Q3 Lab#7 Glucosamine HALF.docx

37 g millimoles 558 mmol 460 mmol 10653 mmol 460 mmol

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1.37 g Millimoles 5.58 mmol 4.60 mmol 106.53 mmol 4.60 mmol Equivalents 1.2 1 - 1.00 Density/mass % 1.563 g/ml 1.119 g/ml 2.13 g/ml 1.4 g/ml MP/BP Mp: 150 ° C Mp: 0 ° C Mp; 318  ° C Mp: 166 ° C
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Results Product: 2-imino-2-deoxy-D-glucopyranose Final Yield (mass, %) 0.8334g, 60.83% Description (state, color) White particles Melting Point Range  156-162 ° C NMR sample (solvent) CDCl 3 FT IR (diamond anvil, neat) 3482.22 cm -1  (N-H stretch, Amine), 3318.77 cm -1  (O-H stretch), 2971.66 cm -1 2931.52 cm -1 , 2895.12 cm -1 , 2842.97 cm -1  (sp3 C-H stretch), 1637.63 cm -1 , 1603.45  cm -1 (C=C stretch) 1 H NMR 1H NMR (400 MHz, CDCl3)  8.16 (d,  J  = 8.6 Hz, 2H,  a ))   Discussion   [1,1’-biphenyl]-4-carboxylic   acid   was   successfully   synthesized   from   Phenylboronic   acid   and   4- bromobenzoic acid by palladium-catalyzed Suzuki coupling. Several spectroscopic techniques such as infrared spectroscopy, 1 H NMR, and melting point were utilized to characterize the product. The infrared spectrum exhibited broad stretches at 2810.53 cm -1 and 2547.16 cm -1 , indicative of the carboxylic acid O-H. Additionally, there was a carboxylic acid C=O stretch at 1674.29 cm -1 and C=C stretch 1606.93 cm -1 . Collectively, these functional groups support the presence of the biphenyl carboxylic acid, confirming the reaction did occur. The presence of the
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