(a) Interpretation: The order of the compounds containing the reversed-phase packing is to be stated. Concept introduction: The bonded phase has non polar nature in the reversed-phase packing. The non polar solute attracted towards the reverse phase packing and spent more time on the non polar bonded packing. Due to this the non-polar solute elute at the last. The polar solute will not attracted towards the bonded packing and also elute first from the column.

Question

Protecting Groups and Carbonyls 6) The synthesis generates allethrolone that exhibits high insect toxicity but low mammalian toxicity. They are used in pet shampoo, human lice shampoo, and industrial sprays for insects and mosquitos. Propose detailed mechanistic steps to generate the allethrolone label the different types of reagents (Grignard, acid/base protonation, acid/base deprotonation, reduction, oxidation, witting, aldol condensation, Robinson annulation, etc.) III + VI HS HS H+ CH,CH,Li III I II IV CI + P(Ph)3 V ༼ Hint: no strong base added VI S VII IX HO VIII -MgBr HgCl2,HgO HO. isomerization aqeuous solution H,SO, ༽༽༤༽༽ X MeOH Hint: enhances selectivity for reaction at the S X ☑

Answer 1

Question

Chapter 28, Problem 28.10QAP

Interpretation Introduction

(a)

Interpretation:

The order of the compounds containing the reversed-phase packing is to be stated.

Concept introduction:

The bonded phase has non polar nature in the reversed-phase packing. The non polar solute attracted towards the reverse phase packing and spent more time on the non polar bonded packing. Due to this the non-polar solute elute at the last. The polar solute will not attracted towards the bonded packing and also elute first from the column.

Interpretation Introduction

(b)

Interpretation:

The order of the compounds containing the reversed-phase packing is to be stated.

Concept introduction:

The bonded phase has non polar nature in the reversed-phase packing. The non polar solute attracted towards the reverse phase packing and spent more time on the non polar bonded packing. Due to this the non-polar solute elute at the last. The polar solute will not attracted towards the bonded packing and also elute first from the column.

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