND DIENES 51
Attivazione e Impiego di Metalli Alcalini in Solventi a Basso Impatto Ambientale 51
Application of the Anionic Homologous Fries-Rearrangement to the Synthesis of 3-Alkylbenzofuran-2(3H)-ones 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
Active-alkali metal-promoted reductive cleavage of chlorinated phenol 49
A New Synthesis of 1-n-Alkyl-3,5-dimethoxybenzenes (Olivetol Dimethyl Ether and Homologs 49
Reductive Cleavage of N-Substituted 2-Aryl- l,3-oxazolidines: Generation of alfa-Amino-Substituted Carbanions 49
m-Terphenyl Ethers, a New Hydroxy Protecting Group Cleavable under Reductive Electron Trasfer Reaction Conditions 48
Synthesis and reductive cleavage of m-terphenyl and 2,6-dimethoxyphenyl alkyl ethers 48
Reductive Cleavage of Diarylalkyl Methyl Ethers by Electron Transfer from Alkali Metals 47
Computational NMR as Useful Tool for Predicting Structure and Stereochemistry of Four-Membered Sulfur Heterocycles 47
LITIAZIONE REGIO- E STEREOSELETTIVA DI COMPLESSI BORANO-N-ALCHIL-2-FENILAZIRIDINA 47
Conversion of Ferriosilanes to Ferriosilanols by Selective Oxidation of the SiH Function by Dimethyldioxirane 47
Diastereoselective Electrophilic Substitution of g-Oxy-Substituted Benzyllithiums", Tetrahedron Letters, 43, 5137-5139 (2002) 46
Regioselective 4-Demethoxylation of 1-n-Alkyl-3,4,5-trimethoxybenzenes: a Key Step in the Synthesis of Olivetol and its Homologues 46
Competition between Reducing and basic Properties of 1,2-Dialryl-1,2-disodiumethanes 46
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 46
Tuning the Reducing Properties of 1,2-Diaryl-1,2-disodiumethanes 45
An Improved Synthesis of 7,8-Bis(methylene)-bicyclo(2.2.2)octa-2,5-diene 45
Eliminazioni riduttive di composti 1,2-disostituiti: un nuovo approccio organometallico 44
Wittig Rearrangement of Aromatic Acetals and Ketals Induced by Reductive Electron Transfer 44
Design and synthesis of bis-amide and hydrazide-containing derivatives of malonic acid as potential HIV-1 integrase inhibitors 44
Reductive Electrophilic Substitution of Diarylmethyl Methyl Ethers: Synthetic Applications 44
Practical Generation of 3,5-Dimethoxybenzyllithium: Application to the Synthesis of 5-Substituted-Resorcinols 43
Reductive Metalationof 1,2-Diaryl-substituted Ethenes: Synthetic Applications 43
Electron-Transfer-Induced Reductive Demethoxylation of Anisole: Evidence for Cleavage of a Radical Anion 43
ALFA-LITHIATION OF METHOXYMETHYL ARYLMETHYL ETHER: SCOPE AND LIMITATIONS 43
Generation and Reactivity of a-Amino-Substituted Arylmethyllithium Organometallics 42
Reactivity of Arylic Carbanions Generated by Reductive Cleavage of C-N Bond of N,N-Dimethylanilines 42
MODIFICAZIONI CHIMICHE DEL CARVACROLO, IL CHEMOTIPO PREDOMINANTE DELL’OLIO ESSENZIALE DI THYMUS HERBA-BARONA LOISEL DELLA SARDEGNA 42
Diastereoselective Electrophilic Substitution of a-Amino-Substituted Benzylic Organometals 42
Single Electron Transfer Reductive Cleavage of the Aryl-Nitrogen Bond in Phenyl-Substituted Dimethylanilines 42
Dichotomy in the Double Bond Reactivity of 2,3-Bis(phenylsulphonyl)bicyclo-(2.2.1)hepta-2,5-diene and Related Compounds 42
Active-alkali metal promoted reductive desulfurization of dibenzothiophene and its hindered analogues 42
Metalation of arylmethyl alkyl ethers 41
Stereospecific Friedel-Crafts Alkylation of Aromatic Compounds: Synthesis of Optically Active 2- and 3-Arylalkanoic Esters 41
REGIOSELECTIVITY IN THE REDUCTIVE CLEAVAGE OF PYROGALLOL DERIVATIVES - REDUCTIVE ELECTROPHILIC SUBSTITUTION OF ACETALS OF 2,3-DIMETHOXYPHENOL 41
Reducing Properties of 1,2-Disodium-1,2-diarylethanes 41
Regioselective Reductive Electrophilic Substitution of 1,2,3-Trimethoxybenzene and Its 5-Alkyl-Substituted Homologues 40
