Chapter 11 Introduction to Organic Chemistry Part 2
... 5. The two isomers, configurations (a) and (b), are enantiomers because each molecule contains two stereogenic centers (asymmetric carbon atoms) and their mirror images are non-superimposable to each other. 6. A. ...
... 5. The two isomers, configurations (a) and (b), are enantiomers because each molecule contains two stereogenic centers (asymmetric carbon atoms) and their mirror images are non-superimposable to each other. 6. A. ...
3. Organic Compounds: Alkanes and
... Methyl groups are on opposite faces of the ring One trans conformation has both methyl groups equatorial and only a gauche butane interaction between methyls (3.8 kJ/mol) and no 1,3-diaxial interactions The ring-flipped conformation has both methyl groups axial with four 1,3diaxial interactions Ster ...
... Methyl groups are on opposite faces of the ring One trans conformation has both methyl groups equatorial and only a gauche butane interaction between methyls (3.8 kJ/mol) and no 1,3-diaxial interactions The ring-flipped conformation has both methyl groups axial with four 1,3diaxial interactions Ster ...
Stereochemistry of Alkanes and Cycloalkanes
... Methyl groups are on opposite faces of the ring One trans conformation has both methyl groups equatorial and only a gauche butane interaction between methyls (3.8 kJ/mol) and no 1,3-diaxial interactions The ring-flipped conformation has both methyl groups axial with four 1,3diaxial interactions Ster ...
... Methyl groups are on opposite faces of the ring One trans conformation has both methyl groups equatorial and only a gauche butane interaction between methyls (3.8 kJ/mol) and no 1,3-diaxial interactions The ring-flipped conformation has both methyl groups axial with four 1,3diaxial interactions Ster ...
Organic Chemistry (I) chapter 3 alkanes
... A. Product B will be formed faster, but product A would predominate at equilibrium if both reactions are reversible. B. Product A will be formed faster, and product A would predominate at equilibrium if both reactions are reversible. C. Product B will be formed faster, and product B would predominat ...
... A. Product B will be formed faster, but product A would predominate at equilibrium if both reactions are reversible. B. Product A will be formed faster, and product A would predominate at equilibrium if both reactions are reversible. C. Product B will be formed faster, and product B would predominat ...
Conformations
... Substituted cyclohexanes: Methylcyclohexane has two conformers, one where the methyl is axial, one where it is equatorial. The axial conformer is less stable by 1.8 kcal/mol due to the 1,3-diaxial interactions between the axial methyl and the axial hydrogens two carbons away. This is a type of steri ...
... Substituted cyclohexanes: Methylcyclohexane has two conformers, one where the methyl is axial, one where it is equatorial. The axial conformer is less stable by 1.8 kcal/mol due to the 1,3-diaxial interactions between the axial methyl and the axial hydrogens two carbons away. This is a type of steri ...
730-2005 topics
... Conformations of terminal alkenes, carbonyl compounds (aldehydes and ketones) Conformations of dienes, enals and enones Conformations of esters Conformations of amides - Relationship between K and free energy difference between Z and E amides - How to calculate K from Go ( also see later under A v ...
... Conformations of terminal alkenes, carbonyl compounds (aldehydes and ketones) Conformations of dienes, enals and enones Conformations of esters Conformations of amides - Relationship between K and free energy difference between Z and E amides - How to calculate K from Go ( also see later under A v ...
T. V. RajanBabu Chemistry, 730 Autumn 1997
... Conformational, Steric and Stereoelectronic Effects Conformation of ethane, Pitzer strain Conformation of butane and van der Waals and gauche interactions Conformations of CH3XHn, ethers, amines, alcohols Conformations of terminal alkenes, carbonyl compounds (aldehydes and ketones) Conformations of ...
... Conformational, Steric and Stereoelectronic Effects Conformation of ethane, Pitzer strain Conformation of butane and van der Waals and gauche interactions Conformations of CH3XHn, ethers, amines, alcohols Conformations of terminal alkenes, carbonyl compounds (aldehydes and ketones) Conformations of ...
TV RajanBabu Chemistry, 730 Autumn 1997
... Conformations of amides - Relationship between K and free energy difference between Z and E o amides ( also see later under A values) Conformational analysis of cyclic compounds - cyclohexanes, Chair, boat, twist conformations proof Substituted cyclohexanes - ‘A’ values of various groups - how to de ...
... Conformations of amides - Relationship between K and free energy difference between Z and E o amides ( also see later under A values) Conformational analysis of cyclic compounds - cyclohexanes, Chair, boat, twist conformations proof Substituted cyclohexanes - ‘A’ values of various groups - how to de ...
TV RajanBabu Chemistry, 730 Autumn 1997
... Conformations of amides - Relationship between K and free energy difference between Z and E amides - How to calculate K from Go ( also see later under A values) Conformational analysis of cyclic compounds - cyclohexanes, chair, boat, twist conformations - proof Substituted cyclohexanes - ‘A’ values ...
... Conformations of amides - Relationship between K and free energy difference between Z and E amides - How to calculate K from Go ( also see later under A values) Conformational analysis of cyclic compounds - cyclohexanes, chair, boat, twist conformations - proof Substituted cyclohexanes - ‘A’ values ...
FULL PAPER Observations on the Influence of Precursor
... achieved already in the early and mid-1980s by Still and coworkers13 and molecular mechanics calculations have been applied to predict the most productive precursors of cyclic peptides.14 More recently, conformational and configurational pre-organization in macrocyclization has been studied, e.g. fo ...
... achieved already in the early and mid-1980s by Still and coworkers13 and molecular mechanics calculations have been applied to predict the most productive precursors of cyclic peptides.14 More recently, conformational and configurational pre-organization in macrocyclization has been studied, e.g. fo ...
