Download PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... An easy, high yield, large scale, and atom economical, synthesis of the valuable acetylene dicarboxaldehyde dimethyl and tetramethyl acetals was described starting from 2,5-dimethoxy-2,5-furan. ... An easy, high yield, large scale, and atom economical, synthesis of the valuable acetylene ...