10 RESEARCH PAPER JANUARY, 10–11 JOURNAL OF CHEMICAL RESEARCH 2006 ... Synthesis of 4-hydroxy-4-methylcyclohex-2-en-1-one Vesile Parladar, M. Serdar Gültekin and Murat Çelik* Department of Chemistry, Atatürk University, 25240 Erzurum, Turkey ... 4-Hydroxy-4-methylcyclohex -2-en-1-one was synthesised from 4-methylanisole. The key step is the regioselective reaction of singlet oxygen with 4-methylcyclohex-3-en-1-one. ... Keywords: singlet oxygen, ...