?Program 94ieIntegrative Exercises[18.94] The valuable
Chapter , Problem 94ie(choose chapter or problem)
The valuable polymer polyurethane is made by a condensation reaction of alcohols (ROH) with compounds that contain an isocyanate group (RNCO). Two reactions that can generate a urethane monomer are shown here:
(a) Which process, i or ii, is greener? Explain.
(b) What are the hybridization and geometry of the carbon atoms in each C-containing compound in each reaction?
(c) If you wanted to promote the formation of the isocyanate intermediate in each reaction, what could you do, using Le Châtelier's principle?
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