学术探索
学术期刊
新闻热点
数据分析
智能评审
立即登录
Synthesis of spiroquinolines through a one-pot multicatalytic and multicomponent cascade reaction
被引:72
作者
:
Barluenga, Jose
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada CSIC, E-33006 Oviedo, Spain
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada CSIC, E-33006 Oviedo, Spain
Barluenga, Jose
[
1
]
Mendoza, Abraham
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada CSIC, E-33006 Oviedo, Spain
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada CSIC, E-33006 Oviedo, Spain
Mendoza, Abraham
[
1
]
Rodriguez, Felix
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada CSIC, E-33006 Oviedo, Spain
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada CSIC, E-33006 Oviedo, Spain
Rodriguez, Felix
[
1
]
Fananas, Francisco J.
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada CSIC, E-33006 Oviedo, Spain
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada CSIC, E-33006 Oviedo, Spain
Fananas, Francisco J.
[
1
]
机构
:
[1]
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada CSIC, E-33006 Oviedo, Spain
来源
:
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
|
2008年
/ 47卷
/ 37期
关键词
:
cyclization;
homogeneous catalysis;
multicomponent;
reactions;
platinum;
quinolines;
D O I
:
10.1002/anie.200802582
中图分类号
:
O6 [化学];
学科分类号
:
0703 ;
摘要
:
(Chemical Equation Presented) Three's company: Functionalized spirocyclic quinoline derivatives are easily synthesized in a one-pot three-component coupling process involving the reaction of alkynol, aldehyde, and aniline derivatives (see scheme). The process is carried out in the presence of catalytic amounts of a platinum(II) complex and a protic acid. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码:7044 / 7047
页数:4
相关论文
共 59 条
[1]
[Anonymous], 2001, NEW CHEM
[2]
[Anonymous], 1991, Comprehensive Organic Synthesis
[3]
[Anonymous], 2000, STIMULATING CONCEPTS
[4]
NOVEL, POTENT, AND SELECTIVE 5-HT3 RECEPTOR ANTAGONISTS BASED ON THE ARYLPIPERAZINE SKELETON - SYNTHESIS, STRUCTURE, BIOLOGICAL-ACTIVITY, AND COMPARATIVE MOLECULAR-FIELD ANALYSIS STUDIES
论文数:
引用数:
h-index:
机构:
ANZINI, M
论文数:
引用数:
h-index:
机构:
CAPPELLI, A
VOMERO, S
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV SIENA, DIPARTIMENTO FARMACO CHIM TECNOL, I-53100 SIENA, ITALY
VOMERO, S
GIORGI, G
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV SIENA, DIPARTIMENTO FARMACO CHIM TECNOL, I-53100 SIENA, ITALY
GIORGI, G
论文数:
引用数:
h-index:
机构:
LANGER, T
论文数:
引用数:
h-index:
机构:
HAMON, M
MERAHI, N
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV SIENA, DIPARTIMENTO FARMACO CHIM TECNOL, I-53100 SIENA, ITALY
MERAHI, N
论文数:
引用数:
h-index:
机构:
EMERIT, BM
CAGNOTTO, A
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV SIENA, DIPARTIMENTO FARMACO CHIM TECNOL, I-53100 SIENA, ITALY
CAGNOTTO, A
SKORUPSKA, M
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV SIENA, DIPARTIMENTO FARMACO CHIM TECNOL, I-53100 SIENA, ITALY
SKORUPSKA, M
MENNINI, T
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV SIENA, DIPARTIMENTO FARMACO CHIM TECNOL, I-53100 SIENA, ITALY
MENNINI, T
PINTO, JC
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV SIENA, DIPARTIMENTO FARMACO CHIM TECNOL, I-53100 SIENA, ITALY
PINTO, JC
[J].
JOURNAL OF MEDICINAL CHEMISTRY,
1995,
38
(14)
: 2692
-
2704
[5]
[W(CO)5]-catalyzed endo- or exo-cycloisomerization reactions of 1,1-disubstituted 4-pentyn-1-ols:: Experimental and theoretical studies
Barluenga, J
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enrique Moles, E-33006 Oviedo, Spain
Barluenga, J
Diéguez, A
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enrique Moles, E-33006 Oviedo, Spain
Diéguez, A
Rodríguez, F
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enrique Moles, E-33006 Oviedo, Spain
Rodríguez, F
Fañanás, FJ
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enrique Moles, E-33006 Oviedo, Spain
Fañanás, FJ
Sordo, T
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enrique Moles, E-33006 Oviedo, Spain
Sordo, T
Campomanes, P
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enrique Moles, E-33006 Oviedo, Spain
Campomanes, P
[J].
