discover the product of this reaction‚ isolate the adduct‚ and classify the diene from the melting point of its adduct. The unknown was one of four conjugated dienes. Maleic anhydride Observation and Data The three substances‚ anhydrous diethyl ether‚ maleic anhydride‚ and the eucalyptus oil combined a yellow mixture. The mixture produced a very strong scent. After heating the reaction under reflux for 45 min‚ crystals began to form when reaction was cooled to room
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Lab #4 The Synthesis of Organic Polymers CHM2123‚ Section C October 21‚ 2014 Introduction: Organic polymers are macromolecules that are composed of smaller molecules called monomers. There are two main groups of polymers: natural polymers and unnatural (synthetic) polymers. Natural polymers include proteins such as cellulose and starch and are a necessity for our existence. On the other hand‚ synthetic polymers such as the polycarbonate in our lab goggles
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Expt.1. Acetylation of α-D-glucopyranose Add slowly 2.5 g (0.014 mol) of powdered D-glucose in small portions (roughly in 7-10 portions and 5 min for each addition) into a preheated solution of ZnCl2 (0.5 g anhydrous ZnCl2 in 12.5 ml acetic anhydride‚ this will be provided by lab. technician) in a 50 ml pear shape flask (heat in water bath for 10-15 min before addition start). The flask is attached with an air condenser. Swirl the mixture gently during the addition to control the vigorous reaction
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The Diels-Alder Reaction Submitted by: Joe Student Partner: Jill Student Date: February 8‚ 2005 TA: Super TA Reaction +OOOxylene140 oCOOO Data Table Reagents MW Grams used Lit. Mp Anthracene 178.23 g/mol 1.023 g 216-218ºC Maleic anhydride 98.06 g/mol 0.497 g 54-56ºC Products MW Grams obtained Lit. Mp Observed Mp Crude product 276.29 g/mol 1.362 g 261-262ºC 260.2-261.3ºC Recryst. Product 276.29 g/mol 1.283 g 261-262ºC 261.3-261.9ºC Results and Discussion Discuss the
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of these dienes are conjugated and have the ability to make Diels-Alder adducts with maleic anhydride. The Diels-Alder reaction is the conjugate addition of an alkene to a diene. In order for a Diels-Alder reaction to occur the diene must exist as an s-cis conformation and must be conjugated. One reactant (the diene) contributes four carbons and the other reactant (the dienophile‚ in this case the maleic anhydride) contributes two carbons to the six-membered ring of the resulting cyclic compound (the
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Nor Amirah Farhana Nawawi Organic Chemistry Lab Report Bo Shen Title: Nucleophillic Substitution Reaction Introduction: This lab experimented on the reactions of the chemicals that undergoes SN1 or SN2 reaction. Nine different compounds were given to be examined with two reagents - NaI in acetone and AgNO3 in ethanol. The SN1 reaction happens in AgNO3 in ethanol reagents‚ and SN2 reaction is in NaI in acetone. Procedure: Following the lab manual. Results: compound NaI /acetone (SN2) AgNO3/ethanol
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Explain the differences between data‚ voice‚ and video signals in 200 to 300 words. Include a description comparing the differences between a private branch exchange (PBX) and Voice over Internet protocol (VoIP). Solution: Data signal is a mode of physical data transmission usually in binary code in signals or pulses from one source point to one or more destination point. Data is transformed into electromagnetic signals prior to transmission across a network. Data and video signal are typically
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selective‚ usually yielding only one of several possible stereoisomer. The addition of maleic anhydride to a diene yields entirely the endo product in which the bulkier parts of the dienophile are closer to the carbon-carbon double bond.Dienes and trienes occur in the essential oils of a number of plants and contribute to the flavors and aromas of certain plants. Most conjugated dienes can form Diels-Alder with maleic anhydride.Trienes such as β-Myrcene (C10H16) may also form such adducts if at least
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The Shoe Store Incident HRM/546 February 25‚ 2013 Audrey Myer The Shoe Store Incident Discrimination due to age is one of the great tragedies of modern life. The desire to work and be useful is what makes life worth living‚ and to be told your efforts are not needed because you are the wrong age is a crime (Llopis‚ 2011). there are times when manager have to make important decisions that directly affect the customers and employees whom they have interaction with on a daily basis. Under federal
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Jealousy is explored in the song Jealousy by 702 in numerous ways. The two obvious ways are‚ one the title and the repetition of jealousy in the chorus and in the verses. Jealousy is defined by the Macquarie Dictionary as - resentment against a successful rival or the possessor of any coveted advantage. In this song the jealousy stems from women who envy the singer of her success in finding a partner. The singer believes the women want to be her as is continually repeated in the chorus - ’THEY’RE
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