A grating is given with the wavelength 400nm, angle of incidence 45° and the angle of reflection 7°. Number of lines per millimeter for grating for first order diffraction is to be determined. Concept introduction: Calculation of spacing between reflecting surface is done by the following formula m λ = d ( sin i + sin r ) And the number of lines is calculated by- no . of lines = 1 d

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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 ☑

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Chapter 7, Problem 7.12QAP

Interpretation Introduction

Interpretation:

A grating is given with the wavelength 400nm, angle of incidence 45° and the angle of reflection 7°. Number of lines per millimeter for grating for first order diffraction is to be determined.

Concept introduction:

Calculation of spacing between reflecting surface is done by the following formula

mλ=d(sini+sinr)

And the number of lines is calculated by-

no. of lines=1d

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