1,4,5,8-naphthalenetetra-carboxylic dianhydride (NTDA), phloroglucinol, 2-Fluoro-5-Nitrobenzotrifluoride, hydrazine hydrate, 10% palladium on charcoal (Pd/C), m-cresol, triethylamine (TEA), dimethyl sulfoxide (DMSO), dimethylacetamide (DMAC), 4,4′-oxydianiline (ODA), 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane (6FODA), and 4,4′-(9-fluorenylidene)dianiline (BFDA) were purchased from Energy Chemical Co., Shanghai, China. 4,4′-Diamino-2,2′-biphenyldisulfonic acid (DAPS, 75%) was purchased from Dibo Chemical Reagent Co., Shanghai, China. Unless otherwise noted, all other reagents were used directly. DMSO, DMAC, m-cresol, toluene, and TEA were dried using 4-Å molecular sieves prior to use. DAPS was recrystallized using triethylamine and hydrochloric acid. ODA, 6FODA, and BFDA were dried in a vacuum at 80 °C for 6 h before use, and NTDA was dried in a vacuum at 120 °C for 24 h before use.
Hydrazine hydrate
Manufactured by Energy Chemical
Sourced in China
Hydrazine hydrate is a clear, colorless liquid chemical compound. It has the chemical formula N2H4·H2O and is the hydrated form of hydrazine. The core function of hydrazine hydrate is as a chemical reagent and intermediate in various industrial processes.
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3 protocols using hydrazine hydrate
1
Synthesis of Polyimide Precursors
2
Synthesis and Characterization of Novel Compounds
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Dehydroepiandrosterone, NBS, hydrazine hydrate, phloxine B, isocyanate, isothiocyanate substituents and other regents were purchased from Energy Chemical (Shanghai) Co. Ltd. China. All regents and solvent (analytical grade) used without further purification. 1H-NMR (600 MHz) and 13C-NMR (150 MHz) were recorded on a Bruker Avance DRX400 instrument (Bruker, Karlsruhe, Germany), using tetramethylsilane (TMS) as internal standards. Melting points (mp) were determined on an MP120 auto melting point apparatus (Haineng, Jinan, China). Mass spectra (ESI) of all compounds were recorded on Esquire 6000 mass spectrometer (Bruker, Karlsruhe, Germany). Flash chromatography was performed using 400 mesh silica gel.
3
Synthesis and Characterization of Fluorescent Dyes
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Hydrazine hydrate (98 %), benzaldehyde (98 %), and methanesulfonic acid (99 %) were purchased from Energy Chemical. 3‐(Diethylamino)phenol (97 %, Sigma–Aldrich Chemical Co.), phthalic anhydride (Tianjin Fuchen Chemical Reagents Factory), 2‐methylresorcinol (98 %, J&K Scientific Ltd.), isothiocyanato benzene (Adamas), sodium hypochlorite (Tianjin Fuyu Chemical Reagents Factory), and other materials for the synthesis were used without further purification. All chemicals used for the synthesis were of analytical grade. Methanol for analysis was of spectroscopy grade. Copper(II) perchlorate, sodium(I) perchlorate, lead(II) perchlorate trihydrate, cadmium(II) perchlorate hexahydrate, lithium(I) perchlorate, magnesium(II) perchlorate, cobalt(II) perchlorate, and iron(II) perchlorate hydrate were of reagent grade (RG) and were purchased from Alfa Aesar. Zinc(II) perchlorate hexahydrate (RG, Aladdin Chemical Co., Ltd.), barium(II) perchlorate (RG, Sigma–Aldrich Chemical Co.), and silver(I) perchlorate (analytical grade (AR), Energy Chemical) were obtained from the indicated vendors, and nickel(II) perchlorate hexahydrate and mercury(II) perchlorate trihydrate with purities above 99.0 % were purchased from Strem Chemicals, Inc.
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