Question

are my proton labelled correctly for camphor?

from right to left: Hi singlet, Hj singlet, Hh singlet, Hb multiplet, Hf doublet of doublet**, Hb doublet of doublet, He multiplet, Hc pentet, Ha doublet of doublet.

what is the longer middle peak between Hf and Hb? is that a peak for borneol?

im trying to look for a peak on this spectrum for borneol in order to use it to calculate for impurity but im having trouble find one since Ha at 4.0 ppm looks insignificant. is there any other peak that i could use?

Pulse Sequence: s2p user Date2r ilei starting Tine rǐ33:40 Conpletion Tine: 17:46118 Har. 8, 2019 19030013 590z Totai acq- tine 1 ninute UNITYplus-509l An bient tenperature PULSE SEQUENCt Relax. delay 1.500 sec iah00.092 C OBSERVE"I, 300.1683398 MKZ DATA PROCESSING , ine broadening 0.1 itz FT Size 65536 He H a Ha 0.5 ppm 1.5 1.0 2.0 3.0 2.5 3.5 4.S 4.0 3.6 s. 1.057.09 12.80 S.0 87 282 0.25

Answer 1

dd → The Coxrect fxoton lahelled for (amphor i CM3 I 대 3」 Hc H e Hd H- dd (doublet oF doullsp He , multiplet Ha-一一multiple f mylh let HA mulHplet HgnuliPleH Smole Hi- Singli 다13 PPm atoms ,96-4 CH-D 9-214For Hb and H