Question

Us For the following reaction, determine the structure of the product by using the 'H NMR Hints: The O=P(OCH,CFala group is a leaving group J values are J values (splitting constants) are calculated using the following formula: J = (difference in ppm between split peaks) x (frequency of instrument) for ALKENE For this instrument:) = (difference in ppm) x (500MHz) If]<12Hz, the product has cls geometry around the double bond Protons If >12Hz, the product has trans geometry around the double bond CF,CH, od i CF,CH. O OM KHMDS, 18-Crown-6 THF, -78 "C * SMS a 4 UA00140

Answer 1

Answer s J=10424 Izuz ( For home (Filho Kimos, 18-rowne THE, -786 coet alkenes prortons comes aroun 6 ppm, around 6ppm we have the peaks, J = = = difference in ppm x 500 (6-23-6-2120 500 0.02x500 = 1042 which is 2 1243 hence product has is Geometry around the double bond Jualues in Question the is are tar alleene