Chem 226 — Problem Set #2
... of them is the bottom group attached to its ring-carbon, while the other one is the top group attached to its ring-carbon. ...
... of them is the bottom group attached to its ring-carbon, while the other one is the top group attached to its ring-carbon. ...
Study_guide_2010-01
... ROBINSON ANNULATION MECHANISM AND SYNTHETIC PLANNING Conjugate reductions and selectivity Hard vs. Soft nucleophiles and electrophiles: understanding polarizability by considering electronegativity, electron screening, and delocalization Other nucleophiles for conjugate additions: organocuprates, th ...
... ROBINSON ANNULATION MECHANISM AND SYNTHETIC PLANNING Conjugate reductions and selectivity Hard vs. Soft nucleophiles and electrophiles: understanding polarizability by considering electronegativity, electron screening, and delocalization Other nucleophiles for conjugate additions: organocuprates, th ...
Word document format
... In the above reaction, you must nitrate the ring first, since a methyl group is an ortho/para director. After nitration, oxidize the methyl group to a carboxylic acid. Notice that oxidation, followed by nitration versus nitration followed by oxidation gave very different products. 6. You must practi ...
... In the above reaction, you must nitrate the ring first, since a methyl group is an ortho/para director. After nitration, oxidize the methyl group to a carboxylic acid. Notice that oxidation, followed by nitration versus nitration followed by oxidation gave very different products. 6. You must practi ...
Cycloalkanes - faculty at Chemeketa
... Decalin consists of two cyclohexane rings joined to share two carbon atoms (the bridgehead carbons, C1 and C6) and a common bond Two isomeric forms of decalin: trans fused or cis fused In cis-decalin hydrogen atoms at the bridgehead carbons are on the same face of the rings In trans-decalin, t ...
... Decalin consists of two cyclohexane rings joined to share two carbon atoms (the bridgehead carbons, C1 and C6) and a common bond Two isomeric forms of decalin: trans fused or cis fused In cis-decalin hydrogen atoms at the bridgehead carbons are on the same face of the rings In trans-decalin, t ...
Study guide/lecture topics
... Cyclohexane conformations and substituent A-values Stereoselective reactions of sp2-substituted cyclohexanes ...
... Cyclohexane conformations and substituent A-values Stereoselective reactions of sp2-substituted cyclohexanes ...
Lecture #
... Cyclohexane conformations and substituent A-values Stereoselective reactions of sp2-substituted cyclohexanes ...
... Cyclohexane conformations and substituent A-values Stereoselective reactions of sp2-substituted cyclohexanes ...
Organic Chemistry III Laboratory
... During the second week’s lab period, the yeast reactions will be worked up and the products isolated by extraction and purified by filtering the mixture through a short column of silica gel. After removing the solvent, the resulting product mixtures can be characterized by GC, 1H-NMR, and COSY spec ...
... During the second week’s lab period, the yeast reactions will be worked up and the products isolated by extraction and purified by filtering the mixture through a short column of silica gel. After removing the solvent, the resulting product mixtures can be characterized by GC, 1H-NMR, and COSY spec ...
Nugget
... The Tröger’s base skeleton is a rigid framework containing two chiral nitrogen atoms at bridgehead positions. Under acid catalysis, the ring system undergoes inversion, but two mechanisms for the inversion have been proposed Our primary goal is to use symmetrically substituted chiral Tröger’s bases ...
... The Tröger’s base skeleton is a rigid framework containing two chiral nitrogen atoms at bridgehead positions. Under acid catalysis, the ring system undergoes inversion, but two mechanisms for the inversion have been proposed Our primary goal is to use symmetrically substituted chiral Tröger’s bases ...
Exam I - Chemistry With BT
... experiments on cis-1,3-dimethylcyclohexane and on trans-1,3-dimethylcyclohexane. However, instead of writing everything in their lab note-books, they tabulate it on a sheet of paper, which subsequently goes missing. They do remember the H(combustion) values to be different for their samples. In ord ...
... experiments on cis-1,3-dimethylcyclohexane and on trans-1,3-dimethylcyclohexane. However, instead of writing everything in their lab note-books, they tabulate it on a sheet of paper, which subsequently goes missing. They do remember the H(combustion) values to be different for their samples. In ord ...
Chapter 20 Carbohydrates
... • Glycosides are stable in water and aqueous base, but like other acetals, are hydrolyzed in aqueous acid to an alcohol and a monosaccharide. • Glycosides are named by listing the alkyl or aryl group bonded to oxygen followed by the name of the carbohydrate in which the ending -e is replaced by ide. ...
... • Glycosides are stable in water and aqueous base, but like other acetals, are hydrolyzed in aqueous acid to an alcohol and a monosaccharide. • Glycosides are named by listing the alkyl or aryl group bonded to oxygen followed by the name of the carbohydrate in which the ending -e is replaced by ide. ...
effective: september 2003
... given the formulas of two compounds, list the types of intermolecular forces that apply to each molecule, and predict which will have the higher boiling point, or heat of vaporization. ...
... given the formulas of two compounds, list the types of intermolecular forces that apply to each molecule, and predict which will have the higher boiling point, or heat of vaporization. ...
Chapter 4 Alkanes
... • The Baeyer strain theory was formulated when it was thought that rings were flat. It states that larger rings would be very highly strained, as their bond angles would be very different from the optimum 109.5°. • It turns out that cycloalkanes with more than three C atoms in the ring are not flat ...
... • The Baeyer strain theory was formulated when it was thought that rings were flat. It states that larger rings would be very highly strained, as their bond angles would be very different from the optimum 109.5°. • It turns out that cycloalkanes with more than three C atoms in the ring are not flat ...
