Facile and efficient synthesis of C2-symmetrical 1,3,5-triazine polycarboxylate ligands under microwave irradiation
摘要:
A rapid and efficient method for preparation of C-2-symmetrical 1,3,5-triazine polycarboxylate ligands was developed. The reactions included either selective mono- or di-substitution of 2,4,6-trichloro-1,3,5-triazine with various nucleophiles containing carboxyl group(s), followed by nucleophilic displacement of the remained chloride(s) in aqueous media under microwave irradiation. Novel C-2-symmetrical tripodal ligands were afforded in good yields and purities under short reaction time with simple work-up, which are potentially useful as structural directing units in metal-organic frameworks. (C) 2014 Elsevier Ltd. All rights reserved.
Method for Producing a Compound with at Least One at Least Monosubstituted Amino Group
申请人:Dicke Rene
公开号:US20110105654A1
公开(公告)日:2011-05-05
The invention relates to a method for producing a compound having at least one mono substituted amino group. According to the invention, a starting substance supporting at least one amino group as reacted with a reagent supporting a first functional group and at least one other functional group in a reaction mixture. The first functional group is a hydroxyl group and the at least one other functional group is selected from hydroxyl groups, mercapto groups, carboxylic acid groups, carboxylic acid ester groups, carboxylic acid amide groups, keto groups, carbonate groups, halogens, epoxy groups and carbamate groups. If several other functional groups are present, the groups are selected independently of one another from the aforementioned class. Melamine, urea and guanamine are, in particular, reacted with glycol, glycerine and hydroxyl acetic acid derivatives.
Facile and efficient synthesis of C2-symmetrical 1,3,5-triazine polycarboxylate ligands under microwave irradiation
A rapid and efficient method for preparation of C-2-symmetrical 1,3,5-triazine polycarboxylate ligands was developed. The reactions included either selective mono- or di-substitution of 2,4,6-trichloro-1,3,5-triazine with various nucleophiles containing carboxyl group(s), followed by nucleophilic displacement of the remained chloride(s) in aqueous media under microwave irradiation. Novel C-2-symmetrical tripodal ligands were afforded in good yields and purities under short reaction time with simple work-up, which are potentially useful as structural directing units in metal-organic frameworks. (C) 2014 Elsevier Ltd. All rights reserved.
Lanthanide coordination polymers assembled from triazine-based flexible polycarboxylate ligands and their luminescent properties
1,3,5-triazine-2-iminodiacetic acid-4,6-bis(L-alanine) (H4L1) and 1,3,5-triazine-2-iminodiacetic acid-4,6-biglycine (H4L2), have been designed and used to construct a series of luminescentlanthanidecoordinationpolymers [Ln(HL1)](H2O)5}n (Ln = 1, Tb; 2, Eu; 3, Gd) and [Ln(HL2)(H2O)](H2O)2}n (Ln = 4, Tb; 5, Eu; 6, Gd). The complexes were structurally authenticated by single-crystal X-ray diffraction