Grignard reaction‚ a Grignard reagent (R–MgX) adds to the carbonyl group in an aldehyde or ketone to form an alcohol (Figure 1). The reaction of a Grignard reagent with formaldehyde can be to synthesize a primary alcohol‚ with any other aldehyde can be used to synthesize a secondary alcohol‚ while the reaction with ketone is useful in the synthesis of a tertiary alcohol. Figure 1. General reaction mechanism of a Grignard Reaction The preparation of the Grignard reagent involves the adding of an alkyl
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violet color when dyed. The experiment was first heated under reflux to produce the necessary Grignard reagent as a grey liquid. It was then reacted with diethyl carbonate and hydrochloric acid to produce crystal violet. The resulting chemical was very absorbent to polypropylene and bleached cotton fabrics. Introduction: In this experiment a Grignard reaction is performed with a Grignard reagent acting as the nucleophile1. Grignard reactions are very useful for the substitution of compounds containing
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Monasticism was one of the most important institutions of early medieval society. The reason for its appeal was it promised a transformative experience‚ religious commitment‚ and communal living. Following Christ did not require a solitary life or a monastic one however it was a response by its believers. The shaping effect it had on medieval notions of piety and devotion between the laity and the church was one of an ability to adapt and change according to situations within the secular community
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A positive outcome of the test results in a colour change; blue-black in the presence of starch and a red-brown in the presence of glycogen. A negative outcome results in no colour change and all solutions remain a very pale yellow (Pavia‚ 2005). Benedict ’s solution was used to identify the presence of reducing sugars; the aldehyde functional group is the part that reacts in the test. A positive indicator of the test is the formation of a coloured precipitate of the blue solution‚ ranging from yellow-green
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This paper is related to an online therapy. This paper consists of the elements and contents of the information that is found on any online therapy website along with the information of the professionals that are involved in that therapy. The paper also outlines the way in which most of the communication relating online therapy. The paper will also highlight the policies and regulations that provide fundamentals to run an online therapy. The paper also comprehends the state regulation authority to
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Ocean’s Eleven OLS 252‚ fall semester 2010 Demetrius Lopez After watching the movie Ocean’s Eleven‚ what are your thoughts about it? You probably thought it starred an awesome cast‚ had unexpected twists‚ and had an original storyline. But‚ did anyone think in terms of an organization? I did not think so. However‚ many different behaviors in an organizational structure can be seen in the movie. This movie assessment paper will help you see the correlation by discussing teamwork dynamics‚
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As the reaction was to set up to produce a Grignard reagent and then recrystallize it to obtain pure sample. The percentage yield obtained was 55% and its melting point was 161 co which is within the literature value 160-163 co. In addition to that the IR spectroscopy confirmed the molecule structure to be triphenylmethanol. Introduction: The Grignard reagents are alkyl magnesium halides‚ R-Mg-X were first introduced in 1900. These reagents are usually prepared by reacting one atom with one molecule
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Organic chemistry studies carbon compounds‚ but a few carbon compounds such as carbon monoxide‚ carbon dioxide‚ metal carbonates‚ and carbon disulphide traditionally come under the umbrella of inorganic chemistry. INTRODUCTORY 1. Give the following for the compound propane C3H8: (a) Full structural formula (b) Skeletal formula 2. Draw all the possible isomers of hexane C6H14 and give the name of each. 3. Draw the structural formulae for each of the following alkanes: (a) 2‚2- dimethylbutane
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Group 5 Experiment No. 5 Classifications of Alcohols: Lucas Test Q1. REACTION OF PRIMARY‚ SECONDARY AND TERTIARY ALCOHOLS WITH LUCAS REAGENT ALCOHOL IMMEDITE REACTION WITH LUCAS’ REAGENT OBSERVATIONS AFTER 5 MINUTES AT 27 °C TO 28 °C n-butyl alcohol No reaction occurred Secondary butyl alcohol cloudy Tertiary butyl alcohol Cloudy appears Q2. REACTION OF SECONDARY AND TERTIARY ALCOHOLS WITH CONCENTRATED HYDROCHLORIC ACID ALCOHOL OBSERVATIONS Secondary butyl alcohol
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primary (1°)‚ secondary (2°)‚ or tertiary (3°) alcohols depending on whether the -OH group is attached to a carbon with 1‚ 2 or 3 other carbon atoms attached to it. These different alcohols react differently with Lucas reagent and with Bordwell-Wellman reagent; hence these reagents can be used for identifying the class of alcohol. The relative acidity of phenols can be used to characterize this class of alcohols relative to the alkyl alcohols. This property will be exploited in the identification
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