Class information for:
Level 1: 2 PYRONE//BASE CATALYZED DIELS ALDER REACTION//BICYCLO222OCTENES

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
20363 464 29.5 58%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
5 4 CHEMISTRY, ORGANIC//CHEMISTRY, INORGANIC & NUCLEAR//CHEMISTRY, MULTIDISCIPLINARY 1745167
1 3       CHEMISTRY, ORGANIC//TETRAHEDRON LETTERS//JOURNAL OF ORGANIC CHEMISTRY 237069
3793 2             2 PYRONE//DIAZENES//BENZIDINE REARRANGEMENT 959
20363 1                   2 PYRONE//BASE CATALYZED DIELS ALDER REACTION//BICYCLO222OCTENES 464

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 2 PYRONE authKW 409572 4% 33% 19
2 BASE CATALYZED DIELS ALDER REACTION authKW 197424 1% 100% 3
3 BICYCLO222OCTENES authKW 131616 0% 100% 2
4 METHYL COUMALATE authKW 131616 0% 100% 2
5 3 HYDROXY 2 PYRONE authKW 131612 1% 50% 4
6 2 PYRONE DERIVATIVES authKW 98709 1% 50% 3
7 NSF ENGN BIORENEWABLE CHEM address 95716 1% 36% 4
8 21H PYRIDONE authKW 87743 0% 67% 2
9 1 2 3TRIAZOLO1 5 ALPHA1 2 4TRIAZOLO5 1 CPYRAZINE authKW 65808 0% 100% 1
10 1 2 3TRIAZOLO1 5 ALPHAPYRAZINE authKW 65808 0% 100% 1

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 Chemistry, Organic 10536 67% 0% 311
2 Chemistry, Multidisciplinary 562 24% 0% 113
3 Chemistry, Medicinal 75 5% 0% 21
4 Crystallography 14 2% 0% 10
5 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY 13 1% 0% 4
6 Chemistry, Applied 9 2% 0% 10
7 Pharmacology & Pharmacy 7 5% 0% 24
8 Agriculture, Multidisciplinary 1 1% 0% 3
9 Materials Science, Textiles 0 0% 0% 1
10 Chemistry, Inorganic & Nuclear 0 2% 0% 7

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 NSF ENGN BIORENEWABLE CHEM 95716 1% 36% 4
2 CHEM BIO BIOTECHNOLSHENZHEN 65808 0% 100% 1
3 S YU YUNUSOV PLANT SUBST CHEM 65808 0% 100% 1
4 CHEM CHEM TECHNOL 55963 15% 1% 69
5 CNR SOSTANZE ORGAN NAT 21935 0% 33% 1
6 LRCMO2 21935 0% 33% 1
7 MAT ENERGY SCI 9478 1% 4% 4
8 441 KOMATSUSHIMA AOBA KU 8224 0% 13% 1
9 CLEAN PROC BRANCH 7738 0% 6% 2
10 CHIM ORGAN IND 6579 0% 10% 1

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 HETEROCYCLES 11027 10% 0% 47
2 TETRAHEDRON LETTERS 2991 13% 0% 58
3 TETRAHEDRON 2273 8% 0% 36
4 SYNTHESIS-STUTTGART 1416 4% 0% 18
5 NATURAL TOXINS 1195 0% 2% 1
6 SYNLETT 1173 3% 0% 16
7 JOURNAL OF HETEROCYCLIC CHEMISTRY 1167 3% 0% 14
8 JOURNAL OF ORGANIC CHEMISTRY 1122 6% 0% 30
9 SYNTHETIC COMMUNICATIONS 1026 3% 0% 15
10 ORGANIC SYNTHESES 740 0% 1% 2

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 2 PYRONE 409572 4% 33% 19 Search 2+PYRONE Search 2+PYRONE
2 BASE CATALYZED DIELS ALDER REACTION 197424 1% 100% 3 Search BASE+CATALYZED+DIELS+ALDER+REACTION Search BASE+CATALYZED+DIELS+ALDER+REACTION
3 BICYCLO222OCTENES 131616 0% 100% 2 Search BICYCLO222OCTENES Search BICYCLO222OCTENES
4 METHYL COUMALATE 131616 0% 100% 2 Search METHYL+COUMALATE Search METHYL+COUMALATE
5 3 HYDROXY 2 PYRONE 131612 1% 50% 4 Search 3+HYDROXY+2+PYRONE Search 3+HYDROXY+2+PYRONE
6 2 PYRONE DERIVATIVES 98709 1% 50% 3 Search 2+PYRONE+DERIVATIVES Search 2+PYRONE+DERIVATIVES
7 21H PYRIDONE 87743 0% 67% 2 Search 21H+PYRIDONE Search 21H+PYRIDONE
8 1 2 3TRIAZOLO1 5 ALPHA1 2 4TRIAZOLO5 1 CPYRAZINE 65808 0% 100% 1 Search 1+2+3TRIAZOLO1+5+ALPHA1+2+4TRIAZOLO5+1+CPYRAZINE Search 1+2+3TRIAZOLO1+5+ALPHA1+2+4TRIAZOLO5+1+CPYRAZINE
9 1 2 3TRIAZOLO1 5 ALPHAPYRAZINE 65808 0% 100% 1 Search 1+2+3TRIAZOLO1+5+ALPHAPYRAZINE Search 1+2+3TRIAZOLO1+5+ALPHAPYRAZINE
10 1 2 DIAROYLACETYLENES 65808 0% 100% 1 Search 1+2+DIAROYLACETYLENES Search 1+2+DIAROYLACETYLENES

