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2. Introduction to Chirality and Chiral Centers - Socratic

   socratic.org/.../introduction-to-chirality-and-chiral-centers

   A chiral centre is an atom that has four different groups bonded to it in such a manner that it has a nonsuperimposable mirror image. The term "chiral centre" has been replaced by the term chirality centre. In the molecule below, the carbon atom is a chirality centre. It has four different groups attached, and the two structures are ...

3. How can I find chiral centers in ring structures? | Socratic

   socratic.org/questions/how-can-i-find-chiral-centers-in-the-ring-structures

   Here's one way to do it. > Assume that you have to find the chiral centres in 3-aminocyclohexanol. (Adapted from Sigma-Aldrich) Here are the steps to find the chiral centres. Step 1: Ignore all atoms that cannot be chiral centres. These include "CH"_2, "CH"_3, and "NH"_2 groups, oxygens, halogens, and any atom that is part of a double or triple bond. That eliminates every atom except "C-1" and ...

4. Finding R and S for Chiral Centers - Organic Chemistry - Socratic

   socratic.org/.../r-and-s-configurations/finding-r-and-s-for-chiral-centers

   To determine whether the chirality center is R or S you have to first prioritize all four groups connected to the chirality center. Then, rotate the molecule so that the fourth priority group is on a dash (pointing away from you). Finally, determine whether the sequence 1-2-3 is (R) clockwise or (S) counterclockwise. Hope this helps.

5. How to identify a compound as chiral or achiral

   chemistry.stackexchange.com/.../how-to-identify-a-compound-as-chiral-or-achiral

   11. Look for carbons with four different groups attached to identify potential chiral centers. Draw your molecule with wedges and dashes and then draw a mirror image of the molecule. If the molecule in the mirror image is the same molecule, it is achiral. If they are different molecules, then it is chiral.

6. Identifying chiral centers - Chemistry Stack Exchange

   chemistry.stackexchange.com/questions/31290

   5. Take a look at your carbon circled in red, it has a hydrogen on it giving it four different groups. Now look at the C circled in blue. There is no hydrogen attached to that carbon because it already has four bonds (two to the O, one to the OH, and one to the rest of the molecule.) Therefore it only has three substituent groups attached and ...

7. Chiral and Achiral Molecules - Organic Chemistry - Socratic

   socratic.org/organic-chemistry-1/r-and-s-configurations/chiral-and-achiral...

   A molecule is considered chiral if there exists another molecule that is of identical composition but which is arranged in a non-superposable mirror image. Also the presence of an asymmetric carbon atom is often the feature that causes chirality in molecules. Two mirror images of a chiral molecule are called enantiomers or optical isomers.

8. How many chiral centers are there in cholesterol? | Socratic

   socratic.org/questions/how-many-chiral-centers-are-there-in-cholesterol

   There are eight chiral centres in cholesterol. > The structure of cholesterol with its numbering is shown below. (Adapted from en.wikipedia.org) Remember that bond-line structures don't show the hydrogen atoms that are attached to carbon. There is no internal plane of symmetry, so every carbon atom is different. Each chiral carbon must have four different groups. I have circled the chiral ...

9. How can I draw and identify the chiral centers of 5-deoxyribose?

   socratic.org/questions/how-can-i-draw-and-identify-the-chiral-centers-of-5-de...

   Help. Step 1. Draw ribose. Step 2. Convert it to 5-deoxyribose Remove the O atom from the OH group at C-5. The CH₂OH group becomes a CH₃ group. Step 3. Identify the chiral centres. The atoms with four different groups are C-2, C-3, and C-4 (the ones with OH groups).

10. How can I draw and identify the chiral centers of galactose?

    socratic.org/questions/how-can-i-draw-and-identify-the-chiral-centers-of-galactose

    The easiest way is to draw galactose as a Fischer projection. Galactose is an aldohexose. The general formula is HOCH₂ (CHOH)₄CHO. It has four chiral centres: the C atoms in the CHOH groups. Since there are 4 chiral centres, there are2^4 = 16 stereoisomers. We can limit ourselves to the 8 D isomers. The other 8 isomers are their L enantiomers.

11. How can I draw and identify the chiral centers of ribose?

    socratic.org/questions/how-can-i-draw-and-identify-the-chiral-centers-of-ribose

    1 Answer. First, you draw the structure of ribose. Then you identify the chiral centres. The carbons with four different groups are C−2, C−3, and C−4 (the ones with horizontal wedges). First, you draw the structure of ribose. Then you identify the chiral centres. The carbons with four different groups are "C"-2, "C"-3, and "C"-4 (the ones ...