Synthesis of New Iron-Containing Carbon Cages by Reaction of C60 Fullerene with Ferrocene

Reaction of C₆₀ fullerene with ferrocene in the presence of aluminum chloride and aluminum in an inert atmosphere gave ferrocenyl-substituted fullerene 2C₆₀ ·1.5(C₅H₅)₂Fe ·3H₂O. The product is a thermally stable iron-containing carbon cage in which the intersphere cavity is formed by three C₆₀ polyhedra and is closed by cyclopentadienyl ligands via formation of four carbon-carbon bonds.     

Synthesis of unsaturated esters of pyridine- and quinolinedicarboxylic acids

The divinyl, diallyl, and dipropargyl esters of pyridine-2,4-, pyridine-2,6-, and quinoline-2,4-dicarboxylic acids and the divinyl and dipropargyl esters of pyridine-2,5-dicarboxylic acid have been synthesized.     

PHOTOTROPISM–THE NEED FOR A SENSE OF DIRECTION?

Abstract— The ill defined nature of the conceptual framework used to guide research on phototropism is a handicap to progress. It is argued that some of the central concepts, such as the stimulus perception-transduction-response chain, have not given a useful sense of direction. Likewise the arguments as to whether hormones are involved in phototropism have now become a distraction. A constructive phase is now needed, building on an agreed framework. There is an urgent need to identify the universal elements of phototropism and to distinguish those elements from the ones which apply only in specialised cases.     

Synthese, structure cristalline et spectres infrarouges de l''acide β-alanyl amino methyl phosphonique

β-Alanyl aminomethylphosphonic acid (β-ala AMPh) has been studied in the solid state by X-ray diffraction and vibration spectrometry. It crystallizes (space group P1&;#x0304; with Z = 4) as a zwitterion with, in the asymétrie unit, two independent molecules the conformations of which are quite different. The hydrogen bonding network is very complicated. Because the infrared spectra are very complicated, only a partial correlation of the vibrations of ammonium, amide and phosphonic groups is proposed.     

Five-membered-ring-substituted 1-methyl-1H-indeno[1,2-b]pyridines

1-Methyl-1H-indeno[1,2-b]pyridine and 1-methyl-1H-5-(, -dicarbomethoxyvinyl)-(formyl, acetyl)indeno[3,2-b]pyridines were obtained by treatment of N-methyl-4-azafluorenium iodide, as well as mixtures of it with acetylenedicarboxylic ester, dimethylformamide (DMF), and phosphorus oxychloride or acetic anhydride, with bases. 4-Azafluoronenone was used to synthesize 9-(p-methoxyphenyl)-4-azafluoren-9-ol, which was reduced to 9-(p-methoxyphenyl)-4-azafluorene, and 1-methyl-1H-5-(p-methoxyphenyl)indeno[3,2-b]pyridine was obtained from the methiodide of the latter.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1382–1386, October, 1981.