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... 11 KB (1,248 words) - 09:48, 3 April 2024 |
Diastereomer (section Multiple stereocenters) (related) stereocenters and are not mirror images of each other. When two diastereoisomers differ from each other at only one stereocenter, they are epimers... 9 KB (1,089 words) - 04:06, 15 April 2024 |
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... 25 KB (2,838 words) - 06:25, 23 January 2024 |
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... 38 KB (4,057 words) - 21:53, 6 April 2024 |
a type of stereocenter. A chirality center is also called a chiral center or an asymmetric center. Some sources use the terms stereocenter, stereogenic... 23 KB (2,579 words) - 11:49, 26 April 2024 |
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... 8 KB (874 words) - 22:07, 1 March 2024 |
Second asterisks are placed by potential stereocenters as indicators (*). Third the pairs of each stereocenters R and S orientations are combined through... 57 KB (4,422 words) - 23:12, 12 April 2024 |
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... 21 KB (2,426 words) - 00:22, 19 January 2024 |
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... 59 KB (7,402 words) - 01:56, 17 March 2024 |
analogs include diphenhydramine, and doxylamine. Pheniramine contains a stereocenter and can exists as either of two enantiomers. The pharmaceutical drug... 6 KB (376 words) - 03:15, 2 February 2024 |
ruthenium catalyst and a chiral bisphosphine ligand sets the second stereocenter. The carboxylate is esterified by reaction with thionyl chloride to form... 7 KB (526 words) - 15:48, 25 March 2024 |
with 70% lower rate of retrograde ejaculation. Alfuzosin contains a stereocenter, so is chiral, with two enantiomeric forms, (R)- and (S)-alfuzosin. The... 7 KB (415 words) - 20:10, 14 April 2023 |
are optically active. This means that despite containing two or more stereocenters, the molecule is not chiral. A meso compound is superposable on its... 5 KB (607 words) - 00:50, 2 October 2023 |
Simplified overview with a stereocenter... 9 KB (958 words) - 06:34, 11 February 2024 |
C-C distances. The energy barrier for the nitrogen inversion of the stereocenter is about 7 kcal/mol for a trialkylamine. The interconversion has been... 34 KB (3,533 words) - 23:11, 9 March 2024 |
needed] Cholesterol has 256 stereoisomers that arise from its eight stereocenters, although only two of the stereoisomers have biochemical significance... 79 KB (8,457 words) - 11:32, 21 April 2024 |
mixture of stereoisomers during a non-stereospecific creation of a new stereocenter or during a non-stereospecific transformation of a pre-existing one.... 8 KB (1,006 words) - 18:00, 19 January 2024 |