Organic Lab #12

Organic Lab #12 - Wong Benny Experiment#12 Grignard...

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Unformatted text preview: Wong, Benny Experiment #12 Grignard Reactions: Formation of Triphenylmethanol Purpose The aim of the experiment is to form triphenylmethanol via a Grignard mechanism. Table 1: Physical Properties and Hazards of Chemicals used Molecular Formula Molecular Weight (g/mol) Boiling Point (ºC) Melting Point (ºC) Density (g/cm 3) Ill Effects Magnesium turnings Mg 24.31 1100 649 1.738 Highly flammable Bromobenzene C 6 H 5 Br 157.01 156-30.8 1.495 Skin, eye, lung irritant. Highly flammable Diethyl ether C 4 H 10 O 74.12 34.6-116.3 0.713 Skin, eye, lung irritant. Highly flammable Iodine I 126.90 184.3 113.7 4.933 Corrosive and may cause allergic reactions Methyl benzoate C 8 H 8 O 2 136.15 199.6-12.5 1.084 Skin, eye irritant. Water H 2 O 18.02 100 1.00 None Sulfuric Acid H 2 SO 4 99.08 337 10 1.84 Extremely corrosive Sodium Bisulfite NaHSO 3 104.06 n/a 150 1.48 Skin, eye irritant. May cause allergic reactions Sodium bicarbonate NaHCO 3 84.01 n/a 60 Balanced Equations Synthesis of Grignard Reagent C 6 H 5 —Br + Mg——————> C 6 H 5 —Mg—Br (C 2 H 5 ) 2 O Synthesis of Tripheynlmethanol C 6 H 5 COOCH 3 + C 6 H 5 —Mg—Br——————> (C 6 H 5 ) 3 COH H 2 SO 4 1 Wong, Benny...
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This note was uploaded on 02/16/2011 for the course CHEM 263 taught by Professor St-hilarie during the Spring '11 term at CUNY City.

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Organic Lab #12 - Wong Benny Experiment#12 Grignard...

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