Question

1 Determine the R/S orientation of the indicated chiral center(s) in the following molecules. If there is only one chiral center in the molecule, choose (none). H3C CH3 a Visited b H H3C Molecule #1 (B-thujene ): Center a: Center b: CH3 CH2 HO CH3 Molecule #2 ( rhodinol): Center a: Center b: CH3 OH CH, H3C CH3 H H H H CHE H H HO H CH3 H HO H 2-butanol OH CH3 CH a H b с The wedge-dash representation of 2-butanol is shown. 2 What is the orientation of the chiral center(s)? Write the orientation as in the following examples, (2S) or (2R,3S), not 25 or 2R,35. Be sure to include the parentheses and the number, and comma as necessary. Which of the Newman structures is equivalent to the wedge-dash structure? Note that the equivalent Newman structure will not necessarily have the sam rmation as the wedge-dash structure. Submit Answer Try Another Version 8 item attempts remaining b с Determine whether 2-chloro-2-methylbutane contains a chiral center. 3 How many different substituents do you count at atom #(2)? yes (To help yourself, draw 2-chloro-2-methylbutane on a piece of paper. no

Answer 1

. Yes it contains chiral center which I have marked in the above structure

1 2 CH₃ in Ha 3 CH₂ anti But in In stercocenter ä' the relation is aztéck. So the orientationis's Chiral center 'b' relation also anti cloek wise, but the 9th priority group is above the plane so crientation is t center center b CH₂3 cHq Anton HO Call - N so center a rotation is Anti clock wife eo CH₃ H 3 CH3 اران I TRUIR # nike #111 H OH GH CH₂ one CH3 There is chiral center and only the rotation wise that's the orientatia is 95 anti clock H is H ） chy GH H CH₃ Ji → is the (c) Newmann structure cel equivalent to wedge-dash structure al Hey - CH₂ CH₂ CS Scanned with CamScanner

And there is 2 substituent at atom 2 that is chloride and methyl substituent