Read e-book online Topics in Stereochemistry, Volume 10 PDF

By Ernest L. Eliel, Samuel H. Wilen, Norman L. Allinger

ISBN-10: 0470147199

ISBN-13: 9780470147191

ISBN-10: 0471043443

ISBN-13: 9780471043447

Content:

Show description

Read or Download Topics in Stereochemistry, Volume 10 PDF

Similar physical chemistry books

Molecular Theory of Solvation by F. Hirata PDF

Molecular thought of Solvation offers the hot growth within the statistical mechanics of molecular drinks utilized to the main interesting difficulties in chemistry at the present time, together with chemical reactions, conformational balance of biomolecules, ion hydration, and electrode-solution interface. The continuum version of "solvation" has performed a dominant function in describing chemical techniques in answer over the last century.

Download PDF by S. F. Sun: Physical Chemistry of Macromolecules: Basic Principles and

Integrating insurance of polymers and organic macromolecules right into a unmarried textual content, actual Chemistry of Macromolecules is thoroughly dependent to supply a transparent and constant source for novices and pros alike. the fundamental wisdom of either biophysical and actual polymer chemistry is roofed, besides vital phrases, simple structural homes and relationships.

Advances in Chemical Physics Volume 140 - download pdf or read online

This sequence presents the chemical physics box with a discussion board for serious, authoritative reviews of advances in each zone of the self-discipline.

Read e-book online Catalysis of Organic Reactions (Chemical Industries) PDF

This article deals authoritative contributions from approximately 2 hundred leaders within the box and new how to increase catalytic reactions. "Catalysis of natural Reactions" covers ways for designing, enhancing, and changing catalysts for greater functionality, functionality, and balance, tactics to minimize spinoff formation, and inexpensive possible choices for the hydrogenation of natural compounds.

Extra resources for Topics in Stereochemistry, Volume 10

Example text

Consequently it was suggested (35) that to discuss such cases in terms of well-defined "envelopes" or "half-chairs" with "equatorial" or "axial" substituents probably leads to gross oversimplification and, in the hands of the uninitiated, to erroneous interpretations. C. 0]decane (perhydroa z u l e n e s 1 6 , 1 7 ) (37). Boyd and co-workers (37) have used f o r c e - f i e l d c a l c u l a - t i o n s w i t h energy minimization t o i n v e s t i g a t e , among o t h e r compounds, s t r a i n e d c y c l i c hydrocarbons, t h e c r i t e r i o n o f s u c c e s s b e i n g , a s i s u s u a l l y t h e c a s e , t h e agreement of c a l c u l a t e d h e a t s o f formation (hence s t r a i n e n e r g i e s ) w i t h e x p e r i mental v a l u e s ( s e e Table 4 f o r s t r u c t u r a l p a r a m e t e r s ) .

Benzion Fuchs 53 t h a t such simple c o r r e l a t i o n s (185) a r e probably i n e r r o r , due t o t h e a l r e a d y mentioned d e p a r t u r e from t r i g o n a l symmetry i n such systems. Conformational arguments have a l s o been used i n chemical s t u d i e s , such a s t h e s t e r e o c h e m i s t r y of e n o l i z a t i o n of 1 7 - k e t o s t e r o i d s (186b) and t h e e q u i l i b r a t i o n of 2-hydroxyA-norcholestanol ( 1 8 9 ) . E x t e n s i v e ORD and CD s t u d i e s of A-nor and D-ring k e t o n e s have been performed (190) w i t h r e a s o n i n g a l o n g l i n e s s i m i l a r t o t h o s e used by Ouannes and Jacqy$s f o r s u b s t i t u t e d c y c l o pentanones ( 3 9 ) .

The trans-lI2-dihalogen compounds 57 seem to prefer "diaxial" conformations (159a,b). The epimeric 1-indanols have also been studied (159~). 5 7 E. 0]hexane (11). Its basic conformation is imposed to the extent that the fusion must be cis and the fivemembered ring constrained to an envelope, but it can, in principle, choose between a chair or a boat conformation. It turns out that the latter is the actual form of occurrence for virtually all derivatives (58-65) that have been investigated structurally.

Download PDF sample

Topics in Stereochemistry, Volume 10 by Ernest L. Eliel, Samuel H. Wilen, Norman L. Allinger


by Kenneth
4.1

Rated 4.01 of 5 – based on 12 votes

About admin