| 摘要 |
PROBLEM TO BE SOLVED: To produce carbonate in high yield by reacting carbon dioxide with carboxylic acid orthoester in the presence of metal alkoxide and halide. SOLUTION: This objective compound is obtained by reacting carbon dioxide with carboxylic acid orthoester (e.g. methyl orthoformate) shown by the formula R<1> C(OR<2> )3 (R<1> is H, etc.; and R<2> is an alkyl, etc.), in the presence of a metal alkoxide [e.g. Sn(OMe)4 (Me is a methyl), etc.], shown by the formula (R<3> )nM (OR<4> )4-n (R<3> and R<4> are each an alkyl, etc.; (n) is 0 to 3; and M is a metal) and halide (e.g. quaternary phosphonium salt or quaternary ammonium salt) preferably at room temperatures to 20 deg.C under the pressure of 1 to 500 atm. for 1 to 100 hrs. |
