Abstract
An efficient and high-yielding procedure for the selective transesterification of various β-keto esters using 3-nitrobenzeneboronic acid as a catalyst in an environmentally acceptable process is described.
Key words
β-keto esters - 3-nitrobenzeneboronic acid - environmentally benign - selective reaction
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Typical Procedure (Table 1, entry 8) : Ethyl acetoacetate (5 mmol), 3-nitrobenzyl alcohol (5 mmol) and 3-nitro-benzeneboronic acid (21 mg, 2.5 mol%) in 20 mL of toluene was heated at reflux for the time allotted (Table
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