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E-raamat: Stereoelectronic Effects - A Bridge Between Structure and Reactivity: A Bridge Between Structure and Reactivity [Wiley Online]

  • Formaat: 400 pages
  • Ilmumisaeg: 14-Oct-2016
  • Kirjastus: John Wiley & Sons Inc
  • ISBN-10: 1118906373
  • ISBN-13: 9781118906378
  • Wiley Online
  • Hind: 68,72 €*
  • * hind, mis tagab piiramatu üheaegsete kasutajate arvuga ligipääsu piiramatuks ajaks
  • Formaat: 400 pages
  • Ilmumisaeg: 14-Oct-2016
  • Kirjastus: John Wiley & Sons Inc
  • ISBN-10: 1118906373
  • ISBN-13: 9781118906378

Stereoelectronic Effects illustrates the utility of stereoelectronic concepts using structure and reactivity of organic molecules. This advanced textbook provides an up-to-date overview of the field, starting from the fundamental principles and presenting a large selection of modern examples of stereoelectronic effects in organic reactivity. Modern theoretical concepts are described in an accessible manner for students and experimentalists working in organic synthesis, medicinal chemistry and materials science; the background/concept part of the book is based on a wealth of computational and theoretical work but the mathematics behind the concepts is distilled in a general non-technical discussion of the role of stereoelectronic effects in chemistry.

Topics covered include:
• Effects of orbital overlap on reactivity
• Experimental and theoretical approaches for studies of stereoelectronic effects
• The fundamentals of stereoelectronic effects
• Hyperconjugative stereoelectronic effects
• Transition state stabilization
• Remote stereoelectronic effects
• Practical applciations of stereoelectronic effects in asymmetric catalysis, photochemical processes, bioorganic chemistry and biochemistry, inorganic and organometallic reactivity, supramolecular chemistry and materials science.

The aim of this book is to make life easier for students of organic chemistry and practicing organic chemists by providing them with a concise set of rules which govern interactions between molecules and between functional groups in molecules. These rules will offer a unifying framework for the understanding of molecular structure and reactivity.

