Transcription of STUDY GUIDE LINK 7 - Sapling Learning
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STUDY GUIDE LINK 7 - Sapling Learning
stereochemistry OF CHEMICAL REACTIONS305 The trans diastereomer can exist as a pair of enantiomers, and the two enantiomers of the cis di-astereomer are rapidly equilibrated by the chair interconversion and cannot be separated ( ). Hence, three potentially separable stereoisomers could be formed: the cis isomer and thetwo enantiomers of the trans isomer. Because the cis and trans isomers are diastereomers, they areformed in different amounts. (You can t predict at this point which one predominates, but we ll re-turn to that issue in Sec. ) The two enantiomers of the trans diastereomer must be formed inidentical amounts.
306 CHAPTER 7 • CYCLIC COMPOUNDS. STEREOCHEMISTRY OF REACTIONS In a syn-addition, two groups add to a double bond from the same face: Syn-addition: In an anti-addition, two groups add to a double bond from opposite faces: Anti-addition: It is also conceivable that an addition might occur as a mixture of syn and anti modes.
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