Conclusion Of Methyl 2 Butanol

938 WordsDec 4, 20154 Pages
Conclusion 2-methyl-2-butanol was used to form 2-chloro-2-methylbutane with a calculated yield of 23.4% (2.28 g, 21.4 mmol). The major peaks for experimental 2-chloro-2-methylbutane was sp3 C-H stretch 2939-2977 cm-1 and C-Cl 798.29 cm-1. The major shifts in H NMR was δ1.55, s, 6H; 1.73, q, 2H; and 1.03, t, 3H. IR and h NMR indicted little to no contamination. Cyclohexanol was used to form cyclohexene with calculated yield of 11.0% (0.17 g, 2.07 mmol). The major IR peaks were 3373.23 cm-1 O-H stretch, 3022.05 =C-H stretch, 2935.76-2837.09 cm-1 C-H stretch, and 1652.61 cm-1 –C=C- stretch with two unknown peaks were found at 2658.32 cm-1 and 2359.64 cm-1. The major shifts for experimental H NMR was δ2.16, s, 6H, 5.70, s, 2H, 1.60, s, 4H, and 1.90, s, 4H. Through analysis of IR and H NMR, cyclohexene was not pure and most likely some O-H or acetone remained. Butanol was used to form bromobutane with percent yield of 30.0% (0.45 g, 3.28 mmol). For IR, the major peaks were 2960.35-2873.83 cm-1 and 643.30-561.87 cm-1. The literature values and experimental values for bromobutane were similar resulting in relative purity of desired product as indicted below in Table 5. The major shifts in H NMR was δ3.34, m, 4H; 1.85, m, 2H; 1.46, m, 2H; and 0.95, t, 3H; however two additional shifts for seen. First was at 2.17, s, 6H which is most likely acetone and the second was 1.56, s, 2H which is most likely water. The sample was not pure and was most likely contaminated
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