[ScorchedEarth87]

Hi, studying for midterms, and very confused about part of this reaction, can someone please help me. Also if I'm doing anything incorrectly let me know. Thank you.

but-1-yne-----------> ---------------->------------->
              NaNH2      C2H5I           B2H6

Okay so what I have so far is since we have a terminal alkyne when can remove a hydrogen to get
HCCCH2CH2- and NH3+

Then when you react it with the haloalkane, C2H5I, you can do an alkylation reaction and get hex-1-yne, and NH3+I-

But I'm very confused about the reaction with diborane (B2H6), I really don't even know where to begin.

[AWK]

http://www.cem.msu.edu/~reusch/VirtualText/addyne1.htm#add4

[ScorchedEarth87]

thank you