The synthesis of a number of novel dibenzene-1,2-diol Mannich bases can be achieved in good yields by the condensation of 2-methoxyphenol, formaldehyde and secondary diamines. The newly developed synthetic method utilizes 2-methoxyphenol instead of benzene-1,2-diol providing a useful tool for greater control over reaction products.
The synthesis of a number of novel dibenzene-1,2-diol Mannich bases can be achieved in good yields by the condensation of 2-methoxyphenol, formaldehyde and secondary diamines. The newly developed synthetic method utilizes 2-methoxyphenol instead of benzene-1,2-diol providing a useful tool for greater control over reaction products.
Benzene-1 2-diol mannich bases ligands polymers and method of selective metal ions removal
申请人:——
公开号:US20040138488A1
公开(公告)日:2004-07-15
A complexing ligand for forming a complex with a cation, the ligand comprising an aromatic component including two or more attachment sites for the cation, an optionally substituted amine, such as an aminoalkylene group, and a hydrocarbon chain of from 1 to 12 carbon atoms in length. The amine component of the ligand is capable of taking on an internal counterion (H+) so that the complex of the target cation and ligand has an overall neutral charge. Such ligands can be used to extract a target cation or cations from an aqueous solution. This has particular application for the separation of aluminium and silicon in aqueous liqors in a Bayer process. The ligand can be a simple compound formed by the Mannich condensation of catechol with formaldehyde and an amine. The ligand may alternatively be a bis-ligand, a polymer or an ion exchange resin. A range of new compounds and intermediates are also described.
BENZENE-1 2-DIOL MANNICH BASES LIGANDS POLYMERS AND METHOD OF SELECTIVE METAL IONS REMOVAL
申请人:TECHNOLOGICAL RESOURCES PTY. LTD.
公开号:EP1366015A1
公开(公告)日:2003-12-03
[EN] BENZENE-1 2-DIOL MANNICH BASES LIGANDS POLYMERS AND METHOD OF SELECTIVE METAL IONS REMOVAL<br/>[FR] BASES DE MANNICH DE BENZENE-1 2-DIOL, LIGANDS, POLYMERES, ET METHODE D'ELIMINATION SELECTIVE D'IONS METALLIQUES
申请人:TECH RESOURCES PTY LTD
公开号:WO2002070456A1
公开(公告)日:2002-09-12
A complexing ligand for forming a complex with a cation, the ligand comprising an aromatic component including two or more attachment sites for the cation, an optionally substituted amine, such as an aminoalkylene group, and a hydrocarbon chain of from 1 to 12 carbon atoms in length. The amine component of the ligand is capable of taking on an internal counterion (H+) so that the complex of the target cation and ligand has an overall neutral charge. Such ligands can be used to extract a target cation or cations from an aqueous solution. This has particular application for the separation of aluminium and silicon in aqueous liqors in a Bayer process. The ligand can be a simple compound formed by the Mannich condensation of catechol with formaldehyde and an amine. The ligand may alternatively be a bis-ligand, a polymer or an ion exchange resin. A range of new compounds and intermediates are also described.
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作者:Marcus J. Caulfield、Tiziana Russo、David H. Solomon
DOI:10.1071/ch00079
日期:——
The synthesis of a number of novel dibenzene-1,2-diol Mannich bases can be achieved in good yields by the condensation of 2-methoxyphenol, formaldehyde and secondary diamines. The newly developed synthetic method utilizes 2-methoxyphenol instead of benzene-1,2-diol providing a useful tool for greater control over reaction products.