List of Contributors ........................................... XV
1 Introduction ................................................. 1
Li-Xin Dai and Xue-Long Hou
1.1 Foreword ................................................ 1
1.2 Planar Chirality of Ferrocenyl Ligands .................. 4
1.3 Derivatization of the Ferrocene Scaffold ................ 6
1.4 Stability, Rigidity and Bulkiness of the Ferrocene
Scaffold ................................................ 9
1.5 Outlook ................................................ 10
References .................................................. 11
2 Stereoselective Synthesis of Planar Chiral Ferrocenes ....... 15
Wei-Ping Deng, Victor Snieckus, and Costa Metallinos
2.1 Introduction ........................................... 15
2.2 Diastereoselective Directed ortho-Metalation of
Ferrocenes with Chiral Auxiliaries ..................... 19
2.3 Enantioselective Directed ortho-Metalation of
Ferrocenes with Chiral Bases ........................... 36
2.4 Enzymatic and Nonenzymatic Kinetic Resolutions ......... 40
2.5 Summary and Perspectives ............................... 42
2.6 Selected Experimental Procedures ....................... 44
References .................................................. 49
3 Monodentate Chiral Ferrocenyl Ligands ....................... 55
Ji-Bao Xia, Timothy F. Jamison, and Shu-Li You
3.1 Introduction ........................................... 55
3.2 Nickel-Catalyzed Asymmetric Reductive Coupling
Reactions .............................................. 55
3.3 Copper(I)-Catalyzed Asymmetric Allylic Alkylation
Reactions .............................................. 62
3.4 Asymmetric Suzuki-Miyaura Reactions .................... 64
3.5 Addition of Organoaluminum to Aldehydes and Enones ..... 65
3.6 Asymmetric Nucleophilic Catalysis ...................... 66
3.7 Conclusion and Perspectives ............................ 70
References .................................................. 70
4 Bidentate 1,2-Ferrocenyl Diphosphine Ligands ................ 73
Hans-Ulrich Blaser and Matthias Lotz
4.1 Introduction ........................................... 73
4.2 Type A Both PR2 Groups Attached to the Cp Ring ......... 74
4.3 Type В One PR2 Group Attached to the Cp Ring, one PR2
Group Attached to the α-Position of the Side Chain ..... 75
4.4 Type С One PR2 Group Attached to the Cp Ring, one PR2
Group Attached to the R-Position of the Side Chain ..... 83
4.5 Type D, One PR2 Group Attached to the Cp Ring, One
PR2 Group Attached to Other Positions of the Side
Chain .................................................. 85
4.6 Type E, Both PR2 Groups Attached to Side Chains ........ 87
References .................................................. 91
5 1,2-P,N-Bidentate Ferrocenyl Ligands ........................ 97
Yong Gui Zhou and Xue Long Hou
5.1 Introduction ........................................... 97
5.2 Asymmetric Hydrogenation and Asymmetric Transfer
Hydrogenation .......................................... 97
5.3 Formation of a C-C Bond ............................... 121
5.4 Cycloaddition Reactions ............................... 132
5.5 Miscellaneous Reactions ............................... 137
5.6 Conclusion and Perspectives ........................... 140
5.7 Experimental: Selected Procedures ..................... 140
References ................................................. 144
6 N,0-Bidentate Ferrocenyl Ligands ........................... 149
Anne Nijs, Olga García Mancheño, and Carsten Bolm
6.1 Introduction .......................................... 149
6.2 Addition of Organozinc Reagents to Aldehydes .......... 149
6.3 Addition to Aldehydes with Boron Reagents ............. 165
6.4 Other Transformations: Asymmetric Epoxidation ......... 168
6.5 Conclusion and Perspectives ........................... 169
6.6 Experimental: Selected Procedures ..................... 170
