N,N,N',N'-tetramethylethylene-diaminium-N,N'-disulfonic acid chloride as a highly effective catalyst for the synthesis of 4H-pyrano[2, 3-c]pyrazoles, α-carbamatoalkyl-β-naphthols and α-amidoalkyl-β-naphthols
نویسندگان
1 Department of Chemistry, Payame Noor University, PO Box 19395-3697 Tehran, Iran
2 Department of Chemistry, Payame Noor University, PO Box 19395-3697 Tehran, Iran
3 Department of Chemistry, Payame Noor University, PO BOX 19395-3697, Tehran, Iran
4 Department of Chemistry, Payame Noor University, PO Box 19395-3697 Tehran, Iran
5 Department of Chemistry, Payame Noor University, PO Box 19395-3697 Tehran, Iran
6 Department of Chemistry, Payame Noor University, PO Box 19395-3697 Tehran, Iran
7 Department of Chemistry, Payame Noor University, PO Box 19395-3697 Tehran, Iran
8 Department of Chemistry, Payame Noor University, PO BOX 19395-3697, Tehran, Iran
doi
10.22034/AJGC/2020.2.5چکیده
In this work, N,N,N',N'-tetramethylethylene-diaminium-N,N'-disulfonic acid chloride {[TMEDSA][Cl]2} has been utilized as a highly effective catalyst in order to promote the following organic transformations under green, solvent-free and mild conditions: (i) the synthesis of 4H-pyrano[2, 3-c]pyrazoles from aromatic aldehydes, 3-methyl-1-phenyl-2-pyrazolin-5-one and malononitrile, (ii) the preparation of α-carbamatoalkyl-β-naphthols from arylaldehydes, β-naphthol and alkyl carbamates, and (iii) the production of α-amidoalkyl-β-naphthols from arylaldehydes, β-naphthol and amides.
