An efficient protocol for the synthesis of six-membered N, O-heterocycles via a 1,3-dipolar (3+3) cycloaddition between nitrile oxide and α-diazo esters
2017
Kuruba, Bharath Kumar | Vasanthkumar, Samuel
In this manuscript, we are reporting an efficient protocol for the construction of highly functionalized N, O-heterocyclic derivatives such as 1,2,4-oxadiazine and 1,4,2-dioxazine-6-carboxylate derivatives via a 1,3-dipolar (3 + 3) cycloaddition between nitrile oxide and unprotected α-diazo esters in the presence of 2 mol% Cu(OTf)2 catalyst. The expected N, O-heterocycles were obtained in excellent yields. These N, O-heterocycles are known to exhibit insecticidal and acaricidal properties.
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