Sharif University of Technology Scientia Iranica 1026-3098 21 3 2014 06 01 An efficient synthesis of monoarylidene derivatives of pyran-4-one and piperidin-4-one An efficient synthesis of monoarylidene derivatives of pyran-4-one and piperidin-4-one 719 726 3510 EN Mohammad M. Mojtahedi Chemistry and Chemical Engineering Research Center of Iran P.O.Box 14335-186, ‎Tehran, Iran M. Saeed Abaee Chemistry and Chemical Engineering Research Center of Iran P.O.Box 14335-186, ‎Tehran, Iran Maedeh Samianifard Chemistry and Chemical Engineering Research Center of Iran P.O.Box 14335-186, ‎Tehran, Iran Akram Shamloo Chemistry and Chemical Engineering Research Center of Iran P.O.Box 14335-186, ‎Tehran, Iran Journal Article 2014 02 23 A room-temperature procedure is developed for the direct synthesis of monoarylidene derivatives of pyran-4-one and piperidin-4-one systems under solvent-free conditions. Relatively high yields of products are obtained from the reaction of ketones 1 with different aromatic and aliphatic aldehydes under the catalytic system of TMSNMe2 and MgBr2·OEt2. Notably, formation of the undesired bis counterparts as a major limitation of these reaction types, is minimized using the employed conditions. https://scientiairanica.sharif.edu/article_3510_15e122e839dfdaa7ce969536f94aecf6.pdf