%0 Journal Article %T Synthesis of 1-[(2-Oxonaphthalen-1(2H)-ylidene)methyl]urea %A Jiehua Xu %A Anjun Chen %A Qingjian Liu %J Molbank %D 2009 %I MDPI AG %R 10.3390/m595 %X An unexpected product, 1-[(2-oxonaphthalen-1(2H)-ylidene)methyl]urea 4 of the condensation reaction of 2-hydroxy-1-naphthaldehyde with or without ethyl benzoylacetate and urea under hydrochloric acid-catalyzed and solvent-free conditions is reported. %K 1-[(2-Oxonaphthalen-1(2H)-ylidene)methyl]urea %K Condensation reaction Solvent-free conditions %U http://www.mdpi.com/1422-8599/2009/1/M595