References ................................................. 173
7 Symmetrical 1,1'-Bidentate Ferrocenyl Ligands .............. 175
Wanbin Zhang and Delong Liu
7.1 Introduction .......................................... 175
7.2 Symmetrical l,l'-Disubstituted Ferrocenyl Ligands ..... 177
7.3 Symmetrical l,l',2,2'-Tetrasubstituted Ferrocenyl
Ligands ............................................... 193
7.4 Analogs of Ferrocenes: Symmetrical l,l'-Bidentate
Ruthenocenyl Ligands .................................. 203
7.5 Conclusion and Perspectives ........................... 208
7.6 Experimental: Selected Procedures ..................... 208
References ................................................. 211
8 Unsymmetrical 1,1-Bidentate Ferrocenyl Ligands ............. 215
Shu-Li You
8.1 Introduction .......................................... 215
8.2 Palladium-Catalyzed Asymmetric Allylic Substitution
Reaction .............................................. 215
8.3 Gold or Silver-Catalyzed Asymmetric Aldol Reactions ... 229
8.4 Asymmetric Hydrogenation .............................. 234
8.5 Asymmetric Cross-Coupling Reaction .................... 239
8.6 Asymmetric Heck Reaction .............................. 242
8.7 Miscellaneous ......................................... 244
8.8 Conclusion and Perspectives ........................... 250
8.9 Experimental: Selected Procedures ..................... 250
References ................................................. 253
9 Sulfur- and Selenium-Containing Ferrocenyl Ligands ......... 257
Juan C. Carretero, Javier Adrio, and Marta Rodríguez
Rivero
9.1 Introduction .......................................... 257
9.2 Asymmetric Allylic Substitution ....................... 258
9.3 Other Asymmetric Palladium-Catalyzed Reactions ........ 266
9.4 Gold-Catalyzed Reactions .............................. 268
9.5 Asymmetric Reductions ................................. 269
9.6 Asymmetric 1,2- and 1,4-Nucleophilic Addition ......... 270
9.7 Asymmetric Cycloaddition Reactions .................... 272
9.8 Asymmetric Nucleophilic Catalysis ..................... 276
9.9 Conclusion and Perspectives ........................... 277
9.10 Experimental: Selected Procedures ..................... 278
References ................................................. 280
10 Biferrocene Ligands ........................................ 283
Ryoichi Kuwano
10.1 Introduction .......................................... 283
10.2 Trans-Chelating Chiral Bisphosphines: TRAP ............ 284
10.3 2,2-Bis(diarylphosphino)-1,1-biferrocenes: BIFEP ...... 299
10.4 Miscellaneous Biferrocene-Based Chiral Ligands ........ 302
10.5 Conclusion ............................................ 303
References ................................................. 304
11 Applications of Aza- and Phosphaferrocenes and Related
Compounds in Asymmetric Catalysis .......................... 307
Nicolas Marion and Gregory C. Fu
11.1 Introduction .......................................... 307
11.2 Background on Aza- and Phosphaferrocenes .............. 308
11.3 Azaferrocenes in Catalysis ............................ 310
11.4 Phosphaferrocenes in Catalysis ........................ 324
11.5 Conclusions ........................................... 333
References ................................................. 333
12 Metallocyclic Ferrocenyl Ligands ........................... 337
Christopher J. Richards
12.1 Introduction .......................................... 337
12.2 Asymmetric Synthesis of Planar Chiral Metallocyclic
Complexes ............................................. 339
12.3 Stoichiometric Synthetic Applications of Scalemic
Planar Chiral Metallocyclic Complexes ................. 354
12.4 Asymmetric Catalysis with Scalemic Planar Chiral
Palladocyclic Complexes ............................... 355
12.5 Conclusion ............................................ 364
References ................................................. 364
