Question

Please fill the blank and answer all of them

1-An oxidation results in the _______________________ of the number of C—Z bonds (by the way, what does Z include?) and a ___________________ results in the increase of the number of ______________ bonds.

2-• List the three types of reducing agents. What species are all three delivering to the starting material?

3• The reduction of an alkene yields an ______________________. The reduction of an alkyne also yields an __________________ unless Lindlar’s catalyst is used. Then a (be specific about stereochem) __________________________ is the result. If Na/NH3 is used, a (be specific about stereochem) __________________________ is the result.

4• Before hydrogenation, a compound had the molecular formula of C7H10. After hydrogenation, the compound had a molecular formula of C7H14. How many rings and how many  bonds were in the original molecule?

Answer 1

(1) decrease, C-Z          where Z = H)

(2) Reducing agents, LiAlH4           H- (hydrode)

                                NaBH4         H- (hydride)

                               H2/Pd,          H

(3) Alkane, alkane

alkyne gives cis alkene in the present of lindlar's catlyst and trans alkene in the presence of Na/NH3

(4)

Molecular formual os saturated hydro carbon is CnH2n+2 where n = number of carbons.

forn n = 7, C7H16

We have C7H14,

Since 4 hydrogens are added, there must be two pi bonds and one ring(which balances the remainig)