Question

Which of the following statements is/are correct in the synthesis of cycloalkanes by intramolecular cyclisation ?

• A. Large rings with more than six C atoms are stable but difficult to prepare.
• B. Decreasing order of thermal stability of cyclic rings is 6 > 7, 5 > 8, 9 > 4 > 3.
• C. Decreasing order of probability of ring closure is 3 > 4 > 5 > 6 > 7 > 8 > 9
• D. Ease of synthesis of cyclo compounds is 5 > 3. 6 > 4. 7. 8. 9

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A Large rings with more than six C atoms are stable but difficult to prepare.
B Decreasing order of thermal stability of cyclic rings is 6 > 7, 5 > 8, 9 > 4 > 3.
C Decreasing order of probability of ring closure is 3 > 4 > 5 > 6 > 7 > 8 > 9
D Ease of synthesis of cyclo compounds is 5 > 3. 6 > 4. 7. 8. 9

Large rings with more than six Carbon atoms are stable but difficult to prepare. Decreasing order of thermal stability of cyclic rings is $6>7,5>8,9>4>3$. Decreasing order of probability of ring closure is $3>4>5>6>7>8>9$. and Ease of synthesis of cyclo compounds is $5>3.6>4.$