Stereochemistry Definition and 15 Threads

The answer to this question are the ones I've marked as shown above. But I'm confused as to how? The first option is okay since it has a chiral carbon with no plane or line of symmetry and shows geometric isomerism too. In the third option, the compound shows Geometrical isomerism but i fail to...

Homework Statement I just have a problem with (A) & (B) The attempt at a solution Analysing all possible products; (A) can give 1-pentene (minor) + 2-pentene (major). But you also have the E-Z diastereomers of 2-pentene. So that's total 3 possible products. (B) will give only the...

Homework Statement *How many halogens will be removed in the following E2 reactions combined?* The Attempt at a Solution The question's language isn't error free. So, looking at the options, assuming it's *How many halogens will be removed in the following E2 reactions combined?*, the chair...

Homework Statement [/B] How many distinct stereoisomers exist for the hexadecanoic acid and oleic acid, respectively? Please choose from one of the following options. 1, 1 1, 2 2, 2 2, 4 Homework Equations None The Attempt at a Solution If you look at the following images of hexadecanoic...

Can anyone explain why cholesterol has a stereocenter at carbon 2? http://www.chemguide.co.uk/basicorg/isomerism/cholesterol2.gif The ring attached right next with the OH group is symetrical.

Having a weak 3-D imagination skill,It is one of the areas of chemistry in which I absolutely suck(the other being solid state)..Someone knows any videos that explains the whole chapter using interactive 3D animations?.Please Help me.It is really important for me

grey=carbon; white=hydrogen; blue=nitrogen After assigning priorities, I concluded that the carbon attached directly to the nitrogen is an S enantiomer and the carbon attached directly to that carbon (the one not in a ring) is an R enantiomer. I decided to treat the benzene rings as...

Draw Newman projections depicting the (R)-enantiomer of each of the following: a) 1-bromo-1-chloroethane b) 1-bromo-1-methoxypropane Now, I am SURE that I am mistaken, but isn't that an (S)-enantiomer for each? Assigning priorities: For a) Br > Cl > CH3 > H...right? So, wouldn't the...

I am currently learning about stereochemistry in my O-chem class. I just have a few questions that I were running through my head. I know there are a lot of questions here, but they're not HW-related at all; my prof. just taught the lecture and I have had these questions on my mind. 1. How...

I need help writing the reaction to the product. I know the wedge and dash are R and S. I am stuck on what to do...please help me Thank you

Any known reasons, research, or theories about why earthly amino-acids exist in the L-configuration and have not been found in D-configuration naturally??

Stereochemistry, PLZ HELP! ok far left is the original problem i manipulated it so that hydrogen and cyanide is facing me, but in order to determine R/S configuration. hydrogen must be going away from me, correct? so i flipped it so that it is not going away from me, and i determined it to...

I really don't understand any of this. I already know the answers to these, but I don't know why they are chiral or achiral. Any help is appreciated. http://i57.photobucket.com/albums/g231/Paylardo/Chriality.jpg The "HO" on the far left was cut off. It is just another hydroxyl group.

Homework Statement Does the molecule in the file attached have an enantiomer? Homework Equations The Attempt at a Solution I think I can draw an internal symmetry plane to divide the molecule into 2 equivalent parts, but then again, it doesn't seem quite right to me. Building...

We determined our melting point to be 199 C. Which would correspond to (2R,2S) and (2S,3R) 2,3-dibromo-3-phenylpropanoic acid (mp 202-204 C) but we are trying to determine whether this is a syn or an anti addition. Any suggestions? Thanks Nautica