Synthesis
Tetramethoxymethane has been prepared by heating a solution of Sodium Methoxide in methanol with chloropicrin, Trichloroacetonitrile, or thiocarbonyl perchlorate; the best yields have been obtained with the perchlorate. Alternatively, disodium hexamethoxystannate (prepared in situ from sodium methoxide and tetrachlorostannane) can be refluxed with Carbon Disulfide in methanol to form the orthocarbonate.
Purification Methods
Tetramethyl orthocarbonate (methyl orthocarbonate, tetramethoxy methane) [1850-14-2] M 136.2, m -5.6o, -5o, -2o, b 113.5o/760mm, 113.5 -114o/755mm, 112-114o/atm, d 4 1.0202, n D 1.3860. Purify it in the same way as for tetraethyl orthocarbonate. [Smith Acta Chem Scand 10 1006 1956, Tiekelmann & Post J Org Chem 13 266 1948, Kantlehner et al. Synthesis 73 1977, Beilstein 3 IV 4.]