Detail of "110-60-1"

Reference

1,4-Diaminobutane derivatives

1,4-Diaminobutane derivatives. Zondler, Helmut; Moser, Roland; Audykowski, Thaddeus (Ciba-Geigy A.-G., Switz.). 5424-86-2 is the cas registry number. This chemical is also mentioned in this article. Ger. Offen. DE 2754509 15 Jun 1978, 39 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C07C087-28. PRIORITY: CH 76-15572 10 Dec 1976. DOCUMENT TYPE: Patent CA Section: 25 (Noncondensed Aromatic Compounds) Section cross-reference(s): 35 1,4-Butanediamines H2NCH2CRR1CHR2CH2NH2 (I; R = H or Me; R1, R2 independently = C6H4R3, where R3 = H, C1-3-alkyl, OMe, NMe2, Br, or Cl, or R2 = C1-3-alkyl), useful as hardening agents for epoxide resins, were prepd. by hydrogenating succinonitriles NCCRR1CHR2CN in the presence of Ac2O, then deacetylating the resultant bis[acetamides] by hydrolysis. Thus, NCCHPhCHPhCN was hydrogenated in the presence of Ac2O and the acetamide deacetylated by autoclaving with aq. NaOH to give I (R = H, R1 = R2 = Ph) which, when used to harden an epoxy resin prepd. from bisphenol A, gave a product superior to that obtained with a std. hardener, (4-H2NC6H4)2CH2. .

Formation of complexes of iron(III) with 1,4-butylenediamine-N,N,N',N'-tetraacetic acid (1,4-BDTA) in acid media

Formation of complexes of iron(III) with 1,4-butylenediamine-N,N,N',N'-tetraacetic acid (1,4-BDTA) in acid media. Yanez-Sedeno, P.; Cabrera Martin, A. (Fac. Cienc. Quim., Univ. Complutense Madrid, Madrid, Spain). An. Quim., Ser. B, 82(1), 101 (Spanish) 1986. CODEN: AQSAD3. ISSN: 0211-1349. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) Section cross-reference(s): 68 1,4-Butanediamine-N,N,N',N'-tetraacetic acid (H4L) reacts with Fe(III) in acid media to give Fe(HL) and FeL-. Fe(HL) was isolated from the solns. at pH <2 as a light yellow solid which shows at 1720-1740 cm-1 a small band due to the unionized free carboxylic group and at 1620-1630 cm-1 a more intense band due to the metal bound carboxylate group. For FeL- which is sol. in acid media, the stability const. was detd. in solns. at pH 2.00-2.50 to be 21.50 ± 0.07. At the max. wavelength of 252 nm the species does not show enough anal. sensibility to be used for the spectrophotometric detn. of Fe(III).