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- W2950400358 abstract "The formation of carboxylic esters via reaction of carboxylic acids with O-alkylisoureas proceeds in excellent yields with very short reaction times when conducted in a monomode microwave synthesizer. Efficient processes were developed using preformed or commercially available isoureas derived from primary and secondary alcohols, with a reaction time of only 5 min or less. It was demonstrated that under these microwave conditions, ester formation proceeded in good yields with clean inversion of configuration where appropriate. The process was validated using menthol, a hindered substrate for SN2 reactions. In addition, starting from primary alcohols, ester formation was successfully accomplished using an in situ isourea formation procedure. A polymer-assisted solution-phase procedure was also developed by employing preformed solid-supported isoureas and by an efficient “catch and release” ester formation procedure whereby primary alcohols were caught on resin as isoureas by reaction with immobilized carbo..." @default.
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- W2950400358 date "2009-12-08" @default.
- W2950400358 modified "2023-09-27" @default.
- W2950400358 title "ChemInform Abstract: Microwave-Assisted Ester Formation Using O-Alkylisoureas: A Convenient Method for the Synthesis of Esters with Inversion of Configuration." @default.
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- W2950400358 doi "https://doi.org/10.1002/chin.200949044" @default.
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