Inhibition of impurities formation in the synthesis of N-alkyltheobromines stimulated by microwave irradiation. Cationic and anionic response of membrane electrodes [0.03%]
微波促进下N-烷基茶碱合成中杂质抑制的研究阴、阳膜电极的催化反应性能研究
A Skwierawska,A Pazik
A Skwierawska
N-Alkyltheobromine (1-9) derivatives were obtained by reacting theobromine with appropriate alkyl halide under microwave irradiation at 100-150 W and by conventional synthesis. Formation of by-products of oxygen atom alkylation and 1-N-alky...
N-(4-amino-7-nitrobenzaoxa-1,3-diazole)-substituted aza crown ethers: complexation with alkali, alkaline earth metal ions and ammonium [0.03%]
含氮杂冠醚与碱金属、碱土金属及铵离子的络合研究：4-氨基-7-硝基苯并[1,3]氧氮杂环化合物的取代反应
Nelly N Mateeva,Shihab D Deiab,Edikan E Archibong et al.
Nelly N Mateeva et al.
Three novel aza-crown ether derivatives incorporating 4-amino-7-nitrobenzaoxa-1,3-diazole (NBD) chromophore were synthesized and their structure confirmed by (1)H-NMR, IR and elemental analysis. The influence of the solvent polarity and pro...
Dustin E Gross,Dae-Wi Yoon,Vincent M Lynch et al.
Dustin E Gross et al.
A comparative study of the halide and benzoate anion binding properties of a series of phenyl, pyrrole, and furan-strapped calix[4]pyrroles has been carried out. These receptors, which have previously been shown to bind the chloride anion (...