Question

11. IUPAC name of CH2=CH−CH2Cl is

a) Allyl chloride b) 3 -chloro 1-

propene

c) 1- chloro 2-

propene

d) Vinyl

Chloride​

Answer 1

Answer:

1. Catalytic Hydrogenation

R-C≡C-R + H2 & Lindlar catalyst ——> cis R-CH=CH-R

R-C≡C-R + 2 Na in NH3 (liq) ——> trans R-CH=CH-R + 2 NaNH2

2. Addition by Electrophilic Reagents

HC≡C-CH2-CH=CH2 + Br2 ——> HC≡C-CH2-CHBrCH2Br

Acetylene HC≡CH + Energy ——> [HC≡CH •(+) + e(–) ΔH = +264 kcal/mole

Ethylene H2C=CH2 + Energy ——> [H2C=CH2] •(+) + e(–) ΔH = +244 kcal/mole

Ethane H3C–CH3 + Energy ——> [H3C–CH3] •(+) + e(–) ΔH = +296 kcal/mole

Carbocation

Stability CH3(+) ≈ RCH=CH(+) < RCH2(+) ≈ RCH=CR(+) < R2CH(+) ≈ CH2=CH-CH2(+) < C6H5CH2(+) ≈ R3C(+)

Methyl 1°-Vinyl 1° 2°-Vinyl 2° 1°-Allyl 1°-Benzyl 3°

HC≡CH + HCl + HgCl2 (on carbon) ——> H2C=CHCl vinyl chloride

HC≡CCH2Cl + HCl + HgCl2 ——> H2C=CClCH2Cl 2,3-dichloropropene

HC≡CH + CH3CO2H + HgSO4 ——> H2C=CHOCOCH3 vinyl acetate

3. Hydration of Alkynes and Tautomerism

HC≡CH + H2O + HgSO4 & H2SO4 ——> [ H2C=CHOH ] ——> H3C-CH=O

RC≡CH + H2O + HgSO4 & H2SO4 ——> [ RC(OH)=CH2 ] ——> RC(=O)CH3

RC≡CR' + H2O + HgSO4 & H2SO4 ——> [ RHC=C(OH)R' + RC(OH)=CHR' ] ——> RCH2-C(=O)R' + RC(=O)-CH2R'

H2C=CH-O-CH3 –X–> CH3-CH2-CH=O

4. Hydroboration Reactions

Answer 2

Answer:

Hey there!

Your answer is option (b) 3-chloro-1-propene.

HOPE THIS HELPS!

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