CONCEPT CHECK No. 2 (Continued): Fill in the blank spaces withyour answers for Questions 1 & 2 for the designated (R) & (S)configurations. Follow instructions on the choices given below.Concept Check: Configurational Isomers?(1) Tell whether the two structures in each pair represent enantiomers or two molecules of the samecompound in different orientations. Designate each chirality center as (R) or (S).CBrHFCH,andOHand(a)and(b)(c)CH,H OH(2) Cornsider the following pairs of structures. Designate each chirality center as (R) or (S ) and identifythe relationship between them by describing them as representing enantiomers, diastereomers,constitutional isomers, or two molecules of the same compound.H,C H(e)BrHCH,Br(a) H,C BrandandCHH"H'FCH,H.CH,H,G HCCH,Br(b)(d)andandBrBr'FBrOrgan Cenity emetmWRITE:SS - if both structures have an S chirality centerSR - if the first structure given has an S chirality center & thesecond has RRR - if both structures have an R chirality centerRS - if the first structure given has an R chirality center & thesecond has SXS - if the first structure given is achiral & the second has an SconfigurationXR - if the first structure given is achiral & the second has RconfigurationSX - if the first structure has an S configuration and the secondis achiralRX - if the first structure has R configuration and the second isachiralXX - if both structures are achiralAnswers:1. (a)(b)(c)2. (a)(b)(c)(d)

a) and So they are enantiomers. [SR] b) and So they are identical. [RR] c) and So they are…

CONCEPT CHECK No. 2 (Continued): Fill in the blank spaces with your answers for Questions 1 & 2 for the designated (R) & (S) configurations. Follow instructions on the choices given below. Concept Check: Configurational Isomers? (1) Tell whether the two structures in each pair represent enantiomers or two molecules of the same compound in different orientations. Designate each chirality center as (R) or (S). CH, (b) H. (a) and (c) and CH, HOH (2) Consider the following pairs of structures. Designate each chirality center as (R) or (S) and identify the relationship between them by describing them as representing enantiomers, diastereomers, constitutional isomers, or two molecules of the same compound. CH, (a) HG Br (c) Be and and CH CH, H. H CH (b) , and CCH, Br (d) and HC Ora Cetry mem WRITE: SS - if both structures have an S chirality center SR - if the first structure given has an S chirality center & the second has R RR - if both structures have an R chirality center RS - if the first structure given has an R chirality center & the second has S XS - if the first structure given is achiral & the second has an S configuration XR - if the first structure given is achiral & the second has R configuration SX - if the first structure has an S configuration and the second is achiral RX - if the first structure has R configuration and the second is achiral XX - if both structures are achiral Answers: 1. (a) (b) (c) 2. (a) (b) (c) (d)

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter6: Alkanes & Alkenes

Section: Chapter Questions

Problem 25E