Organic Compounds Containing Halogens Question 12
Question: The missing reagents $ R_1 $ and $ R_2 $ in the following series of reactions are $ CH_3CH_2Br\xrightarrow{R_1}[]\xrightarrow{R_2}CH_3\overset{-}{\mathop{C}}H{P^{+}}Ph_3 $
Options:
A) PhLi and $ Ph_3P $ respectively
B) $ Ph_3P $ and PhLi respectively
C) $ Ph_3P $ and $ C_2H_5ONa $ respectively
D) Either [b] or [c]
Show Answer
Answer:
Correct Answer: D
Solution:
[d] $ CH_3CH_2Br+Ph_3P\xrightarrow{{}}CH_3CH_2{P^{+}}Ph_3B{r^{-}}\xrightarrow[C_2H_5ONa]{C_6H_5Lior} $
$ CH_3CH=PPh_3\overset{{}}{\longleftrightarrow}CH_3\overset{-}{\mathop{C}}H\overset{+}{\mathop{P}}Ph_3 $
BETA
