Abstract
An efficient route for the construction of 1H-pyrrol-2-ylphosphonates via the [3+2] cycloaddition of phosphonate azomethine ylides with ynones is described. This transformation proceeds with good functional group tolerance under mild conditions with good efficiency and selectivity. And the synthesis of 1H-pyrrol-2-ylphosphonates could also be achieved via the three-component reaction of benzaldehydes, aminomethyl phosphonates and ynones.
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