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Summary
Summary
Catalysts are increasingly used by chemists engaged in fine chemical synthesis within both industry and academia. Today, there exists a huge choice of high-tech catalysts, which add enormously to the repertoire of synthetic possibilities. However, catalysts are occasionally capricious, sometimes difficult to use and almost always require both skill and experience in order to achieve optimal results. This series aims to be a practical help for advanced undergraduate, graduate and postgraduate students, as well as experienced chemists in industry and academia working in organic and organometallic synthesis.
The series features:
* Tested and validated procedures.
* Authoritative reviews on classes of catalysts.
* Assessments of all types of catalysts.
* Expertise from the Leverhulme Centre for Innovative Catalysis, Liverpool, UK.
The review section in the first volume of the series contains a report by Stanley M. Roberts on the integration of biotransformations into the catalyst portfolio.
The procedure section contains a wide variety of synthetic protocols, such as epoxidations of unsaturated ketones and esters, asymmetric reductions of carbon-oxygen double bonds, asymmetric hydrogenations of carbon-carbon double bonds and other types of reaction. The featured catalysts include a wide range of different materials such as poly-D-leucine, D-fructose-based dioxiranes, oxaborolidine borane, some important titanium and ruthenium complexes as well as baker's yeast. For each reaction there are one or several detailed protocols on how to prepare and employ the various catalysts.
Author Notes
Stanley M. Roberts is the editor of Hydrolysis, Oxidation and Reduction, Volume 1, published by Wiley.
Geraldine Poignant is the editor of Hydrolysis, Oxidation and Reduction, Volume 1, published by Wiley.
Table of Contents
Series Preface | p. xiii |
Preface to Volume 1 | p. xv |
Abbreviations | p. xvii |
Part I Review | p. 1 |
1 The Integration of Biotransformations into the Catalyst Portfolio | p. 3 |
1.1 Hydrolysis of esters, amides, nitriles and oxiranes | p. 4 |
1.2 Reduction reactions | p. 9 |
1.2.1 Reduction of carbonyl compounds | p. 10 |
1.2.2 Reduction of alkenes | p. 13 |
1.3 Oxidative transformations | p. 17 |
1.4 Carbon-carbon bond-forming reactions | p. 26 |
1.5 Conclusions | p. 37 |
References | p. 39 |
Part II Procedures | p. 47 |
2 General Information | p. 49 |
3 Asymmetric Epoxidation | p. 51 |
3.1 Introduction | p. 51 |
References | p. 52 |
4 Epoxidation of [alpha], [beta]-Unsaturated Carbonyl Compounds | p. 55 |
4.1 Non-asymmetric epoxidation | p. 55 |
4.2 Asymmetric epoxidation using poly-d-leucine | p. 56 |
4.2.1 Synthesis of leucine N-carboxyanhydride | p. 57 |
4.2.2 Synthesis of immobilized poly-d-leucine | p. 58 |
4.2.3 Asymmetric epoxidation of (E)-benzylideneacetophenone | p. 59 |
4.2.4 Conclusion | p. 61 |