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref.
in cl.		 Shr. of ref. in
cl.		 Citations
1 POZGAN, F , KOCEVAR, M , (2009) RING TRANSFORMATIONS OF 2H-PYRAN-2-ONES AND FUSED PYRAN-2-ONES WITH NUCLEOPHILIC REAGENTS.HETEROCYCLES. VOL. 77. ISSUE 2. P. 657-678 41 62% 8
2 KRANJC, K , KOCEVAR, M , (2013) REGIO- AND STEREOSELECTIVE SYNTHESES AND CYCLOADDITIONS OF SUBSTITUTED 2H-PYRAN-2-ONES AND THEIR FUSED DERIVATIVES.ARKIVOC. VOL. . ISSUE . P. 333 -363 44 46% 4
3 WU, WQ , HE, SZ , ZHOU, XF , LEE, CS , (2010) DIELS-ALDER CYCLOADDITIONS OF 5-HYDROXY-2-PYRONES: 2H-PYRAN-2,5-DIONES AND 5-(TERT-BUTYIDIMETHYLSILYLOXY)-2-PYRONES AS SYNTHONS.EUROPEAN JOURNAL OF ORGANIC CHEMISTRY. VOL. . ISSUE 6. P. 1124 -1133 31 57% 5
4 HREN, J , POLANC, S , KOCEVAR, M , (2008) THE SYNTHESIS AND TRANSFORMATIONS OF FUSED BICYCLO[2.2.2]OCTENES.ARKIVOC. VOL. . ISSUE . P. 209-231 31 60% 7
5 LEE, JS , (2015) RECENT ADVANCES IN THE SYNTHESIS OF 2-PYRONES.MARINE DRUGS. VOL. 13. ISSUE 3. P. 1581 -1620 33 36% 7
6 POLANC, S , KOCEVAR, M , JURANOVIC, A , KRANJC, K , PERDIH, F , (2011) COMPARISON OF THE REACTION PATHWAYS AND INTERMEDIATE PRODUCTS OF A MICROWAVE-ASSISTED AND HIGH-PRESSURE-PROMOTED CYCLOADDITION OF VINYL-MOIETY-CONTAINING DIENOPHILES ON 2H-PYRAN-2-ONES.TETRAHEDRON. VOL. 67. ISSUE 19. P. 3490 -3500 26 54% 5
7 CUCEK, K , GOLOBIC, A , VERCEK, B , (2007) SIMPLE APPROACH TO SOME N-(5-HYDROXY-1-PHENYL-1H-PYRAZOL-4-YL)BENZAMIDES.HETEROCYCLES. VOL. 73. ISSUE 1. P. 555 -+ 19 83% 2
8 TONG, H , LIU, B , (2014) A DIELS-ALDER APPROACH TOWARD THE SCAFFOLDS OF POLYCYCLIC SESQUITERPENOIDS WITH 2-PYRONE.SYNLETT. VOL. 25. ISSUE 5. P. 681 -686 26 48% 0
9 KRANJC, K , KOCEVAR, M , (2007) MICROWAVE-ASSISTED DIELS-ALDER REACTION OF 2H-PYRAN-2-ONES WITH MALEIMIDES TOWARDS FUSED BICYCLO[2.2.2]OCTENES.HETEROCYCLES. VOL. 73. ISSUE 1. P. 481 -+ 29 48% 4
10 JURANOVIC, A , KRANJC, K , POLANC, S , PERDIH, F , KOCEVAR, M , (2012) DIELS-ALDER REACTION OF FUSED PYRAN-2-ONES WITH ETHYL VINYL ETHER.MONATSHEFTE FUR CHEMIE. VOL. 143. ISSUE 5. P. 771 -777 26 46% 1

Classes with closest relation at Level 1


Rank Class id link
1 32161 PYRAZINONE//ISOPROPYLHYDRAZINE//21H PYRAZINONES
2 22561 NMR MOL MODELING//HISTAMINE ANALOGUES//NMR MOL MODELLING
3 17497 SOLANAPYRONES//BIOLOGICAL DIELS ALDER REACTION//MACROPHOMATE SYNTHASE
4 30430 DIAZENES//DIAZENECARBOXAMIDE//DIAZENEDICARBOXAMIDES
5 16290 2H PYRAN 2 ONE//RING TRANSFORMATION REACTION//2 AMINO 3 CYANOPYRIDINE
6 20834 CERPEGIN//RUBROLIDES//FURAN 25H ONES
7 27288 VERBENACHALCONE//MICONAZOLE POTENTIATOR//AZOLE POTENTIATOR
8 36614 6 METHYLPURINE ALPHA D RIBOSIDE//6 METHYLPURINE BETA D RIBOSIDE//ANGIOL UA 805 MINERAL CRISTALLOG
9 15160 ISOCOUMARIN//DIHYDROISOCOUMARIN//HYDRANGEA MACROPHYLLA VAR THUNBERGII
10 21799 6 PI AZAELECTROCYCLIZATION//TRICYCLIC PYRONES//ARISUGACIN A

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