Posted by Caleb on Thursday, July 24, 2008 at 8:54pm.
It is most likely cis,cis-1,4-dephenyl-1,3-butadiene. If you draw it you would see a U-shaped molecule with the two phenyl groups getting close together at the the ends of the "U". Formation of this isomer is probably prevented by crowding (steric hindrance) at the ends of the U-shaped structure.
Another argument I just overlooked is that one of the reactants, cinnamaldehyde, contains a trans structure around the c=c double bond that is preserved in the final compound, 1,4-Diphenyl-1,3-butadiene. Thus, we cannot have two cis structures in the C=C-C=C chain which is the backbone of the the final compound. This may be a better argument than the one in my previous answer.
Related Questions
Chemistry - If I react a phosphorus ylide with trans-cinnamaldehyde, what would ...
organic chemistry - why is the trans-trans isomer of dibenzalacetone the most ...
chemistry - Why are cis and trans isomers not possible for ClCH2CH2Cl? Because ...
Organic Chemistry - In order for a Diels-Alder reaction to take place the diene ...
Chemistry - Below is the question I am trying to answer. I think after much ...
Chemistry - Below is the question I am trying to answer. I think after much ...
Biochem - Enhancers and promoters are ______. In contrast, the heterodimer "...
CellBiology - Enhancers and promoters are ______. In contrast, the heterodimer &...
O chemistry - 1. Predict the relative rates for the reaction of butadiene and a...
Chemistry - In the reaction of a diene, can a s-trans conformation diene and a s...
For Further Reading
