Organic Chemistry Basics 2 Question 69

69. ………ring is most strained. (cyclopropane, cyclobutane, cyclopentane)

(1981, 1M)

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Solution:

  1. Cyclopropane: here the $\mathrm{C}-\mathrm{C}-\mathrm{C}$ bond angle is $60^{\circ}$ while the requirement is $109^{\circ}$.