Thiamine-Catalyzed Benzoin Condensation I.Conclusion Benzoin was produced by reacting 2 mols of benzaldehyde with the catalyst thiamine to form a new C-C bond. A total of 2.626 grams were recovered. There was a 33% recovery of benzoin. The low percent recovery could be due to the purity of the limiting reactant‚ benzaldehyde. Upon filtration‚ the mother liquid appeared oily making it more likely that the low recovery was due to the solution ‘oiling out.’ This could be avoided in the future
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Developing a successful business model without strong control mechanisms will only generate temporary profits. The purpose of control mechanisms in business models is to protect the created values and profit streams from being reduced by competitors‚ partners or strong customers. The last decades have shown a rapid growth in customer power at the same time as new technology and services are being replaced faster. Even though control always has been an important part of the business model
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Spectra Analysis Organic Chemistry Lab‚ CHEM 369 The University of Tennessee‚ Knoxville Dr. Smith Spectra 1: tert-butyl cyanoacetate Molecular formula: 141/13 = 10 R 11 => C10H10+11 => C10H21 C10H21NO2 – C3H10 = C7H11NO2 DBE: 2(#C - #H/2 - #X/2 + #N + 2)/2 =2(7 – 11/2 – 0/2 + 1 + 2)/2 = 3=> 1 double bond and 1 triple bond Mass spectrum table: m/z fragment |40
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Mechanism of chalcone formation Kinetic studies have been reported for the base-catalyzed formation of chalcone and its derivatives. [7‚ 8‚ 9] Two alternative mechanisms have been advanced for the reaction of benzaldehyde with acetophenone in the presence of a basic catalyst. 5 The formation of chalcone by the acid catalyzed condensation of acetophenone and benzaldehyde has been studied [10]. The following mechanism seems to be operating- 6 Importance of chalcones [1]They have close relationship
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Control mechanisms are important to every organization. Without them‚ it would be difficult to determine whether or not the planning‚ organizing and leading functions of management are effective and productive for the company. Although some mechanisms are used widely throughout many organizations and companies‚ some mechanisms are tailored to fit a specific organization. Management must determine the most appropriate control mechanisms for their company. In this paper‚ we provide a brief description
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DEFENSE MECHANISMS IN PSYCHIATRIC DISORDERS I. PSYCHOSES: *In the acute stage there is a complete loss of the ego’s defense mechanisms‚ and disturbing thoughts‚ feelings‚ and impulses intrude into the consciousness *as the individual gradually improves defenses appear • projection • delusional denial • distortion • regression II. NEUROTIC CONDITIONS: (Anxiety Disorders; Somatoform Disorders; Dissociative Disorders in DSM IV R) *defenses are used non-adaptively in
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Defense Mechanism Defense Mechanism is an unconscious psychological strategies brought into play by various entities to cope with reality and to maintain self-image. Healthy persons normally use different defenses throughout life. An ego defense mechanism becomes pathological only when its persistent use leads to maladaptive behavior such that the physical and/or mental health of the individual is adversely affected. The purpose of ego defense mechanisms is to protect the mind/self/ego from anxiety
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Name: Monish Kumar (S11065194) The University of the South Pacific MM313 Dynamic Systems Experiment 2- Crank Mechanism Aim: To investigate the relationship between piston displacement and crank angle for different ratios between the connecting rod and the crank. Also to look at the relationship between the turning moment on the crank shaft and crank angle for a given force on the piston. Equipment and Instrument: Introduction: A crank is an arm attached at right angles to a rotating
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airstream mechanism is the method by which airflow is created in the vocal tract. Along with phonation‚ it is one of two mandatory aspects of sound production; without these‚ there can be no speech sound. The organ generating the airstream is called the initiator; for this reason the production of airflow is called initiation. There are three initiators used in spoken human languages: the diaphragm together with the ribs and lungs (pulmonic mechanisms)‚ the glottis (glottalic mechanisms)‚ and the
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Description of a Mechanism Group III Group Leader: Maureen Bianca Cobilla Members: Erica Bulloso Catherine Gayle Cancio Tina Rose Capuli B.S in Psychology II-A Table of Contents 1 Description of Mechanism . . . . . . . . . . . . 1 Introduction . . . . . . . . . . . . 1 Initial Presentation . . . . . . . . . . . . 1 Organization of the Description . . . . . . . . . . . . 2 Part by Part Description . . . . . . . . . . . . 3 The Conclusion
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