1071-93-8Relevant articles and documents
Enzymatic hydrazinolysis of diesters and synthesis of N-aminosuccinimide derivatives
Astorga,Rebolledo,Gotor
, p. 287 - 289 (1993)
Selective hydrazinolysis of diesters is catalyzed by PS lipase. This enzyme is an efficient catalyst for the preparation of N-aminosuccinimide derivatives.
Coordination polymeric fluorescent gel: effect of removal of branch substituents of the central core over properties
Pandey, Vinay Kumar,Singh, Vikas Kumar,Chandra, Subhash,Hasan, Syed Hadi
, p. 1537 - 1546 (2019)
A fluorescent gel has been prepared by deprotonation of non-fluorescent adipic acid derived ligand (H4AL) with LiOH followed by coordination with Cd(II) in DMF. The mechanism of gelation is examined by IR, 1H NMR, UV-vis, Job’s plot, PXRD, SEM and TEM. Chelation enhanced fluorescence by Cd(II) has been established by fluorescence experiments. In addition to synthesis and characterization of this gel, we compared the gel properties by varying the core of the ligand using citric (H6CL) acid derivatives.
Synthesis, and characterization of low- and high-spin manganese(II) complexes of polyfunctional adipoyldihydrazone: Effect of coordination of N-donor ligands on stereo-redox chemistry
Basumatary, Debajani,Lal, Ram Ashray,Kumar, Arvind
, p. 122 - 129 (2015)
Manganese(II) complexes [MnII(npahH2)] (1), [MnII(npahH2)(A)2] and [MnII(npahH2)(NN)] (where A = pyridine, (2); 2-picoline, (3); 3-picoline, (4); 4-picoline, (5) and NN = 2,2′ bipyridine, (6); 1,10-phenanthroline, (7)) have been synthesized from bis(2-hydroxy-1-naphthaldehyde)adipoyldihydrazone (npahH4) in methanol. The composition of metal complexes has been established by elemental analyses. Complexes (1) and (3) have been characterized by mass spectral data also. Structural assessments of the complexes have been based on data obtained from molar conductance, magnetic moment, electronic, electron paramagnetic resonance and infrared spectral studies. Conductivity measurements in DMSO suggest that they are non-electrolyte. Electronic spectral studies suggest a six-coordinate octahedral geometry around the manganese center in complexes (2) to (7) and square-planar geometry in complex (1). IR spectral studies reveal that the dihydrazone coordinates to the metal in keto form with an anti-cis configuration. Magnetic moment, and EPR studies suggest manganese in +2 oxidation state in all complexes with high-spin distorted octahedral stereochemistry in complexes (2-7) while low-spin square-planar stereochemistry is involved with significant metal-metal interactions in the solid state in complex (1). Cyclic voltammetric studies reveal that the metal center cycles among the MnII → MnI → Mn0 in complexes (2) to (7) and among MnII → MnI oxidation states in complex (1).
PRECURSOR COMPOUNDS OF ESTER COMPOUNDS
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Paragraph 00109; 00118-00119; 00120, (2020/12/30)
The present disclosure relates to compounds of the formula (I) which are precursor compounds of esters, whereby upon hydrolysis of the precursor compound, an ester compound is released. This ester precursor approach can be useful for applications where controlled release of, for example, ethyl formate, is beneficial.
Synthesis method of adipic acid dihydrazide
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Paragraph 0016-0030, (2019/05/28)
The invention provides a synthesis method of adipic acid dihydrazide. The adipic acid dihydrazide is synthesized according to a two-step method. The synthesis method comprises the following steps: performing an esterification reaction on adipic acid and a mixture of methanol and ethanol under the catalysis of potassium hydrogen sulfate and concentrated sulfuric acid to synthesize dimethyl/diethyladipate, then performing an acylhydrazine reaction on the dimethyl/diethyl adipate and hydrazine hydrate to obtain the adipic acid dihydrazide. The obtained finished adipic acid dihydrazide product has the conversion rate of 98-99%; according to the synthesis method, the esterification reaction yield and the catalytic activity are greatly improved, and catalysts are easier and more convenient to recycle and can be reused for more times; the synthesis method is economical, practical, and convenient for industrial production.