The correct sterochemical descriptor for the alkenes in permethrin and bifentrin has to be determined. Concept introduction: Alkenes are one of the important types of hydrocarbon which have at least one carbon-carbon double bond ( C = C ). According to the I nternational U nion for P ure and A pplied C hemistry the name of an alkane ends with ene. Alkenes have a general formula C n H 2 n where n is the number of carbon atom. E-Z designators are used as like cis-trans terminology for non-similar groups attached alkenes. In E-Z designations, the groups attached to vinylic positions are checked by their priority on the basis of higher molecular weight . If the higher priority groups are on the same sides , then the configuration is designated as Z . If the higher priority groups are on the opposite sides , then the configuration is designated as E. Permethrin and bifenthrin are the synthetic pyretherenoids now in common use in household and agricultural products. Their structure is given below,

Question

Want to see the full answer?

Answer 1

Question

Chapter 17.8, Problem AQ

Interpretation Introduction

Interpretation: The correct sterochemical descriptor for the alkenes in permethrin and bifentrin has to be determined.

Concept introduction:

Alkenes are one of the important types of hydrocarbon which have at least one carbon-carbon double bond (C=C ). According to the International Union for Pure and Applied Chemistry the name of an alkane ends with ene. Alkenes have a general formula CnH2n where n is the number of carbon atom.

E-Z designators are used as like cis-trans terminology for non-similar groups attached alkenes.

In E-Z designations, the groups attached to vinylic positions are checked by their priority on the basis of higher molecular weight. If the higher priority groups are on the same sides, then the configuration is designated as Z. If the higher priority groups are on the opposite sides, then the configuration is designated as E.

Permethrin and bifenthrin are the synthetic pyretherenoids now in common use in household and agricultural products.

Their structure is given below,

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Fill in the blanks by selecting the appropriate term from below: For a process that is non-spontaneous and that favors products at equilibrium, we know that a) ΔrG∘ΔrG∘ _________, b) ΔunivSΔunivS _________, c) ΔsysSΔsysS _________, and d) ΔrH∘ΔrH∘ _________.

Highest occupied molecular orbital Lowest unoccupied molecular orbital Label all nodes and regions of highest and lowest electron density for both orbitals.

Relative Intensity Part VI. consider the multi-step reaction below for compounds A, B, and C. These compounds were subjected to mass spectrometric analysis and the following spectra for A, B, and C was obtained. Draw the structure of B and C and match all three compounds to the correct spectra. Relative Intensity Relative Intensity 20 NaоH 0103 Br (B) H2504 → (c) (A) 100- MS-NU-0547 80 40 20 31 10 20 100- MS2016-05353CM 80 60 100 MS-NJ-09-3 80 60 40 20 45 J.L 80 S1 84 M+ absent राग 135 137 S2 62 164 166 11 S3 25 50 75 100 125 150 175 m/z