[3] D. R. P. 103,578; Frdl. 5, 101 (1899).

[4] D. R. P. 105,103; Frdl. 5, 107 (1899).

[5] D. R. P. 105,105; Frdl. 5, 109 (1899).

[6] D. R. P. 108,086; Frdl. 5, 117 (1899).

[7] D. R. P. 118,567; Frdl. 6, 133 (1901).

[8] Ber. 37, 858 (1904); J. Biol. Chem. 41, 146 (1920).



VI

ETHYL OXALATE

(CO2H)2 + 2 C2H5OH--> (CO2C2H5)2 + 2H2O

Prepared by H. T. CLARKE and ANNE W. DAVIS. Checked by ROGER ADAMS
and W. B. BURNETT.

1. Procedure


IN a 5-l. flask are placed 1 kg. of crystallized (hydrated) oxalic
acid, 1.66 kg. of 95 per cent ethyl alcohol, and 1.33 kg.
of carbon tetrachloride. The flask is then fitted with a fractionating