Titlebook: Steric and Stereoelectronic Effects in Organic Chemistry; Veejendra K. Yadav Book 2021Latest edition The Editor(s) (if applicable) and The

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A(1,2) and A(1,3) Strains, reactions such as [2,3]- and [3,3]-sigmatropic shifts, intramolecular S.2 reactions, hydroboration, and enolate alkylation is highlighted. The high diastereoselectivity observed in the reactions of enolates derived from 4-substituted .-alkanoyl-1,3-oxazolidinones (Evans enolates) with electrophiles is also discussed.

Friction

,The Conservation of Orbital Symmetry Rules (Woodward–Hoffmann Rules),the symmetry characteristics of σ, σ*, π, and π* molecular orbitals. This is followed by a discussion of molecular orbitals and their symmetry characteristics for allyl cation, allyl radical, allyl anion, and 1,3-butadiene. The symmetry concept is applied to π. + π., π. + π., and electrocyclic ring closing and ring opening reactions.

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,The Overlap Component of the Stereoelectronic Effect vis-à-vis the Conservation of Orbital Symmetryurse of pericyclic reactions as exemplified in this chapter. The orbital overlap factor has been discussed with examples such as the thermal fragmentations of cyclopropanated and cyclobutanated .-3,6-dimethyl-3,6-dihydropyridazine, and [1,5] sigmatropic shifts in .-2-alkenyl-1-alkylcyclopropanes and .-2-alkenyl-1-alkylcyclobutanes.

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978-3-030-75624-6The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerl

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Steric and Stereoelectronic Control of Molecular Structures and Organic Reactions,ed. The application of the anomeric effect in 1,4-elimination reactions, including preservation of geometry of the newly created double bond, has been presented in detail. Brief discussions of the conformational profiles of thioacetals and azaacetals, and rate acceleration on account of σ., σ., σ., and σ. bonds have also been explained.

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丰富

Book 2021Latest editionreactivity features. This book is not only an indispensable resource for advanced undergraduate and graduate students studying the stereochemical aspects of organic reactions, but also a good reference book for all organic chemists in both industry and academia..