- 188.8.131.52: Assign the R or S configuration to the chirality centers in the fou...
- 184.108.40.206: Draw Fischer projections of the four stereoisomeric 3-amino-2-butan...
- 220.127.116.11: One other stereoisomer of 3-amino-2-butanol is a crystalline solid....
- 18.104.22.168: Which stereoisomers of 1-bromo-2-chlorocyclopropane possess the sam...
Solutions for Chapter 7.11: Chiral Molecules with Two Chirality Centers
Full solutions for Organic Chemistry, | 9th Edition
Two or more forms of the same element that differ significantly in chemical and physical properties. (2.6)
A synthetic method that employs diethyl acetamidomalonate as the starting material and enables the preparation of racemic a-amino acids.
A compound containing a carboxylic acid group (COOH) as well as an amino group (NH2).
A self-contained electrochemical power source that contains one or more voltaic cells. (Section 20.7)
The conversion of a thioacetal into an alkane in the presence of Raney nickel.
A bimolecular b-elimination reaction.
Polymers that return to their original shape after being stretched.
Enantiomeric excess (ee)
The difference between the percentage of two enantiomers in a mixture
An organic compound that has an OR group attached to a carbonyl; it is the product of a reaction between a carboxylic acid and an alcohol. (Section 24.4)
frontier orbital theory
The analysis of a reaction using MO theory, where only the frontier orbitals (HOMO and LUMO) are considered.
ignal splitting in NMR
Spin-spin coupling with adjacent nuclei split NMR signals depending on the extent of coupling and the number of adjacent equivalent nuclei.
The vectors a, b, and c that define a crystal lattice. The position of any lattice point in a crystal can be represented by summing integer multiples of the lattice vectors. (Section 12.2)
A compound that possesses chirality centers and an internal plane of symmetry.
For a peptide chain,the end that contains the amino group.
In mass spectrometry, an odd molecular weight indicates an odd number of nitrogen atoms in the compound, while an even molecular weight indicates either an even number of nitrogen atoms or the absence of nitrogen.
The specifi c rotation of a mixture of enantiomers divided by the specifi c rotation of the enantiomerically pure substance (expressed as a percent). Optical purity is numerically equal to enantiomeric excess, but experimentally determined.
Polymers made up of repeating urethane groups, also sometimes called carbamate groups (!N!CO2!).
A six-membered cyclic hemiacetal form of a carbohydrate.
ribonucleic acid (RNA)
A polynucleotide in which ribose is the sugar component. (Section 24.10)
A conformation in which nearby groups in a Newman projection have a dihedral angle of 60°.
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