In stereochemistry, a stereocenter of a molecule is an atom (center), axis or plane that is the focus of stereoisomerism; that is, when having at least...

stereogenic element is a stereogenic center, or stereocenter. In the case of organic compounds, stereocenters most frequently take the form of a carbon atom...

(related) stereocenters and are not mirror images of each other. When two diastereoisomers differ from each other at only one stereocenter, they are epimers...

purpose of the CIP system is to assign an R or S descriptor to each stereocenter and an E or Z descriptor to each double bond so that the configuration...

a type of stereocenter. A chirality center is also called a chiral center or an asymmetric center. Some sources use the terms stereocenter, stereogenic...

the same, then there is no stereoisomer and the double bond is not a stereocenter, e.g. propene, CH3CH=CH2 where the two substituents at one end are both...

is assigned to the stereocenter if the direction of rotation is directed to the right. If one molecule contains several stereocenters, a locant must be...

3-aminopropanoic acid. Unlike its counterpart α-alanine, β-alanine has no stereocenter. In terms of its biosynthesis, it is formed by the degradation of dihydrouracil...

Second asterisks are placed by potential stereocenters as indicators (*). Third the pairs of each stereocenters R and S orientations are combined through...

two reactants have carbonyls adjacent to a pre-existing stereocenter, then the new stereocenters may form at a fixed orientation relative to the old. This...

Butan-2-yl (sec-butyl) group is chiral. The carbon atom at position 2 is a stereocenter. It has four different groups attached: −H, −CH3, −CH2−CH3, and −R (the...

describing a molecule's stereochemistry. They rank the atoms around a stereocenter in a standard way, allowing unambiguous descriptions of their relative...

are optically active. This means that despite containing two or more stereocenters, the molecule is not chiral. A meso compound is superposable on its...

Computed Properties Hydrogen Bond Donor Count 0 Defined Atom Stereocenter Count 7 Undefined Atom Stereocenter Count 1 Rotatable Bond Count 5...

Sa, in analogy to the traditional R/S for a traditional tetrahedral stereocenter. Axially chiral biaryl compounds are prepared by coupling reactions,...

share a framework isomerism. The aporphine alkaloids usually have a stereocenter. The (R)-configured glaucine can be synthesized from (S)-glaucine. Apomorphine...

octane. Its structural formula is CH3CH2CH(CH3)CH2CH2CH2CH3. It has one stereocenter. Its refractive index is 1.398 (20 °C, D).[citation needed] "3-METHYLHEPTANE...

transition state. For a compound that would otherwise be chiral due to a stereocenter, pyramidal inversion allows its enantiomers to racemize. The general...

stereocenters. In the image of RRR-α-tocopherol below, all three stereocenters are in the R form. However, if the middle of the three stereocenters were...

fragment was a chirally catalyzed ene reaction that installed the C15 stereocenter. Treatment of the terminal allyl group of compound 1 with ethyl glyoxylate...

constitutional isomers. 8 of these isomers have one stereocenter; 3 of them have two stereocenters. Achiral isomers: 2-Methylheptane 4-Methylheptane 3-Ethylhexane...

regioselective, and have the potential to form four new contiguous stereocenters. Azomethine ylides thus have high utility in total synthesis, and formation...

2-pentanol, and 3-methyl-2-butanol (methyl isopropyl carbinol), contain stereocenters, and are therefore chiral and optically active. The most important amyl...

mixture of stereoisomers during a non-stereospecific creation of a new stereocenter or during a non-stereospecific transformation of a pre-existing one....

of vancosamine (top) and epivancosamine (bottom). Note the differing stereocenter at carbon 4. Names IUPAC name (3S,4S,5S)-3-Amino-4,5-dihydroxy-3-methylhexanal...

(for the interconversion of existing stereocenters) and stereoselective ones (for the creation of new stereocenters), where also the optical activity of...

ruthenium catalyst and a chiral bisphosphine ligand sets the second stereocenter. The carboxylate is esterified by reaction with thionyl chloride to form...

All the double bonds are cis and the absolute configuration of the stereocenter is (S). Ectocarpene was isolated from algae Ectocarpus (order Ectocarpales)...

including of the serotonin 5-HT2A and 5-HT2C receptors. The compound has a stereocenter, and R-(−)-DOI is the more active stereoisomer. [125I]-R-(−)-DOI is used...

specific chiral stereocenter with the molecule, rather than a property of the molecule as a whole. A molecule having exactly one chiral stereocenter (usually...