CHEMISTRY-A EUROPEAN JOURNAL,
2005,
11
(19)
: 5735
-
5741
[6]
Tandem [W(CO)5]-catalyzed cycloisomerization-cyclopropanation reactions directed toward the synthesis of eight-membered carbocycles
Barluenga, J
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Unidad Asociada CSIC, Inst Univ Quim Organomet Enrique Moles, Oviedo 33006, Spain
Univ Oviedo, Unidad Asociada CSIC, Inst Univ Quim Organomet Enrique Moles, Oviedo 33006, Spain
Barluenga, J
Diéguez, A
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Unidad Asociada CSIC, Inst Univ Quim Organomet Enrique Moles, Oviedo 33006, Spain
Univ Oviedo, Unidad Asociada CSIC, Inst Univ Quim Organomet Enrique Moles, Oviedo 33006, Spain
Diéguez, A
Rodríguez, H
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Unidad Asociada CSIC, Inst Univ Quim Organomet Enrique Moles, Oviedo 33006, Spain
Univ Oviedo, Unidad Asociada CSIC, Inst Univ Quim Organomet Enrique Moles, Oviedo 33006, Spain
Rodríguez, H
Fañanás, FJ
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Unidad Asociada CSIC, Inst Univ Quim Organomet Enrique Moles, Oviedo 33006, Spain
Univ Oviedo, Unidad Asociada CSIC, Inst Univ Quim Organomet Enrique Moles, Oviedo 33006, Spain
Fañanás, FJ
[J].
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,
2005,
44
(01)
: 126
-
128
[7]
Gold- or platinum-catalyzed tandem cycloisomerization/Prins-type cyclization reactions
Barluenga, J
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Barluenga, J
Diéguez, A
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Diéguez, A
Fernández, A
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Fernández, A
Rodríguez, F
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Rodríguez, F
Fañanás, FJ
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Fañanás, FJ
[J].
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,
2006,
45
(13)
: 2091
-
2093
[8]
BARLUENGA J, 2005, ANGEW CHEM, V117, P128
[9]
BARLUENGA J, 2006, ANGEW CHEM, V118, P2145
[10]
Tandem intramolecular hydroalkoxylation-hydroarylation reactions:: Synthesis of enantiopure benzofused cyclic ethers from the chiral pool
Barluenga, Jose
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Barluenga, Jose
Fernandez, Amadeo
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Fernandez, Amadeo
Satrustegui, Amaya
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Satrustegui, Amaya
Dieguez, Alejandro
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Dieguez, Alejandro
Rodriguez, Felix
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Rodriguez, Felix
Fananas, Francisco J.
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Fananas, Francisco J.
[J].
CHEMISTRY-A EUROPEAN JOURNAL,
2008,
14
(14)
: 4153
-
4156
←
1
2
3
4
5
6
→
共 59 条
[1]
[Anonymous], 2001, NEW CHEM
[2]
[Anonymous], 1991, Comprehensive Organic Synthesis
[3]
[Anonymous], 2000, STIMULATING CONCEPTS
[4]
NOVEL, POTENT, AND SELECTIVE 5-HT3 RECEPTOR ANTAGONISTS BASED ON THE ARYLPIPERAZINE SKELETON - SYNTHESIS, STRUCTURE, BIOLOGICAL-ACTIVITY, AND COMPARATIVE MOLECULAR-FIELD ANALYSIS STUDIES
论文数:
引用数:
h-index:
机构:
ANZINI, M
论文数:
引用数:
h-index:
机构:
CAPPELLI, A
VOMERO, S
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV SIENA, DIPARTIMENTO FARMACO CHIM TECNOL, I-53100 SIENA, ITALY
VOMERO, S
GIORGI, G
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV SIENA, DIPARTIMENTO FARMACO CHIM TECNOL, I-53100 SIENA, ITALY
GIORGI, G
论文数:
引用数:
h-index:
机构:
LANGER, T
论文数:
引用数:
h-index:
机构:
HAMON, M
MERAHI, N
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV SIENA, DIPARTIMENTO FARMACO CHIM TECNOL, I-53100 SIENA, ITALY
MERAHI, N
论文数:
引用数:
h-index:
机构:
EMERIT, BM
CAGNOTTO, A
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV SIENA, DIPARTIMENTO FARMACO CHIM TECNOL, I-53100 SIENA, ITALY
CAGNOTTO, A
SKORUPSKA, M
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV SIENA, DIPARTIMENTO FARMACO CHIM TECNOL, I-53100 SIENA, ITALY
SKORUPSKA, M
MENNINI, T
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV SIENA, DIPARTIMENTO FARMACO CHIM TECNOL, I-53100 SIENA, ITALY
MENNINI, T
PINTO, JC
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV SIENA, DIPARTIMENTO FARMACO CHIM TECNOL, I-53100 SIENA, ITALY
PINTO, JC
[J].
