Question

1. Which of the following reaction is a correct procedure to prepare alkenes. Br Br кон CHECH OH Joh H2SO4 H2O THF, 50 °C H2SO4 H2O Br THF, 50 °C OH кон CH,CH OH 2. Which of the following molecules is E configuration? нонс сн, C=C HECH h HOHCH c=c CI OMe C NC CHE C- C H,CO,C CH Br C=C HOHC 'CHCHE H₃CH₂C CH₂OH

Answer 1

Q1.

Inoption a,

If we react bromocyclohexane with the given reagents it will not give the product as written in the question. cyclohexene will be produced in this reaction. So it is not the correct option.

In option b, 1-methylcyclohexanol will react to give the product i.e 1-methylcyclohexene as shown in the presence of sulphuric acid ,water and heat. Therefore, Option b is the correct answer.

In other options , we will not get the desird product.

Q2.

If the two groups which are of higher priority are on the opposite side of the double bond then it will be E configuration and if these groups will be on the same side then it will be Z configuration.

In option a, both the CH_{​​​​​3} groups are on the opposite side. Therefore, it is E configuration.

Option a is correct

whereas, in all other options all the groups are different.