[Option ID = 3148]
38) A compound shows [M]+ at m/z 84 and has a base peak at 56. It exhibits only one signal in 1H NMR at \(\delta\) 1.4 ppm and
one signal in $^{13}C$ NMR at \(\delta\) 35 ppm. The compound is
?? ????? m/z 84 ?? [M]* ??????? ?? ?? ???? ???? ???? 56 ?? ??
??? ?? ?????? \(\delta\) 35 ppm ?? ??????? ?? ????? ??
[Question ID = 788] [Question Description = CHEM_SET_1_Q098]
1. cyclobutane-1,3-dione
???????????????-1, 3-?????
[Option ID = 3149]
2. dichloromethane
???????????????
[Option ID = 3150]
3. cyclohexane
???????????????
[Option ID 3151]
4. 1,2,3-trimethylcyclopropane
1, 2, 3-???????????????????????
[Option ID = 3152]
1H NMR ??? ?? ???? ?? ??????? \(\delta\) 1.4 ppm ?? ??????? ?? ??? $^{13}C$ NMR
39) The major products A and B in the following reaction sequence are