Question

Write the name and structrue of the following optically active compounds with lowest moleuclar weight.
i. alkane ii. Alkene
iii. Alkyne iv. unsaturated hydrocabon
v. alkyl halide vi. Alcohol
vii. Acid viii. Amine.

Answer 1

i. Optically active alkane with lowest molecular weight,
i. `underset(3-"Methyl hexane")(H_(2)C_(2)-underset(CH_(3))underset(|)overset(H)overset(|)(C^(**))-C_(3)H_(7))` and `underset(2,3-"Dimethyl pentane")(H_(5)C_(2)-underset(CH_(3))underset(|)overset(H)overset(|)(C^(**))-underset(H)underset(|)overset(CH_(3))overset(|)(C )-CH_(3))`
ii. Optically active alkene with lowest molecular weight:
`underset(3-"Methyl pentene")(H_(5)C_(2)-underset(CH_(3))underset(|)overset(H)overset(|)(C^(**))-overset(2)CH = overset(1)(CH_(2)))`
iii. Optically active alkyne with lowest molecular weight :
`underset(3-"Methyl pentyne")(H_(5)C_(2)-underset(CH_(3))underset(|)overset(H)overset(|)(C^(**))-C-=CH)`
iv. Optically active unsaturated hydrocarbon with lowest molecular weight:
`underset(3-"Methyl-pent-1-en-4-yne")(H_(2)overset(1)(C)=H overset(2)(C )-underset(CH_(3))underset(|)overset(H)overset(|)(.^(3)C^(**))-overset(4)(C )-=overset(5)(CH))`
v. Optically active alkyl halide with lowest molecular weitht:
`underset(("2-Flurobutane"))(H_(3)C-underset(C_(2)H_(5))underset(|)overset(H)overset(|)(C^(**))-F)`
vi. Optically active alcohol with lowest molecular weight:
`underset(("Butan-2-ol"))(H_(3)C-underset(C_(2)H_(5))underset(|)overset(H)overset(|)(C^(**))-OH)`
vii. Optically active acid with lowest molecular weight:
`underset(("2-Methyl butanoic acid"))(H_(3)C-underset(C_(2)H_(5))underset(|)overset(H)overset(|)(C^(**))-COOH)`
viii. Optically active amine with lowest molecular weight:
`underset(("Butan-2-amine"))(H_(3)overset(1)(C)-underset(.^(4)C_(2)H_(5))underset(|)overset(H)overset(|)(.^(2)C^(**))-NH_(2))`