Reference

Preparation of 2,5-furandicarboxaldehyde

Preparation of 2,5-furandicarboxaldehyde. Iovel, I. G.; Gavars, M.; Gaukhman, A. P.; Shimanskaya, M. V. (Institute of Organic Synthesis, Academy of Sciences, Latvian S.S.R., USSR). U.S.S.R. SU 1342903 A1 7 Oct 1987 From: Otkrytiya, Izobret. 1987, (37), 97. (Union of Soviet Socialist Republics) CODEN: URXXAF. CLASS: ICM: C07D307-46. ICS: B01J023-22; B01J023-28. APPLICATION: SU 86-4013326 27 Jan 1986. DOCUMENT TYPE: Patent CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) 2,5-Furandicarboxaldehyde (I) is prepd. by oxidn. of a furan deriv. with atm. O in the presence of a metal oxide catalyst supported on an inorg. adsorbent with heating. The yield of I is increased by using 2,5-dimethylfuran or 5-methylfurfural as the deriv. of furan, by oxidn. in a steam and gas phase in the presence of a catalyst consisting of V2O5 or a mixed V-Mo oxide catalyst contg. 15-60% V2O5 and 85-40% MoO3 supported on corundum, and by heating at 250-475°.

Complexes of lead(II) and lanthanide(III) ions with a macrocyclic ligand containing a furan head unit

Complexes of lead(II) and lanthanide(III) ions with a macrocyclic ligand containing a furan head unit. Crystal structure of a methanol inclusion compound of a novel macrocycle. Adams, Harry; Bastida, Rufina; De Blas, Andres; Carnota, Marina; Fenton, David E.; Macias, Alejandro; Rodriguez, Adolfo; Rodriguez-Blas, Teresa (Department of Chemistry, The University, Sheffield S3 7HF, UK). 823-82-5 and 187526-70-1 are also occured in this study. Polyhedron, Volume Date 1997, 16(4), 567-572 (English) 1996 Elsevier. CODEN: PLYHDE. ISSN: 0277-5387. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) Section cross-reference(s): 28, 75 A Schiff-base polyoxaazamacrocycle derived from 2,5-diformylfuran and 1,5-bis(2-aminophenoxy)-3-oxapentane was obtained by a template procedure as mononuclear lanthanide(III) and Pb(II) complexes. In the absence of the metal salt the macrocycle was not formed. The complexes were characterized by elemental anal., molar cond., mass spectrometry and IR, 1H NMR and 13C NMR spectroscopy. The redn. of the PbII complex with NaBH4 yielded a novel polyoxaazamacrocycle contg. a furan head and arom. lateral units; the x-ray crystal structure of its MeOH inclusion compd. is reported. .