摘要:
The invention comprises the product of reacting under neutral non-aqueous conditions a transition metal carbonyl or a derivative thereof with an acetylene compound the product having the formula where M is a transition metal, N is a carbonyl group or a substituted carbonyl group, R1 and R11 each represent hydrogen or an organic group or substituted derivatives thereof or an organo substituted hydride group, C2 represents direct carbon to carbon bonding, x is an integer from 1 to 3, y is an integer from 2 to 12 and z is an integer from 1 to 5. M may be iron, znickel, ruthenium, rhodium, palladium, osmium iridium, manganese, rhenium, chromium, molybdenum or tungsten. The triple bond in the acetylene compound is converted into a double or single bond. If desired, the transition metal carbonyl may be prepared in situ from the metal and carbon monoxide; alternatively, a metal salt and a reducing agent may be used. The acetylene compound may be substituted by an organic group such as an alkyl, alkenyl, alkynyl, cycloaliphatic, aryl or alkylaryl group or a functional group such as -COH, -CN, -halogen, -OH, -NR2, -COOR wherein R is hydrogen, an aliphatic or aromatic radical or a hydrocarbon group substituted by such a functional group. The products may be separated by chromatography or by fractional crystallisation. From 2.5 to 6.0 moles of acetylenic compound may be used per mol of metal carbonyl. The temperature of reaction varies from room temperature up to 300 DEG C. If desired, the carbonyl groups on the metal may be partially substituted by radicals such as nitrosyl, substituted isonitrile, substituted phosphines, substituted arsines, substituted stibines and their halides and fully substituted aromatic systems. Complicated ring systems may be formed by heating the compounds of the invention, thus 1,3,5-triphenylbenzene is obtained by heating Fe2(CO)6(C6H5.C2H)3 or Fe(CO)4(C6H5.C2H)3 to about 170 DEG C. Heating Fe(CO)4(C6H5.C2.C6H5)2 to about 200 DEG C. yields tetraphenylcyclopentadienone, and heating Fe(CO)2(CH3OOC.C2.COOCH3)3 to 180 DEG C. yields the hexamethyl ester of mellitic acid.ALSO:Complexes obtained by heating a transition metal carbonyl and an acetylenic compound (see Group IV(b)) may be decomposed thermally to produce metal mirrors and films. Thus glass cloth may be coated with iron by heating the cloth in a sealed tube containing Fe2(CO)6-(C6H5.C2.C6H5) 2.
摘要:
To provide a monomer composition in which the solubility of the polymerization inhibitor in the cyclic monomer is good, the stability of the cyclic monomer during storage is good, and the cyclic monomer and the polymerization inhibitor are easily separated by distillation; and a method for producing a high molecular weight fluorinated polymer from the monomer composition.A monomer composition which comprises a specific cyclic monomer and a polymerization inhibitor, wherein the polymerization inhibitor is a polymerization inhibitor which satisfies (a) it is a 6-membered unsaturated cyclic hydrocarbon having from 1 to 4 substituents, (b) it has, as the substituent, at least one type selected from the group consisting of a t-butyl group, a methyl group, an isopropenyl group, an oxo group and a hydroxy group, (c) in a case where it has an oxo group as one type of the substituent, it has, as the substituent other than the oxo group, either one or both of a t-butyl group and a methyl group, and (d) in a case where it has a hydroxy group as the substituent, the number of the hydroxy group is only one.
摘要:
A method of producing thymoquinone and/or thymohydroquinone in Monarda by growing Monarda with elevated levels of carvacrol and/or thymol in the fresh plant tissue and vigorous growth, harvesting the Monarda, leaving the Monarda to senensce in the presence of oxygen and extracting the thymoquinone and/or thymohydroquinone from the senesced tissue.
摘要:
The subject invention relates to improved tocopheryl quinine derivatives and tocopherol derivatives having improved pharmacokinetics in vivo that can, in some embodiments, be useful in the treatment of Lysosomal Storage Disorder, restoration of normal mitochondrial ATP production, modulation of intracellular calcium ion concentration and other treatments or therapies. The tocopheryl quinone derivatives and tocopherol derivatives have side chains that have terminally halogenated carbon atoms.
摘要:
Methods are provided for synthesis of abscisic acid and 8′ analogues thereof (including an enantiopure 8′-acetylene analogue) including methods wherein the previously reported first step of oxidation of 2,6-dimethylphenol (VI) to 2,6-dimethylbenzoquinone, mono ketal (VII) is replaced by a novel two step process comprising (i) oxidation of 2,6-dimethylphenol (VI) using potassium peroxymonosulfate with a catalytic amount of iodobenzene to produce 2,6-dimethylbenzoquinone (XVI) and (ii) ketalization of 2,6-dimethylbenzoquinone (XVI) using ethylene glycol, trimethylorthoformate with a catalytic amount of p-toluenesulfonic acid to produce 2,6-dimethylbenzoquinone, mono ketal (VII).
摘要:
A method for producing an arene with an aromatic C—N bond ortho to an aromatic C—O bond from a hydroxy arene comprising said aromatic C—O bond is provided. This method comprising the steps a) ortho-oxygenating the hydroxy arene to produce an ortho-quinone, b) condensating the ortho-quinone with a nitrogen nucleophile to generate a compound of Formula (IVa) or (IVb), and c) allowing 1,5-hydrogen atom shift of the compound of Formula (IVa) or (IVb), thereby producing arenes with a C—N bond ortho to a C—O bond of Formula (Va) and (Vb), respectively: