THEORY: The Diels-Alder cycloaddition reaction was discovered by Otto Diels and Kurt Alder and is very useful in the synthesis of polycyclic compounds. The Diels-Alder reaction can be described as: [4+2] cycloaddition- a diene with 4 π electrons + 2π electrons from the dienophile; a pericyclic concerted reaction- meaning the reaction occurs in a single step (no intermediates) and involves a cyclic redistribution of bonding electrons. In order for a Diels-Alder reaction to take place
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Chapter 2 21. An amino acid having the constitution shown has been isolated from horse chestnuts. It is configurationally related to L-proline and has the R configuration at C-3. Write a stereochemically correct representation for this compound. The addition of carbene by the cuprous chloride catalyzed the decomposition of diazomethane to 3‚4-dehydro-l-proline‚ which led to a combination of cis-3‚4-methylene-l-proline and trans-3‚4-methylene-l-proline in a proportion of 1:3.5. In addition‚ the
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Literacy is the foundation where the solving of social problems can be constructed. It is crucial for a person to read‚ write‚ and comprehend information if they want to function in a community. The majority of those who are illiterate can be linked with poor paying jobs and bad working conditions. Yet‚ those who have the necessary skills for human development have a source of power on their hands. If one chooses to use their power‚ they have a chance to transform the lives of many. Would any individual
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Friedel-Crafts liquid phase alkylation reaction of aromatic compounds is an industrially important which is known since 1877 and also commonly practiced in organic chemistry for the synthesis of various pharmaceutical compounds [1]. Catalytic benzylation of aromatics with benzyl chloride is one of the commercially significant C-C bond synthetic reaction processes to produce benzylated aromatics such as diphenylmethane and substituted diphenylmethanes. These are key intermediates in the synthesis
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The IR spectrum in KBr was a great way to compare the library spectrum to the crude and recrystallized Phenacetin. The KBr is a compound that does not show up in the spectrum‚ only the crude and recrystallized Phenacetin show. In this experiment‚ the crude had an 87.17% match to the library. In the recrystallized Phenacetin‚ the IR spectrum was taken twice due to the amount of KBr used in the pellet. The first recrystallized spectrum had a 68% match to the library spectrum. That not being
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association of the parent’s low functional health literacy level and a child health outcome is reliant on the caregiver’s ability to identify the child’s condition and immediately manage the adolescent’s medical needs. This responsibility of an adult to implement the necessary tasks of administering the correct amounts of medication‚ promoting adequate nutrition‚ and providing sufficient safety is further exacerbated by the common barrier reflected in the parents low functional health literacy levels. Studies
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1. Functional Styles in Modern English The Notion of Functional Style. Functional style as “having social relevance‚ functionally determined‚ displaying inner coherence combination of ways of usage‚ choice and combination of means of speech communication in the domain of a certain national language‚ correlated with other ways of expression of the same type‚ which attain other aims and fulfill other functions in the social communicative experience of the people”\V.V.Vinogradov\. Functional
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used to embed functional skills as much as I do now. My previous observations showed that I needed to embed more functional skills in the lessons to allow the lessons to be more effective‚ and in order to fulfil the requirements. I took this into consideration and looked at the different ways in which functional skills can be embedded in the lessons. I came to learn that as a teacher it was my responsibility to plan work that gives learners the opportunity to develop and apply functional skills in the
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Functional Roles of Human Resources One of the most important departments in a company is the human resources department. This department is charged with finding‚ screening‚ recruiting‚ and training job applicants‚ as well as administering employee-benefit programs. As companies reorganize to gain competitive edge‚ human resources play a key role in helping companies deal with a fast-changing competitive environment and the greater demand for quality employees. The purpose of this paper is to describe
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Structural – Functional Approach Paradigm Introduction to Sociology‚ Section: LO2 March 18‚ 2010 Abstract A summary of how structural-functional approach takes a look at society. How sociologists use the structural-function approach to analyze social issues. The summary also consists of an example of how structural-functional approach is used to predict an event and future events. The Structural - Functional Paradigm
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