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- Name the following and include any E/Z stereochem in the name .Two conformations of cis-l, 3-dimethylcyclobutane are shown. What is the difference between them, and which do you think is likely to be more stable?Why does the melting point (70-71) above match neither the enantiomers’ nor the racemate’s? Does it mean that the substance is impure, or perhaps isn’t even ibuprofen at all? (Racemic mixture:75-77C, Enantiomer:52-53C)
- please provide the machanisms of 1a, 1e, 1fAfter an attempt to resolve a racemate into its enantiomers, the observed rotation is +22.4 degrees per g/L. If the known specific rotation is +24.2 degrees per g/L,, what is the % enantiomeric excess of the compound?I'm a bit confused on enantiomers, diastereomers, and then a 180 flip meaning being "the same". I know enantiomers are mirror images that can't be placed one on top of the other. I also know diastereomers are non-mirror images. Then when diastereomers are flipped 180 degrees they can be considered "the same". Why couldn't that be said for enantiomers too when flipped 180 degrees? Thank you!
- For the given below ee values, calculate the percentage of each enantiomer present. 60% eeIf the sample of the pure R enantiomer of a molecule has a specific rotation of -40 degrees and your mixture of that molecule has an 82% ee S, what is the observed specific rotation of your sample?In each case, assign the correct configuration of R or S, 1 is highest priority, 4 is lowest priority.
- the Leu side chain has 2 rotatable bonds that can each each adopt the g+, g- and t conformation. how many possible rotamers does the Leu side chain have?For the following molecules: a. How many stereogenic centers are present? b. How many stereoisomers are possible for these molecules?pls give me answer of this question with explanation immiditely and i will rate you sir.