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Article Abstract
An enantioselective [4 + 1] cycloaddition reaction of ortho-quinone methides and bromomalonates using a quinine and BINOL derived phase-transfer catalyst is described. With high yields and enantioselectivities, the method provided a variety of optically active dihydrobenzofurans, which represent a valuable structural motif present in numerous naturally occurring and biologically active molecules.
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| http://dx.doi.org/10.1039/c7ob00484b | DOI Listing |
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