4 - methyl pent - 3 -en - 2 - one is the IUPAC name of

3- methyl pent -1,3- diene is

Give all the possible products from the reaction of NBS with 4- methyl - pent -2- ene with the relative yields.

Give all the possible products from the reaction of NBS with 4- methyl - pent -2- ene with the relative yields.

i. Predict the more stable alkene of each pair. I. a. 2- Methyl - pent -2- ene b. 2,3- Dimethyl - but -2- ene DeltaH_(C)^(@) II. c. Hexane d. cis - Hex -3- ene III. e. trans - Hex -2- ene f. 2- Methyl - pent -2- ene IV.g. cis - Hex -3- ene b. trans - Hex -3- ene

Assertion : The IUPAC name of CH_(3)CH = CH - C equiv CH is pent - 3 - en- 1 - yne and not pent - 2 en - 4 - yne. Reason : While deciding the locants of double and triple Bonds, lowest sum rule is always followed .

i. Predict the more stable alkene of each pair. ii. For which pairs could you use DeltaH_(h)^(@)? iii. For which pairs could you use DeltaH_(C)^(@) to determine their relative stabilities ? I. a. 2- Methyl - pent -2- ene b. 2,3- Dimethyl - but -2- ene DeltaH_(C)^(@) II. c. Hexane d. cis - Hex -3- ene III. e. trans - Hex -2- ene f. 2- Methyl - pent -2- ene IV.g. cis - Hex -3- ene b. trans - Hex -3- ene