Visit www.downloadmela.com for more papers i had attended an off-campus interview of godrej. It starts on time so be on time. it started with Box test. the question are as follows. 1) Box1 box2 box3 13 11 7 using ony addition and subtraction bring 19 in box1 and 30 in box3. 2) box1 contains Son’s current age is 13 and box2 contains fathers current age is 58 box3 contain sum of father and son six yrs back. bring father’s age 13yrs before son was born in box 1 and sum of father and son
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The Grignard Synthesis of 3-methyl-3-heptanol In this experiment‚ an example of an organometallic compound which has a carbon magnesium bond will be utilized to form a tertiary alcohol. Grignard reagents have been extremely useful in the synthesis of a large number of classes of organic functional groups. Although Grignard reagents are unstable and decompose in air and moisture‚ they can be prepared and used immediately with moderate difficulty in the undergraduate organic chemistry laboratory
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Discussion The reaction through which 4-mrthaoxyacetophenone is converted to 4-methoxybenzoic acid is a haloform reaction. This reaction involves two distinct stages that occur in the same environment. The first stage occurs through the based-catalyzed halogenation of the ketone that forms a trihalo ketone. First‚ the bleach is transformed into chlorine and hydroxide ions through the following reaction: Then‚ the hydroxyl is able to attack the rather acidic (pKa ~ 20) α-hydrogen of the ketone
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Mechanism of Bromine Addition to Alkenes Understanding the chemical mechanism (order of bonds broken and made as well as intermediates formed) has a great value in chemical synthesis. The chemical mechanism of a reaction will influence the rate of the reaction‚ the stereochemistry of the product(s)‚ and the extent of possible undesired side reactions. Organic reaction mechanisms investigate the path towards a desired product and not just the destination of that product. In this reaction‚ we will examine
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Experiment 3: Wittig Reaction Introduction This experiment performs a modified Wittig reaction using a phosphorus-containing Hornes-Emmons-Wittig reagent to generate an enolate anion of trimethyl phosphonoacetate instead of a phosphorus ylide. The methyl trans-4-methoxy cinnamate produced is then analyzed using melting point and 1H NMR spectroscopy. Theory The Wittig reaction prepares alkenes from carbonyl compounds by attacking a phosphorus ylide with a nucleophilic carbon atom stabilized by
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SUMMARY OF ORGANIC REACTIONS SECTION 1 - ALIPHATIC Aldehydes and ketones |Type of reaction |Mechanism | |1. oxidation (aldehydes only): aldehyde ( carboxylic acid |n/a | | | | |reagents: potassium
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2013 “Reaction Classes and Pericyclic Reactions” ● 4 Lectures ● Recommended Texts: (i) J. March “Advanced Organic Chemistry”‚ p 839‚ `---Edn.‚ Oxford (W); Warren (2) Ch 34‚ 35. Syllabus 1) General principles (a) Reaction classes (i) Heterolytic (ii) Homolytic (iii) Pericyclic (b) Pericyclic Reaction Types 2) Electrocyclic Reactions (a) Definition and examples (b) Stereochemical aspects and the Woodward and Hoffmann rules 3) Cycloaddition Reactions (a) Definition
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Simple Addition Lesson Plan 1 This lesson plan could be used at the elementary level‚ grade 2‚ as part of a math unit focusing on simple addition. I. Anticipatory set The teacher will say‚ “Students have you ever wondered what a digit is?” II. Learning Objectives: Goal: Students will be able to provide answers to mathematic problems commensurate with grade level. Short Term Objective: Given 4 scenarios involving simple addition‚ students will complete the accompanying problems with 95%
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Reminder: These notes are meant to supplement‚ not replace the laboratory manual. SN1 Reaction Notes Background and Application Substitution Nucleophilic First Order (SN1) reactions are one of the most common type of organic reactions. SN1 reactions can be used to make a wide variety of new compounds. In this experiment‚ t-amyl alcohol will be converted by a SN1 mechanism to 2-chloro-2-methylbutane. Safety Precautions Concentrated Hydrochloric Acid is 12M. It will cause visible destruction
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Subtraction and Addition of Algebraic Expressions Math 11 Objectives The student should be able to: Determine the degree of a polynomial Identify the fundamental operations of polynomials Definition of Terms Algebraic expression is an expression involving constants and or variable‚ with all or some of the algebraic operations of addition‚ subtraction‚ division and multiplication Definition of Terms Components of an Algebraic Expression Constant term: fancy name for a number
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