Preparation of 1,4-Benzothiazines Using Stable Phosphorus Ylides

Mohammad Reza Islami Department of Chemistry, Shahid ahonar University of Kerman, Kerman, Iran

Said Gharib-Hosseini Department of Chemistry, Shahid ahonar University of Kerman, Kerman, Iran

Hamid Reza Bijanzadeh Department of Chemistry, Tarbiat Modarres University, Tehran, Iran

Abstract

Heating of stable phosphorus ylides in boiling dioxane as a solvent results in ring closure with extrusion alcohol and triphenyphosphine and to give alkyl-2-(3-oxo-3,4-dihydro-2H-1,4-benzothiazin-2-yliden)acetates in good to excellent yields.

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We thank the Shahid Bahonar University for financial support as a Grant-in-Aid for Scientific Research.

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Preparation of 1,4-Benzothiazines Using Stable Phosphorus Ylides

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Preparation of 1,4-Benzothiazines Using Stable Phosphorus Ylides

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