Synthesis of phosphorus containing medium ring heterocycles by sequential Claisen rearrangement and ring closing metathesis |
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Authors: | KC Majumdar Raj Kumar NandiSintu Ganai |
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Institution: | Department of Chemistry, University of Kalyani, Kalyani 741235, W.B, India |
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Abstract: | An efficient method for the synthesis of novel medium ring phosphorus containing heterocycles starting from phenol derivatives by ruthenium catalyzed ring closing metathesis is described. This work deals with a sequential aromatic Claisen-rearrangement, coupling of an allyl/vinyl phosphonate, and ring closing metathesis reaction. All of these reactions were carried out at ambient temperature to afford the medium-sized phosphorus heterocycles in excellent yields. |
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Keywords: | Phosphorus heterocycles Medium-sized ring Claisen rearrangement Grubb&rsquo s I catalyst Ring closing metathesis |
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