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Show how you would convert propan-1-ol to the following compounds using tosylate intermediates. You may use whatever additional reagents are needed. Part A propan-1-ol to 1-bromopropane TsClpyridine, then NaOCH2CH3 TsCl/pyridine, then NaBr TsCl/pyridine, then KCN TsCl/pyridine, then excess NH3 propan-1-ol to propan-1-amine, CH3CH2CH2NH2 TsCl/pyridine, then NaOCH2CH3 TsCl/pyridine, then NaBr TsCl/pyridine, then KCN TsCl/pyridine, then excess NH3 propan-1-ol to CH3CH2CH2OCH2CH3 ethyl propyl ether TsCl/pyridine, then NaOCH2CH3 TsCl/pyridine, then NaBr TsCl/pyridine, then KCN TsCl/pyridine, then excess NH3 propan-1-ol to CH3CH2CH2CN butyronitrile TsCl/pyridine, then NaOCH2CH3 TsCl/ pyridine, then NaBr TsCl /pyridine, then KCN TsCl/pyridine, then excess NH3