A Show Case of the Most Effective Chiral Ferrocene Ligands
in Various Catalytic Reactions ............................. 369
A.l Asymmetric Allylic Substitution Reactions ............. 369
A.l.l Copper(I)-Catalyzed Asymmetric Allylic
Alkylation Reactions ........................... 369
A.1.2 Palladium-Catalyzed Asymmetric Allylic
Substitution Reactions ......................... 370
A.1.3 Generating π-Allyl Palladium Complex Through
the Reaction of Allene with Iodobenzene ........ 372
A.1.4 Regioselective Control Concerned with
Unsymmetrically 1,3-Disubstituted 2-Propenyl
Acetate ........................................ 372
A.1.5 Applications of Palladium-Catalyzed
Asymmetric Allylic Substitution Reaction ....... 375
A.2 Asymmetric Aldol Reactions ............................ 375
A.2.1 Gold-Catalyzed Asymmetric Aldol Reactions ...... 375
A.2.2 Silver-Catalyzed Asymmetric Aldol Reactions .... 376
A.2.3 Applications of Gold or Silver-Catalyzed
Asymmetric Aldol Reactions ..................... 376
A.3 Asymmetric Cycloaddition Reactions .................... 377
A.3.1 [3 + 2] Cycloaddition Reactions ................. 377
A.3.2 [4 + 2] Cycloaddition Reactions ................. 377
A.3.3 [3 + 2] Cycloaddition Reactions ................. 378
A.3.4 Asymmetric 1,3-Dipolar Cycloaddition of
Azomethine Ylides with N-Phenyl Maleimide ....... 378
A.3.5 [3 + 2] Cycloaddition of Alkynes with
Azomethine Imines ............................... 378
A.4 Asymmetric Hydrogenation .............................. 379
A.4.1 Asymmetric Hydrogenation of Alkenes (C = C) .... 379
A.4.2 Asymmetric Hydrogenation of Alkenes (or
C = N) ......................................... 383
A.4.3 Asymmetric Hydrogenation of Ketones (C = 0) .... 384
A.4.4 Asymmetric Hydroboration ....................... 385
A.4.5 Asymmetric Hydrosilylation Reaction ............ 385
A.4.6 Asymmetric Transfer Hydrogenation .............. 386
A.5 Pd-Catalyzed Asymmetric Heck Reaction ................. 386
A.6 Addition of Organozinc Reagents ....................... 387
A.6.1 Addition of Dialkylzinc to Aldehydes ........... 387
A.6.2 Addition of Diarylzinc to Aldehydes ............ 388
A.6.3 Addition of Dialkylzinc to C=N Bond ............ 388
A.6.4 Addition of Phenylacetylene to Aldehydes ....... 389
A.6.5 Addition to Aldehydes with Boron Reagents ...... 389
A.7 Asymmetric Rearrangement of Allylic Imidates .......... 390
A.7.1 Rearrangement of N-Arylbenzimidates ............ 390
A.7.2 Rearrangement of N-Aryl-trifluoracetimidate .... 390
A.7.3 Rearrangement with Added Nucleophiles .......... 391
A.8 Cu-Catalyzed Cyclopropanation ......................... 391
A.8.1 With Diphenylethene ............................ 391
A.8.2 With Aryl, Alkyl or Silylethene ................ 391
A.9 Coupling Reaction of Vinyl Bromide and
1-Phenylethylzinc Chloride ............................ 392
A.10 Enantioselective Intramolecular Aminopalladation ...... 392
A.11 Nickel-Catalyzed Asymmetric Three-Component Coupling
of Alkynes, Imines, and Organoboron Reagents .......... 392
A.12 Reactions with Ketenes ................................ 393
A.12.1 O-Acylation with Ketenes ....................... 393
A.12.2 Kinetic Resolution by O-Acylation .............. 393
A.12.3 N-Acylation with Ketenes ....................... 394
A.12.4 Kinetic Resolution by N-Acylation .............. 394
A.12.5 C-Acylation via Rearrangement .................. 394
A.12.6 Cycloadditions ................................. 395
A.12.7 Copper-Catalyzed Insertions of Diazo
Compounds ...................................... 395
A.12.8 Copper-Catalyzed Cycloadditions ................ 395
A.13 Ring Opening Reaction ................................. 396
A.13.1 Desymmetrization by Halogenations .............. 396
A.13.2 Ring Opening of Bicyclic Alkenes ............... 396
Index ...................................................... 397
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