Chapter 19, Problem 19.43P

Interpretation Introduction

(a)

Interpretation:

Synthesis of the given compound beginning with pentan-2-one is to be suggested.

Concept introduction:

The carbon–carbon bond-forming reaction results in heteroatoms having a specific relative positioning along the carbon backbone. If the heteroatoms in a target have 1, 2-, 1, 3-, 1, 4-, or 1, 5- relative positioning, and the synthesis calls for a carbon–carbon bond-forming reaction, then consider using a corresponding reaction from Table 19-1. In a retrosynthetic analysis, therefore, apply a transform that takes our target molecule back to reactants. Disconnect the appropriate C-C bond to take back to the reactants, and from retrosynthetic analysis, we can draw the synthesis of the target molecule.

Interpretation Introduction

(b)

Interpretation:

Synthesis of the given compound beginning with pentan-2-one is to be suggested.

Concept introduction:

The carbon–carbon bond-forming reaction results in heteroatoms having a specific relative positioning along the carbon backbone. If the heteroatoms in a target have 1, 2-, 1, 3-, 1, 4-, or 1, 5- relative positioning and the synthesis calls for a carbon–carbon bond-forming reaction, then consider using a corresponding reaction from Table 19-1. In a retrosynthetic analysis, therefore, apply a transform that takes our target molecule back to reactants. Disconnect the appropriate C-C bond to take back to reactants, and from the retrosynthetic analysis, we can draw the synthesis of the target molecule.

Interpretation Introduction

(c)

Interpretation:

Synthesis of the given compound beginning with pentan-2-one is to be suggested.

Concept introduction:

The carbon–carbon bond-forming reaction results in heteroatoms having a specific relative positioning along the carbon backbone. If the heteroatoms in a target have 1, 2-, 1, 3-, 1, 4-, or 1, 5- relative positioning and the synthesis calls for a carbon–carbon bond-forming reaction, then consider using a corresponding reaction from Table 19-1. In a retrosynthetic analysis, therefore, apply a transform that takes our target molecule back to reactants. Disconnect the appropriate C-C bond to take back to reactants. And from the retrosynthetic analysis we can draw the synthesis of the target molecule.