http://img.sparknotes.com/figures/E/e6c8f444fe8c08822713915c5453ea2c/fig3_22.gif
C on the right is chiral C on the left is chiral

they have double bond, how can it be a chiral?

http://img.sparknotes.com/figures/E/e6c8f444fe8c08822713915c5453ea2c/fig3_22.gif
C on the right is chiral C on the left is chiral

they have double bond, how can it be a chiral?

Thats very strange. As far as I know, none of those carbons are chiral. :confused:

from what i see there are no chiral centers. but what version of the destroyer do you have because i can't find it in mine. whats the question number?

may be he is referring to pro-chirality? I always hate that thing! Which # is this?

may be he is referring to pro-chirality? I always hate that thing! Which # is this?

wtf is pro-chirality?!?! ahhhhhhhhhhhhhhhh

wtf is pro-chirality?!?! ahhhhhhhhhhhhhhhh
a prochiral molecule is a molecule that can be converted from achiral to chiral in a single chemical step. I am not very good at this! I remember we learned a little bit about this in orgo I, but my professor didn't really teach us much about it so I don't really know how to do this problem. If you have McMurry you can find more info on pg 302-303

I am using Dr. Romano's organic chm odyssey and his explanation in there is that these kinds of structures are called allenes and they are chiral if you have 2 diff groups bonded to both the carbons at the end. So, if you had two Hs instead of CH3 and H, then it wouldn't be chiral.

it is chiral because (i'm going to assume) the -C=C=C- cannot rotate and acts as one stiff molecule... the constituents then all would assume a tetrahedral-like symmetry. not sure though

I assume that the two compound are mirror image-enantiomer, when you rotate the compound on the left you can see that the CH3 group will face into the page whereas the H faces toward the page. Which are opposite to the compound on the right. That's what i think, i hope it helps.