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CH(3)CH(2)CH(2)Broverset("KOH(alc)")rarr...

`CH_(3)CH_(2)CH_(2)Broverset("KOH(alc)")rarr[A]overset(Br_(2))rarr[B]underset(NaNH_(2))overset("KOH(alc)")rarr[C]`

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`underset("1-Bromopropane")(CH_(3)CH_(2)CH_(2)Br)overset("KOH(alc)")rarrunderset("Propene[A]")(CH_(3)CH=CH_(2))overset(Br_(2))rarrunderset("1,2-Dibromopropane[B]")(CH_(3)underset(Br)underset(|)(C)H-underset(Br)underset(|)(C)H_(2))underset(NaNH_(2))overset("KOH(alc)")rarrunderset("Propyne[C]")(CH_(3)-C-=CH)`
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