Question

1. Chirality (6pts, 2EA) Arethe following carbons indicated by the arrow stereogenic-a chiral carbon center). Write yes or DATE: 1104.19 No and explain? Н Нс. Br H Hас" Et 2 CONFIGURATIONS (2PTS, IEA) Assign stereoisomer configuration using R or S nomenclature (NOTE: priorities have been preassigned using Cahn-Ingold-Prelog convention) 3. Multiple Choice-Definition (1pt): Define enantiomers: (Circle the correct choice) Molecules with same molecular formula, and connectivity, but differ in 3-dimenisonal space a. b. Molecules with same molecular formula, and connectivity, but differ in 3-dimenisonal space that are superimposable mirror images of cach other Molecules with same molecular formula, and connectivity, but differ in 3-dimenisonal space that are not mirror images of C. cach other d. Molecules with same molecular formula, and connectivity, but differ in 3-dimenisonal space that are non-superimposable mirror images of one another. 4. Stereochemistry (10pts, 5pt ea): Indicate the Cahn-Ingold-Prelog priorities of the groups attached to the stereogenic carbon in cach of the following molecules and label the stereocenter R or S as shown in the example. (You will not get credit unless you assign the correct priorities. (6pts) Example Me NH2 он HI F

Answer 1

indicated is Answer - Are chiral - the or not following carbon exploin. inwes bow it is This is with chirol carbon four different because of group. attach "Non two This is not chiral attaching group carbon because of are some. "Noll ALAH HCV & H₂c- c Et t Et Hos H c-ECH I FUFI {t= CH₂ - CH3 It is group not are chirol same. Carbon because coobon be two

Ross because fourth on above the plane. priority group are Define enatiomer. molecules with same molecular formula, and connectivity but differe in 3-Dimen- stional space That are superimposable image to each other. stereo chemistry. - WH2G * OH CIN label as * sign

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