1. ARYLGLYOXYLIC ESTERS, FRIEDEL-CRAFTS REACTION
2. The Formation of 3,3'-Thenil in the Reaction Between 3-Thienyl-lithium and Dimethyl Oxalate at -70 degrees C.
3. Gronowitz, S.“Advances in Heterocyclic Chemistry”, Edited by: Katritzky, A. R. Vol 1, 75New York: Academic Press.
4. Gronowitz, S. The infrared spectrum of the glyoxylic esters showed two sharp strong bands in−1the carbonyl stretching region at 1730 to 1740 and 1670 to 1680 cm−1.