Which of the following Newman projections represents the most stable conformatio

Question

Which of the following Newman projections represents the most stable conformation of 1 2-dibromoethane? What is the product of the following reaction? (A) pentane (B) E-2-pentene (C) Z-2-pentene (D) 1-pentene Which of the following compounds will react fastest in an Sn2 reaction with NaCN? (A) 1-iodopropane (B) 2-bromopentane (C) 1-chloropropane (D) t-butyl bromide What is the expected product of the following reaction? What is the correct sequence of reactions to synthesize the following alcohol from 1-ethylcylopentene? (A) reaction with Br_2, followed by reaction with D_2O (B) reaction with water/sulfuric acid (catalyst), followed by reaction with D_3O^+. (C) reaction with BD_3, followed by reaction with H_2O_2 and NaOH. (D) reaction with D_2O in presence of an acid catalyst

Explanation / Answer

Ans . 4. D)
The most stable newman conformation is the staggered form , in which the two bromine atoms are present opposite to each other to avoid repulsion.

The structure shown in option D is the lowest energy form of the 1,2-dibromo butane and hence most stable.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.