Acknowledgement ix
Supplementary Material x
1 Introduction
1(7)
1.1 Stereoelectronic effects -- orbital interactions in control of structure and reactivity
1(2)
1.2 Orbital interactions in theoretical chemistry
3(1)
1.3 The birth of stereoelectronic concepts in organic chemistry
4(4)
References
6(2)
2 Direct Effects of Orbital Overlap on Reactivity
8(34)
2.1 Bond formation without bond breaking: types of overlap in two-orbital interactions
9(16)
2.1.1 Factors controlling σ-bond overlap
12(13)
2.2 Bond formation coupled with bond breaking
25(4)
2.2.1 Three-orbital interactions: stereoelectronic reasons for the preferred trajectories of intermolecular attack at a chemical bond
25(4)
2.3 Stereoelectronics of supramolecular interactions
29(13)
2.3.1 FMO interactions in intermolecular complexes
29(1)
2.3.2 Expanding the palette of supramolecular interactions: from H-bonding to Li-, halogen, pnictogen, chalcogen and tetrel binding
30(6)
References
36(6)
3 Beyond Orbital Overlap: Additional Factors Important for Orbital Interactions. Classifying Delocalizing Interactions
42(12)
3.1 Electronic count: two-electron, one-electron and three-electron bonds
43(5)
3.2 Isovalent vs. sacrificial conjugation
48(1)
3.3 Neutral, negative, and positive hyperconjugation
49(5)
References
52(2)
4 Computational and Theoretical Approaches for Studies of Stereoelectronic Effects
54(8)
4.1 Quantifying orbital interactions
54(2)
4.2 Localized orbitals from delocalized wavefunctions
56(6)
References
60(2)
5 General Stereoelectronic Trends -- Donors, Acceptors, and Chameleons
62(35)
5.1 Three types of delocalization:: conjugation, hyperconjugation, and σ-conjugation
62(1)
5.2 Geminal and vicinal interactions
63(1)
5.3 Stereoelectronic main rule: antiperiplanarity
64(4)
5.3.1 Effects of bond polarity
65(3)
5.3.2 Polarity-induced acceptor anisotropy
68(1)
5.4 Scales of donor and acceptor ability of orbitals: polarization, hybridization, and orbital energy effects
68(23)
5.4.1 Donors
68(13)
5.4.2 Acceptors
81(3)
5.4.3 Stereoelectronic chameleons: donors masquerading as acceptors
84(7)
5.5 Cooperativity of stereoelectronic effects and antiperiplanar lone pair hypothesis (ALPH) theory - several donors working together
91(1)
5.6 Summary
92(5)
References
92(5)
6 Stereoelectronic Effects with Donor and Acceptor Separated by a Single Bond Bridge: The Broad Spectrum of Orbital Contributions to Conformational Analysis
97(86)
6.1 σ/σ-Interactions
99(14)
6.1.1 Rotational barrier in ethane
99(6)
6.1.2 Axial/equatorial equilibrium in methylcyclohexane
105(5)
6.1.3 The gauche effect
110(3)
6.2 σ/π-Interactions
113(9)
6.2.1 "Eclipsed" and "staggered" conformations of alkenes -- stereoelectronic misnomers
114(3)
6.2.2 Carbonyls
117(4)
6.2.3 Strained bonds
121(1)
6.3 p/σ-Interactions
122(4)
6.3.1 Primary, secondary, tertiary carbocation stabilization
122(2)
6.3.2 Hyperconjomers of cyclohexyl cations
124(1)
6.3.3 β-Silicon effect and related β-effects
124(2)
6.4 n/σ-Interactions
126(21)
6.4.1 Anomeric effects
129(13)
6.4.2 Reverse anomeric effect
142(1)
6.4.3 "Anomeric effects without lone pairs": beyond the n → σ* interactions
143(4)
6.5 n/π-Interactions
147(20)
6.5.1 Esters and related carboxylic acid derivatives
147(10)
6.5.2 Vinyl ethers and enamines
157(10)
6.6 π/π-Interactions
167(16)
6.6.1 Hyperconjugation in alkynes and its relation to the "absence" of conjugation between two triple bonds in 1, 3-diynes
168(2)
References
170(13)
7 Stereoelectronic Effects with Donor and Acceptor Separated by a Vinyl Bridge
183(31)
7.1 σ/σ* interactions
184(1)
7.1.1 Cis-effect: the case of two o-acceptors
184(1)
7.2 σ/π interactions: allenes vs. alkenes
185(7)
7.2.1 Neutral systems
185(1)
7.2.2 Anions
186(1)
7.2.3 Positive conjugation and hyperconjugation in vinyl systems
187(1)
7.2.4 σ → π* deloclization in allenes: allenyl silanes in reactions with electrophiles
188(4)
7.3 Vinyl halides and their carbanions (transition from σC-H → σ*C-Hal to nc → σ*C-Hal interactions)
192(4)
7.3.1 Heteroatom-containing systems
195(1)
7.4 Diazenes and the isomerization of azo compounds
196(3)
7.5 Antiperiplanarity in coordinated bond-breaking and bond-forming processes: eliminations, fragmentations and additions
199(8)
7.6 Syn-periplanarity: the second best choice
207(7)
References
208(6)
8 Remote Stereoelectronic Effects
214(22)
8.1 Extended through space interactions: homoconjugation and homohyperconjugation
215(8)
8.1.1 Homoconjugation
215(2)
8.1.2 Homoanomeric effects
217(6)
8.1.3 Cross-hyperconjugation
223(1)
8.2 Double hyperconjugation and through-bond interactions
223(5)
8.3 Combined through-bond and through-space interactions
228(1)
8.4 Symmetry and cooperativity effects in cyclic structures
229(7)
8.4.1 Hyperaromaticity
229(1)
8.4.2 σ-Aromaticity
230(1)
8.4.3 Double aromaticity
231(1)
References
231(5)
9 Transition State Stabilization with Stereoelectronic Effects: Stereoelectronic Control of Reaction Bottlenecks
236(21)
9.1 Torquoselectivity
240(3)
9.2 Diastereoselection in nucl eophilic addition to carbonyl compounds and other π-systems
243(2)
9.3 Electrophilic addition to enamines
245(1)
9.4 Hyperconjugative assistance to alkyne bending and alkyne cycloadditions
246(2)
9.5 Negative conjugation -- donation from oxygen lone pairs to breaking bonds
248(3)
9.6 Remote lone pairs in radical reactions: fragmentations
251(6)
References
254(3)
10 Stereoelectronic Effects in Reaction Design
257(18)
10.1 Static stereoelectronics
257(2)
10.2 Dynamic stereoelectronics
259(16)
References
273(2)
11 Stereoelectronic Effects in Action: The Many Doors Opened by Orbital Interactions
275(47)
11.1 Gauche effect (σ → σ* interactions)
275(8)
11.2 Trans-effect -- the cousin of gauche effect in organometallic chemistry
283(1)
11.3 Anomeric effects (n → σ* interactions)
284(27)
11.3.1 Cooperativity and anticooperativity in anomeric systems
288(1)
11.3.2 Spectrum of armed and disarmed glycosides
289(5)
11.3.3 Restoring exo-anomeric effect in carbasugars
294(17)
11.4 Bioorganic chemistry and enzyme reactions
311(11)
References
316(6)
12 Probing Stereoelectronic Effects with Spectroscopic Methods
322(54)
12.1 Infrared spectroscopy
323(12)
12.1.1 Bohlmann effect
323(8)
12.1.2 Red-shifting hydrogen bonds -- an intermolecular version of the Bohlmann effect
331(4)
12.2 Nuclear magnetic resonance spectroscopy
335(33)
12.2.1 Stereoelectronic effects on chemical shifts
335(1)
12.2.2 Diamagnetic effects 1H NMR
336(2)
12.2.3 Paramagnetic effects in 13C NMR
338(2)
12.2.4 Through-space interactions - γ-substituent effects
340(2)
12.2.5 Stereoelectronic effects on coupling constants
342(26)
12.3 Conclusion
368(8)
References
368(8)
Index 376
Professor Igor V. Alabugin, Department of Chemistry and Biochemistry, Florida State University, USA Over the last 12 years, Professor Alabugin has published a body of work dedicated to stereoelectronic effects and applied these concepts in practice to the development of new organic reactions. The wide appeal of these concepts is reflected in a large number citations for his papers on the topic (the top three papers have well over 600 citations). His expertise is in broadly defined computational and experimental organic chemistry and its applications to medicinal chemistry and materials science.