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Nano silica-bonded aminoethylpiperazine: a highly efficient and reusable heterogeneous catalyst for the synthesis of 4H-chromene and 12H-chromeno[2,3-d]pyrimidine derivatives

Crossref DOI link: https://doi.org/10.1007/s13738-015-0607-y

Published Online: 2015-02-24

Published Print: 2015-08

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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