Question

The spectra provided were acquired in CDCl₃solvent, which shows a ¹H solvent peak from residual CHCl₃as a singlet at 7.27 ppm. Please fill in the table

20180501_inova_500_1-butanol-PROTON_01 'H NMR spectrum of 1-butanol 3.67 3.64 -3.65 Chemical Shirt (ppm) 1.59 _.1.58 1.56 1. 531 .55 -1.43 1.42 - 1.37 1.40 1.39 -1.32 1.58 1,56 142165 140 BCD 2.012.040.90 3.00 100.5 -0.06 --0.94

Answer 1

TUESDAY Signal - B Chemicals Splitting to fneighbouring rint fride the H. Shift pattern onhus 3,65 triplet 1 2 2 4 M 4h ( CZ OH 1.56 quintet 4 2 CH CH (th) 40H 1,40 Sextet 5 2 CH CH CH CH OH D 132 singlet a 1 h 44 H M for) E 1 '0.94 triplet 1 2 3 4 MM 04 102 02 I 03 04 Signal marked t' is directly attached to an oxygen 80 the electronegative oxygen cullpull electrons and honce it will be morce deshielded hence appearing in downfield (high delta) of 365ppm. It is showing a. triplet because the neighboring carbon contains at According to the multiplicity rule if the nerah bourin contains g'numbere of H. the splitting will be (n+ 0 Here to a neighbouring H hena (241) 3 (triplet) splitting same way the other elf & cz are showing & putting the effect of o canbee sen on the ß carbon and slightly on the g-carbon. And they are also doubly substhilde earing at higher delta then the terminal The -OH is showing a singlet at 1.32ppm. - T W T F S S M T W T F S S M T 1 2 3 4 5 6 7 W