The reason behind the representation of allene on the right more accurate than the one on the left in below figure should be explained. Concept introduction: Bonds formed due to head-to-head overlap are termed sigma bond while ones formed by sideways or lateral overlap are named pi-bonds. The planar system or‘ s p 2 hybridized present in molecules such as ethylene as illustrated follows: Each carbon in ethylene is trigonal planar due to s p 2 hybridization. The right ethylene molecule as it shows all bonds in same plane. The one on right that has wedge and dash bonds indicate the one bond lie above and below the plane respectively.

Question

Propose an efficient synthesis for the following transformation: EN The transformation above can be performed with some reagent or combination of the reagents listed below. Give the necessary reagents in the correct order, as a string of letters (without spaces or punctuation, such as "EBF"). If there is more than one correct solution, provide just one answer. A. t-BuOK B. Na2Cr2O7, H2SO4, H2O C. NBS, heat F. NaCN D. MeOH E. NaOH G. MeONa H. H2O I. 1) O3; 2) DMS

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Question

Chapter 3, Problem 13E

Interpretation Introduction

Interpretation: The reason behind the representation of allene on the right more accurate than the one on the left in below figure should be explained.

Concept introduction: Bonds formed due to head-to-head overlap are termed sigma bond while ones formed by sideways or lateral overlap are named pi-bonds.

The planar system or‘ sp2 hybridized present in molecules such as ethylene as illustrated follows:

Each carbon in ethylene is trigonal planar due to sp2 hybridization. The right ethylene molecule as it shows all bonds in same plane. The one on right that has wedge and dash bonds indicate the one bond lie above and below the plane respectively.

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Propose an efficient synthesis for the following transformation: EN The transformation above can be performed with some reagent or combination of the reagents listed below. Give the necessary reagents in the correct order, as a string of letters (without spaces or punctuation, such as "EBF"). If there is more than one correct solution, provide just one answer. A. t-BuOK B. Na2Cr2O7, H2SO4, H2O C. NBS, heat F. NaCN D. MeOH E. NaOH G. MeONa H. H2O I. 1) O3; 2) DMS

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