Nenitzescu Synthesis of 5-Hydroxyindoles with Zinc, Iron and Magnesium Salts in Cyclopentyl Methyl Ether 40
Direct Metalation of Methoxymethyl Arylmethyl Ethers: A Tin-free Approach to the Generation of α-Alkoxyalkoxy-substituted Aryllithiums 40
REDUCTIVE ELECTROPHILIC SUBSTITUTION OF PHTHALANS AND RING EXPANSION TO ISOCHROMAN DERIVATIVES 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
Reducing properties of 1,2-dipyridyl-1,2-disodioethanes: chemical validation of theoretical and electrochemical predictions 39
Nuove ed efficienti sintesi dell'Idrossistirolo e di suoi derivati via ossifunzionalizzazione di precursori naturali 39
Regioselective Reductive Demethoxylation of 3,4,5-Trimethoxystilbenes 38
Alkali Metal-mediated Synthesis of 1- and 4-Substituted N-Alkyl-1,2,3,4-tetraidroisoquinolines 37
Silica Gel Stabilized Na and Na/K Alloys: Highly Effective, Versatile and Environmentally Friendly Reducing Agents 37
Models of Thioredoxin Hairpin Structures: Conformational Properties of beta-Turn Containing Sequences 36
Benzylic Organometals via Reductive Metalation Procedures 36
Reducing versus Basic Properties of 1,2-Diaryl-1,2-disodiumethanes 36
BH3-promoted Stereoselective beta-Lithiation of N-Alkyl-2-phenylaziridines 36
New hydroxyl protective groups removable under SET conditions 34
Electron-transfer-induced reductive cleavage of phthalans: Reactivity and synthetic applications 34
Reductive Lithiation and Multilithiated Compounds in Synthesis 33
Electron-transfer-induced reductive dealkoxylation of alkyl aryl ethers .2. Reductive cleavage of isomeric dimethoxybenzenes 32
Reductive Cleavage of Benzannelated Cyclic Ethers and Amines: Synthetic Applications 32
Regioselectivity in Arene-Catalyzed Reductive Lithiation of Acetals of Chlorobenzaldehydes 31
Reductive lithiation of arylalkyl methyl ethers 31
Regioselective Reductive Alkylation of 1,2,3-Trimethoxybenzene 30
Diastereoselective Alkylation of a-Amino-Substituted Benzyllithiums, Tetrahedron Letters 29
Electron-Transfer-Induced Reductive Dealkoxylation of Alkyl Aryl Ethers. III. Reductive Cleavage of Methoxy-Substituted N,N-Dimethylanilines 29
Riduzione regioselettiva del 3,4,5-trimetossibenzil metil etere: sintesi di Resorcinoli 2,5-dialchilsostituiti 29
Reductive Metalation of 1,2-Diaryl-substituted Ethenes: Synthetic Applications 29
A green solvent approach to the chemistry of 1,2-diaryl-1,2-disodioethanes 27
Regioselective Reductive Electrophilic Substitution of Derivatives of 3,4,5-Trimethoxybenzaldehyde 27
Tuning the Reducing Properties of 1,2-Diaryl-1,2-Disodiumethanes 27
Organometallic Compounds in Organic Synthesis 27
Visible-Light Photoredox-Catalyzed Amidation of Benzylic Alcohols 27
Size Selectivity in the Hydroxylation of Esters of Unsaturated Fatty Acids 27
Reducing versus Basic Properties of 1,2-Diaryl-1,2-disodiumethanes 27
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 26
Aquivion perfluorosulfonic superacid as an effective catalyst for selective epoxidation of vegetable oils 26
Metallazione riduttiva di 1,2-diarileteni: applicazioni sintetiche 25
Ion Pairing Effects on the Regioselectivity of Arylic vs. Benzylic C-O Bond Reductive Cleavage: Synthetic Applications 24
Totale 4.389
Salva come PNG Salva come JPEG
Categoria #
all - tutte 18.976
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 18.976
Salva come PNG Salva come JPEG


Totale Lug Ago Sett Ott Nov Dic Gen Feb Mar Apr Mag Giu
2018/2019236 0 0 0 0 0 0 0 0 0 8 0 228
2019/20201.019 248 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
2021/2022549 66 2 5 8 6 3 27 39 55 41 79 218
2022/20231.200 120 58 14 225 110 216 4 155 190 13 59 36
2023/2024240 66 23 11 13 52 25 6 30 0 14 0 0
Totale 4.562