Solutions_Manual_for_Organic_Chemistry_6th_Ed 285

Solutions_Manual_for_Organic_Chemistry_6th_Ed 285 - 13-14(a...

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Unformatted text preview: 13-14 (a) d H d d ( b) J ab c an be determined most accurately from Ha at 8 9.7: Jab "" 8 Hz, a bout the same as "normal " alkyl coupling. J be c an * H d H c o � Ii \ C � C , H I C- H II a a = c d b = = = 8 9.7 (doublet, I H) 8 6.7 (doublet of doublets, I H) 8 7.5 (doublet, I H) 8 7.4 (multiple peaks, 5 H) b The doublet for He at 8 7.4 OVERLA P the 5 H peaks of Hd. S H H be measured from Hb a t 8 6.7, as the distance between either the first and third peaks or the second and fourth peaks (see diagram below): J bc "" 1 8 Hz , a bout double the "normal" alkyl coupling. (c ) 1 3- 1 5 H H3C b J r ;.:� �'� '1 0 C - CH3 H ... .. . . . . . . . . . . . 1 . . . . .. . . . . . . . . J bc 1 8 Hz 1 1 = 0 6.7 II d a I \ c=c I , = � (a) a b c d = = "" = 0 1 .7 0 6 .8 0 5 -6 0 2. 1 � f "��:� �'� '1 (b) a b c d = = = = doublet mu l t ip l e t ( two overlapping q uartets-see part ( c» d oublet s inglet L ( c) using J bc 1 5 Hz and J ab = 7 Hz: c (j:�'= 7 Hz � . · · · . . .;: J .1 :· ;: · · . 1 r . . 'I;� ·.;: :::·1- · · · · · · · · · · · '1';:'-;' . ... 1-· · · · · · . o 6 .8 �LJ� 278 -;. = .·· �. �.. '�� : : ( • •• �• • • • • , •••• • •, L ...
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This note was uploaded on 02/27/2010 for the course CHEM 140 taught by Professor Wade during the Spring '10 term at Whitman.

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