4.3 Asymmetric epoxidation using chiral modified diethylzinc | p. 61 |
4.3.1 Epoxidation of 2-isobutylidene-1-tetralone | p. 62 |
4.3.2 Conclusion | p. 64 |
4.4 Asymmetric epoxidation of (E)-benzylideneacetophenone using the La-(R)-BINOL-Ph[subscript 3]PO/cumene hydroperoxide system | p. 66 |
4.4.1 Merits of the system | p. 68 |
References | p. 69 |
5 Epoxidation of Allylic Alcohols | p. 71 |
5.1 Non-asymmetric epoxidation | p. 72 |
5.2 Asymmetric epoxidation using a chiral titanium complex | p. 73 |
5.2.1 Epoxidation of cinnamyl alcohol | p. 74 |
5.2.2 Epoxidation of (E)-2-methyl-3-phenyl-2-propenol | p. 76 |
5.2.3 Epoxidation of (E)-2-hexen-1-ol | p. 78 |
5.2.4 Conclusion | p. 81 |
5.3 Asymmetric epoxidation of (E)-undec-2-en-1-ol using poly(octamethylene tartrate) | p. 81 |
5.3.1 Synthesis of branched poly (octamethylene-L-(+)-tartrate) | p. 81 |
5.3.2 Asymmetric epoxidation of (E)-undec-2-en-1-ol | p. 82 |
References | p. 86 |
6 Epoxidation of Unfunctionalized Alkenes and [alpha], [beta]-Unsaturated Esters | p. 87 |
6.1 Asymmetric epoxidation of disubstituted Z-alkenes using a chiral salen-manganese complex | p. 88 |
6.1.1 Epoxidation of (Z)-methyl styrene | p. 89 |
6.1.2 Epoxidation of (Z)-ethyl cinnamate | p. 91 |
6.1.3 Conclusion | p. 93 |
6.2 Asymmetric epoxidation of disubstituted E-alkanes using a D-fructose based catalyst | p. 94 |
6.2.1 Epoxidation of (E)-stilbene | p. 95 |
6.2.2 Conclusion | p. 97 |
6.3 Enantioselective epoxidation of (E)-[beta]-methylstyrene by D[subscript 2]-symmetric chiral trans-dioxoruthenium (VI) porphyrins | p. 98 |
6.3.1 Preparation of the trans-dioxoruthenium (VI) complexes with D[subscript 2]-symmetric porphyrins (H[subscript 2]L[superscript 1-3]) | p. 98 |
6.3.2 Enantioselective epoxidation of (E)-[beta]-methylstyrene | p. 99 |
6.3.3 Conclusion | p. 100 |
References | p. 101 |
7 Asymmetric Hydroxylation and Aminohydroxylation | p. 103 |
7.1 Asymmetric aminohydroxylation of 4-methoxystyrene | p. 103 |
7.1.1 Conclusion | p. 105 |
7.2 Asymmetric dihydroxylation of (1-cyclohexenyl)acetonitrile | p. 105 |
7.2.1 (R,R)-(1,2-Dihydroxycyclohexyl)acetonitrile acetonide | p. 107 |
7.2.2 Conclusion | p. 108 |
References | p. 108 |
8 Asymmetric Sulfoxidation | p. 109 |
8.1 Asymmetric oxidation of sulfides and kinetic resolution of sulfoxides | p. 109 |
8.1.1 Asymmetric oxidation of 4-bromothioanisole | p. 109 |
8.1.2 Kinetic resolution of racemic 4-bromophenyl methyl sulfoxide | p. 111 |
References | p. 113 |
9 Asymmetric Reduction of Ketones Using Organometallic Catalysts | p. 115 |
9.1 Introduction | p. 115 |
9.2 Asymmetric hydrogenation using a metal catalyst: [Ru((S)-BiNAP)] | p. 117 |
9.3 Asymmetric transfer hydrogenation of [beta]-ketoesters | p. 121 |
9.4 (S,S)-1,2-bis(tert-Butylmethylphosphino)ethane (BisP*): Synthesis and use as a ligand | p. 123 |
9.4.1 Synthesis of BisP* | p. 123 |
9.4.2 Synthesis of 1,2-bis(tert-butylmethylphosphino) ethaneruthenium bromide (BisP*-Ru) | p. 125 |
