M. Saeed Abaee - Chemistry and Chemical Engineering Research Center of Iran, P.O.Box ۱۴۳۳۵-۱۸۶, Tehran, Iran
Mohammad M. Mojtahedi - Chemistry and Chemical Engineering Research Center of Iran, P.O.Box ۱۴۳۳۵-۱۸۶, Tehran, Iran
Ehsan Mehraki - Chemistry and Chemical Engineering Research Center of Iran, P.O.Box ۱۴۳۳۵-۱۸۶, Tehran, Iran
Amir H. Balazadeh - Chemistry Department, Islamic Azad University, Saveh Branch, Saveh, Iran

An efficient condensation of various aldehydes with thiopyran-4-one is developed in one pot using catalytic quantities of CrCl3.7H2O and SDS in the presence of H2O/pyrrolidine at room temperature. The procedure leads to high yield preparation of bisarylmethylidenes of thiopyran-4-one in relatively short times. Spontaneous precipitation occurs at the end of the process. This leads to easy separation of the products via a simple filtration

Bisarylmethylidenes, aldol condensation, aqueous conditions, organocatalysis, thiopyran