chm 2120 answers 3

chm 2120 answers 3 - Answers. Assignment #3 a) T.Durst OH...

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Answers. Assignment #3 T.Durst Br a) OH OCH 3 b) H 3 C CH 3 c) HO d) OH e) f) trans-4-(1methylethyl)-cyclohexanol or trans 4-isopropylcyclohexanol; g E,E- 2,4-hexadien-1-ol; h) Ee-1,3-hexadiene; 1,7-dimethyl-2,5-hexanediol; I) 5- methyl-1,3cyclohexadiene; C C H 3 C CH 3 C C H OH C C H k) l) m0 2 H H CH 3 CH 3 n H H H CO 2 CH 3 n 3. O O a) O O H b) c) C C H H H H H H CH 3 -O-Cl d) weak bond weak bond 4. O O O O 2 benzoyl radicals 2 CO 2 + 2 . O O O O . . Use 'fish hooks to indicate moving one electron . C O O - 5
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+ H-Br Br 100 0 C benzoyl peroxide 90 0 C Br This is an electrophilic addition of HBr to an alkene. The proton adds first to give preferentially the more stable carbocation CH 3 H (+) The benzoyl peroxide signifies a radical reaction. A bromine radical is generated by reaction of a phenyl radical with HBr. The bromine radical reacts with the alkene to give the more stable secondary radical which abstracts H from HBr to give the product and another Br radical MISSING HBr Br H . 6
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This note was uploaded on 01/10/2012 for the course CHM CHM 2120 taught by Professor Alysonflynn during the Spring '11 term at Carleton CA.

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chm 2120 answers 3 - Answers. Assignment #3 a) T.Durst OH...

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