Synthesis, structural characterization and electrochemical study of 1,1′-ferrocenylene labeled amino acids
摘要:
Unsymmetrical 1,1'-disubstituted ferrocenes bearing an amino acid moiety and a conjugated electron density controlling substituent were synthesized conveniently starting from 1,1'-ferrocenedicarbaldehyde. The novel ferrocene amino acid derivatives were completely characterized from their MS, H-1 NMR and C-13 NMR spectra. Their electrochemical behavior was studied by cyclic voltammetry. Their formal redox potentials E-f were slightly influenced by the nature of the amino acid and mainly by the kind of the ethenyl substituent. Furthermore all the (Z)-isomers exhibited a slight anodic shift compared with the corresponding (E)-isomers. (c) 2006 Elsevier B.V. All rights reserved.
A variety of new 5-alkenyluracils has been prepared in high yields by Wittigolefination of 5-formyl-1-octy-luracil, 5-formyl-1,3-dioctyluracil and 5-formyl-2,4-dimethoxy pyrimidine with stabilized and semistabi-lized phosphorus ylides. The conformation of the products is discussed on the basis of 1H NMR spectral data.
高纯度的各种新的5-烯基尿嘧啶是通过将稳定化的5-甲酰基-1-辛基-尿嘧啶,5-甲酰基-1,3-二辛基尿嘧啶和5-甲酰基-2,4-二甲氧基嘧啶进行Wittig烯化反应而制得的。半稳定的磷化氢。基于1 H NMR光谱数据讨论产物的构象。