Synthesis, Table of Contents PAPER© Georg Thieme Verlag Stuttgart ˙ New YorkA Novel Method for the Synthesis of Oxazolocoumarin DerivativesEssam Abdelghani*, Ali Abd El-Aal, Wesam Shehab, Medhat El-MobayedChemistry Department, Faculty of Science, Zagazig University, Zagazig, Egypte-Mail: e_abdelghani58@hotmail.com; Recommend Article Abstract Buy Article All articles of this category Abstract Anodic oxidation of 7-hydroxycoumarin derivatives 1a-f in anhyd acetonitrile-lithium perchlorate at constant potential between 1.70-1.80 V (vs. Ag/10-2 M Ag+) using an undivided cell and platinium gauze electrodes leads to the formation of the corresponding oxazolocoumarin derivatives 2 and/or 3 according to the position of the second OH group in the benzene ring of the coumarin derivatives 1e,f. The formation of these oxidation products is discussed. Key words oxidations - carbocations - coumarins - electrochemistry - quinones Full Text References References <A NAME="RT01803SS-1">1</A> Goto T. Yamamura S. Pyran Compounds, In Methodicum Chimicum Part 3, Vol. 11: Korte F. Goto M. Academic Press; New York: 1978. <A NAME="RT01803SS-2">2</A> Suttie AB. Tetrahedron Lett. 1969, 953 <A NAME="RT01803SS-3">3</A> Popp G. Retiz NG. J. Org. Chem. 1972, 37: 3646 <A NAME="RT01803SS-4">4</A> El-Mobayed M. Ismail N. Abo-El-Enein G. Abdel-Haleem E. J. Chem. Soc. Pak. 1986, 8: 305 <A NAME="RT01803SS-5">5</A> Furniss BS. Hannaford AJ. Rogers V. Smith PWG. Tatchell AR. Vogel’s Textbook of Practical Organic Chemistry 4th ed.: Addison-Wesley; Reading MA: 1978. <A NAME="RT01803SS-6">6</A> Chatterji D. Chakraborty DP. J. Indian Chem. Soc. 1972, 49: 1045 <A NAME="RT01803SS-7">7</A> Jiarong L. Ailion T. Mingshi W. Zhong Caoyao 1982, 13: 493 <A NAME="RT01803SS-8">8</A> Hutinec A. Ziogas A. El-Mobayed M. Rieker A. J. Chem. Soc., Perkin Trans. 1 1998, 2201 <A NAME="RT01803SS-9">9</A> Reischl G. El-Mobayed M. Beisswenger R. Regier K. Mossmer CM. Rieker A. Z. Naturforsch., B: Chem. Sci. 1998, 53: 765 <A NAME="RT01803SS-10">10</A> Coetzee JF. Gunningham GP. McCuire DK. Padmanabhan GR. Anal. Chem. 1962, 34: 1138 <A NAME="RT01803SS-11">11</A> Domschke G. Oelmann H. J. Prakt. Chem. 1969, 311: 800 <A NAME="RT01803SS-12">12</A> Dreher EL. Brancht J. El-Mobayed M. Winter W. Rieker A. Chem. Ber. 1982, 115: 288 <A NAME="RT01803SS-13">13</A> Papauchado L. Petrie G. Adams RN. J. Electroanal. Chem. 1972, 38: 389 <A NAME="RT01803SS-14">14</A> El-Farargy AF. J. Chem. Soc. Pak. 1991, 13: 59
