Strange Orgo Question
Started by drgreen
I'm pretty sure an allene cannot be chiral. You need an sp3 carbon in order to have a stereocenter
I believe, as the previous post said, that in order for a molecule to be chiral it needs to have 3 different substituents so an alkene can not be chiral. However, alkenes can be assigned as cis or trans based on the relative location of the highest priority substituents.
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check L.G Wade text book page 190 allene which has 2 distinct groip at ends is chiral. I guess we can not use R or S in this case.
i don't quite understand it even after reading what wiki has to say but you might be able to figure out from this. http://en.wikipedia.org/wiki/Allene
it clearly says allen can be chiral when different substituents exist but what the hell.. i don't really get it
it clearly says allen can be chiral when different substituents exist but what the hell.. i don't really get it
Allene can be chiral or achiral depending on the different substituents on the terminal carbon, but in this case, I dont think one can assign a R or S on this particular compound (only on sp3 carbons).
R/S are arrangement of atoms at the chirality center and this is usually done through "the steering wheel" projection, the Fischer Projection, and the Newman Projection; all of em being in tetrahedral conformation.
hopefully someone can verify this info. 😎
R/S are arrangement of atoms at the chirality center and this is usually done through "the steering wheel" projection, the Fischer Projection, and the Newman Projection; all of em being in tetrahedral conformation.
hopefully someone can verify this info. 😎
R AND S CAN BE ASSIGNED FOR ALLENES. the stereogenic center is the set of double bonds, the 3 carbons.
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1325211
Oo. I just found this link that's really helpful in explaining it: http://www.cem.msu.edu/~reusch/VirtualText/special1.htm
