(ppm = 3.6, S, H=2), (ppm = 6.7, D, Jbd=7.91, H=2), (ppm = 6.78, T, Jcd= 7.25,
H = 1), (ppm = 7.18, T, Jbc=7.91, Jcd = 7.25, H=2).
MP = 109.5-111ºC.
This is slightly lower than the CRC Handbook’s
value of 114.3ºC.
(ppm = 2.15, S, H=3) , (ppm = 7.1, T, Jbc= 7.25, H=1), (ppm = 7.2, T, Jcd
= 7.91, Jcb = 7.25, H=2), (ppm = 7.5, D, Jbc = 7.25, H=2), (ppm = 8.5, S,
MP = 159-162ºC.
This is the para isomer.
The literature (CRC) MP is
168ºC (p), 87.5 (m), and 99 (o).
(ppm = 2.1, S, H=3), (ppm = 7.34, D, Jcb = 8.57, H=2), (ppm = 7.43, D,
Jcb = 9.23, H=2), (ppm = 8.7, S, H=1)
Although A did not travel very far (Rf = .05), there was only a single spot,
so it was pure.
I neglected to weigh Product A, so I am unable to report a percent yield.
was assumed that the reaction was quite efficient given that not much
This was justified by the fact that there was not much
left over (the solution was not very orange).