JOURNAL OF MEDICINAL CHEMISTRY,
1995,
38
(14)
: 2692
-
2704
[5]
[W(CO)5]-catalyzed endo- or exo-cycloisomerization reactions of 1,1-disubstituted 4-pentyn-1-ols:: Experimental and theoretical studies
Barluenga, J
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enrique Moles, E-33006 Oviedo, Spain
Barluenga, J
Diéguez, A
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enrique Moles, E-33006 Oviedo, Spain
Diéguez, A
Rodríguez, F
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enrique Moles, E-33006 Oviedo, Spain
Rodríguez, F
Fañanás, FJ
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enrique Moles, E-33006 Oviedo, Spain
Fañanás, FJ
Sordo, T
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enrique Moles, E-33006 Oviedo, Spain
Sordo, T
Campomanes, P
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enrique Moles, E-33006 Oviedo, Spain
Campomanes, P
[J].
CHEMISTRY-A EUROPEAN JOURNAL,
2005,
11
(19)
: 5735
-
5741
[6]
Tandem [W(CO)5]-catalyzed cycloisomerization-cyclopropanation reactions directed toward the synthesis of eight-membered carbocycles
Barluenga, J
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Unidad Asociada CSIC, Inst Univ Quim Organomet Enrique Moles, Oviedo 33006, Spain
Univ Oviedo, Unidad Asociada CSIC, Inst Univ Quim Organomet Enrique Moles, Oviedo 33006, Spain
Barluenga, J
Diéguez, A
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Unidad Asociada CSIC, Inst Univ Quim Organomet Enrique Moles, Oviedo 33006, Spain
Univ Oviedo, Unidad Asociada CSIC, Inst Univ Quim Organomet Enrique Moles, Oviedo 33006, Spain
Diéguez, A
Rodríguez, H
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Unidad Asociada CSIC, Inst Univ Quim Organomet Enrique Moles, Oviedo 33006, Spain
Univ Oviedo, Unidad Asociada CSIC, Inst Univ Quim Organomet Enrique Moles, Oviedo 33006, Spain
Rodríguez, H
Fañanás, FJ
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Unidad Asociada CSIC, Inst Univ Quim Organomet Enrique Moles, Oviedo 33006, Spain
Univ Oviedo, Unidad Asociada CSIC, Inst Univ Quim Organomet Enrique Moles, Oviedo 33006, Spain
Fañanás, FJ
[J].
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,
2005,
44
(01)
: 126
-
128
[7]
Gold- or platinum-catalyzed tandem cycloisomerization/Prins-type cyclization reactions
Barluenga, J
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Barluenga, J
Diéguez, A
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Diéguez, A
Fernández, A
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Fernández, A
Rodríguez, F
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Rodríguez, F
Fañanás, FJ
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Univ Oviedo, CSIC, Unidad Asociada, Inst Quim Organomet Enr Moles, E-33006 Oviedo, Spain
Fañanás, FJ
[J].
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,
2006,
45
(13)
: 2091
-
2093
[8]
BARLUENGA J, 2005, ANGEW CHEM, V117, P128
[9]
BARLUENGA J, 2006, ANGEW CHEM, V118, P2145
[10]
Tandem intramolecular hydroalkoxylation-hydroarylation reactions:: Synthesis of enantiopure benzofused cyclic ethers from the chiral pool
Barluenga, Jose
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Barluenga, Jose
Fernandez, Amadeo
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Fernandez, Amadeo
Satrustegui, Amaya
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Satrustegui, Amaya
Dieguez, Alejandro
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Dieguez, Alejandro
Rodriguez, Felix
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Rodriguez, Felix
Fananas, Francisco J.
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Univ Oviedo, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada, CSIC, E-33006 Oviedo, Spain
Fananas, Francisco J.
[J].
CHEMISTRY-A EUROPEAN JOURNAL,
2008,
14
(14)
: 4153
-
4156
←
1
2
3
4
5
6
→