Diane Dickie - Attempted production of Dimethyl Carbonate (DMC).

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      Loch, Aruny, Dickie, Diane A., Stewart, Constantine A., Kemp,   Richard A. SERM-60-

      Abstract: We try to synthesize di-Me carbonate   (DMC) to replace phosgene, a highly toxic reactant used, for   example, in synthesis of polymers. Results from several routes to   reach this goal are shown. The first study is about transition   metals complexes (Ni2+, Cu2+, Co2+) with ligand cyclam. These   complexes present an easily uptake of CO2 to give (monomethyl   carbonato)-Ni2+, Cu2+, Co2+ complexes with cyclam. From these   complexes, we tried to ext. DMC with a second addn. of methanol   with CO2 at high temp. and high pressure. Another tried route is   to form bicyclam in order to synthesize bimetallic bicyclam. In   fact, we know that in dialkyl dimethoxy tin complexes gives DMC   under high pressure because two groups -OCH3 in close environment   allow formation of DMC. A last study is about   pyridine-azamacrocyles (PyMac) with Lewis base ligand arm which   can influence the second addn. of methanol. [on SciFinder(R)]

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