9.4.3 Synthesis of (R)-(-)-methyl 3-hydroxypentanoate using (BisP*-Ru) | p. 126 |
9.5 (1S,3R,4R)-2-Azanorbornylmethanol, an efficient ligand for ruthenium-catalysed asymmetric transfer hydrogenation of aromatic ketones | p. 127 |
9.5.1 Synthesis of ethyl(1S,3R,4R)-2-[(S)-1-phenylethylamino]-2-azabicyclo[2.2.1] hept-5-ene-3-carboxylate | p. 129 |
9.5.2 Synthesis of (1S,3R,4R)-3-hydroxymethyl-2-azabicyclo[2.2.1]heptane | p. 131 |
9.5.3 Ruthenium-catalysed asymmetric transfer hydrogenation of acetophenone | p. 133 |
References | p. 134 |
10 Asymmetric Reduction of Ketones Using Bakers' Yeast | p. 137 |
10.1 Bakers' yeast reduction of ethyl acetoacetate | p. 137 |
10.2 Enantioselective synthesis of cis-N-carbobenzyloxy-3-hydroxyproline ethyl ester | p. 140 |
10.2.1 Immobilization of bakers' yeast | p. 140 |
10.2.2 Bakers' yeast reduction of cis-N-carbobenzyloxy-3-ketoproline ethyl ester | p. 140 |
References | p. 142 |
11 Asymmetric Reduction of Ketones Using Nonmetallic Catalysts | p. 143 |
11.1 Introduction | p. 143 |
11.2 Oxazaborolidine borane reduction of acetophenone | p. 146 |
11.3 Oxazaphosphinamide borane reduction of chloroacetophenone | p. 148 |
11.4 Asymmetric reduction of chloroacetophenone using a sulfoximine catalyst | p. 151 |
11.4.1 Preparation of [beta]-hydroxysulfoximine borane | p. 151 |
11.4.2 Reduction of chloroacetophenone using the sulfoximine borane | p. 153 |
11.4.3 Summary | p. 155 |
11.5 Asymmetric reduction of bromoketone catalysed by cis-aminoindanol oxazaborolidine | p. 157 |
11.5.1 Synthesis of aminoindanol oxazaborolidine | p. 157 |
11.5.2 Asymmetric reduction of 2-bromo-(3-nitro-4-benzyloxy)acetophenone | p. 157 |
11.5.3 Conclusions | p. 159 |
11.5.4 Stereoselective reduction of 2,3-butadione monoxime trityl ether | p. 161 |
11.5.5 Stereoselective reduction of methyl 3-oxo-2-trityloxyiminostearate | p. 163 |
11.5.6 Stereoselective reduction of 1-(tert-butyldimethylsilyloxy)-3-oxo-2-trityloxyiminooctadecane | p. 164 |
11.6 Enantioselective reduction of ketones using N-arylsulfonyl oxazaborolidines | p. 166 |
11.6.1 Synthesis of N-(2-pyridinesulfonyl)-1-amino-2-indanol | p. 166 |
11.6.2 Asymmetric reduction of a prochiral ketone (chloroacetophenone) | p. 167 |
11.7 Reduction of ketones using amino acid anions as catalyst and hydrosilane as oxidant | p. 169 |
References | p. 172 |
12 Asymmetric Hydrogenation of Carbon-Carbon Double Bonds Using Organometallic Catalysts | p. 175 |
12.1 Introduction | p. 176 |
12.2 Hydrogenation of dimethyl itaconate using [Rh((S,S)-Me-BPE)] | p. 177 |
12.3 Hydrogenation of an [alpha]-amidoacrylate using [Rh((R,R)-Me-DuPHOS)] | p. 179 |
12.4 Hydrogenation of an [alpha]-amidoacrylate using [Rh(B[3.2.0]DPO)] complexes | p. 180 |
12.4.1 Preparation of (COD)[subscript 2] Rh[superscript +]BF[subscript 4 superscript -] | p. 180 |
12.4.2 Preparation of the bisphosphinite ligand | p. 182 |
12.4.3 Asymmetric reduction of [alpha]-acetamido cinnamic acid | p. 184 |
12.5 Hydrogenation of enol carbonates and 4-methylene-N-acyloxazolidinone using [Rh((R)-BiNAP)] complexes | p. 186 |
12.5.1 Synthesis of (S)-4,4,5-trimethyl-1, 3-dioxolane-2-one | p. 186 |
12.5.2 Synthesis of (S)-2-methyl-2,3-butanediol | p. 187 |
12.5.3 Preparation of optically active N-acyloxazolidinones | p. 188 |
12.5.4 Synthesis of (R)-N-propionyl-4,5,5-trimethyl-1, 3-oxazolidin-2-one | p. 189 |
12.6 Enantioselective ruthenium-catalyzed hydrogenation of vinylphosphonic acids | p. 190 |
12.6.1 Synthesis of chiral Ru(II) catalysts | p. 190 |
12.6.2 Asymmetric hydrogenation of vinylphosphonic acids carrying a phenyl substituent at C[subscript 2] | p. 191 |
12.6.3 Asymmetric reduction of a vinylphosphonic acid carrying a naphthyl substituent at C[superscript 2] | p. 192 |
12.6.4 Scope of the hydrogenation reaction | p. 193 |
12.7 Synthesis of a cylindrically chiral diphosphine and asymmetric hydrogenation of dehydroamino acids | p. 194 |
12.7.1 Preparation of (R,R)-1,1'-bis([alpha]-hydroxypropyl) ferrocene | p. 195 |
12.7.2 Preparation of (R,R)-1,1'-bis [alpha-(dimethylamino)propyl]ferrocene | p. 196 |
12.7.3 Preparation of (R,R,[subscript p]S,[subscript p]S)-1,1'-bis [alpha-(dimethylamino)propyl]-2,2'-bis (diphenyl-phosphino)ferrocene | p. 197 |
12.7.4 Preparation of (R,R,[subscript p]S,[subscript p]S)-1,1'-bis [alpha-acetoxypropyl)-2,2'-bis(diphenyl-phosphino)ferrocene | p. 198 |
12.7.5 Preparation of ([subscript p]S,[subscript p]S)-1, 1'-bis (diphenylphosphino)-2,2'-bis(1-ethylpropyl) ferrocene [(S,S)-3-Pt-FerroPHOS] | p. 199 |
12.7.6 Preparation of [(COD)Rh(([subscript p]S, [subscript p]S)-1, 1'-bis(diphenylphosphino)-2,2'-bis (1-ethylpropyl)ferrocene superscript +]BF[superscript - subscript 4] | p. 200 |
12.7.7 Asymmetric hydrogenation of [alpha]-acetamido cinnamic acid | p. 201 |
12.8 Synthesis and application of diamino FERRIPHOS as ligand for enantioselective Rh-catalysed preparation of chiral [alpha]-amino acids | p. 202 |
12.8.1 Synthesis of 1,1'-di(benzoyl)ferrocene | p. 202 |
12.8.2 Synthesis of (S,S)-1,1'-bis ([alpha]-hydroxyphenylmethyl)ferrocene | p. 204 |
12.8.3 Synthesis of (S,S)-1,1'-bis ([alpha]-acetoxyphenylmethyl)ferrocene | p. 205 |
12.8.4 Synthesis of (S,S)-1,1'-bis([alpha]-N,N-dimethylaminophenylmethyl)ferrocene | p. 206 |
12.8.5 Synthesis of ([alpha]S, [alpha]'S)-1,1'-bis([alpha]-N, N-dimethylaminophenylmethyl)-(R,R)-1,1'bis(diphenylphosphino)ferrocene | p. 207 |
12.8.6 Asymmetric hydrogenation of methyl-(Z)-3-phenyl-2-methyl-carboxamido-2-propenoate using (S)-(R)-diamino FERRIPHOS as chiral ligand | p. 209 |
References | p. 210 |
13 Employment of Catalysts Working in Tandem | p. 213 |
13.1 A one-pot sequential asymmetric hydrogenation utilizing Rh(I)- and Ru(II)-catalysts | p. 213 |
13.1.1 Synthesis of ethyl (Z)-4-acetamido-3-oxo-5-phenyl-4-pentenoate | p. 213 |
13.1.2 Asymmetric hydrogenation of ethyl 4-acetamido-3-oxo-5-phenyl-4-pentenoate | p. 214 |
References | p. 217 |
Index | p. 219 |