摘要:
Compounds of the formula D-S1-A-S2—B1 wherein A comprises a 2,7-disubstituted 9,9-fluoroalkyl fluorene diradical of the formula wherein S1, S2, D and B1 have meanings given in the description that are useful as charge transport and emissive materials for the fabrication of electronic devices such as diodes, transistors, and photovoltaic devices.
摘要:
The present disclosure relates, in general, to 5-halo-3,6-dichlorosalicylic acid compounds, 5-halo-3,6-dichlorosalicyaldehyde compounds, processes for preparing 5-halo-3,6-dichlorosalicylic acid compounds, processes for preparing 5-halo-3,6-dichlorosalicyaldehyde compounds, processes for preparing 3,6-dichlorosalicylic acid compounds, and processes that employ such compounds as intermediates in the preparation of the herbicide dicamba.
摘要:
A method of catalytic oxidation of a lignite using oxygen as an oxidant at atmospheric pressure is provided. The method includes the following steps, pulverizing the lignite to 200-mesh or less; drying the pulverized lignite at a temperature of 80° C. in vacuum for 10 h; weighing 0.5 g of the dried lignite and sequentially adding 10 ml of acetic acid, 0.5 mmol of a catalyst and 0.15-0.25 mmol of a cocatalyst into a round-bottom flask filled with the oxygen, keeping oxygen pressure at 0.1 MPa, reacting at a temperature of 80-120° C. for 4-12 h; using oxygen as the oxidant to catalytically oxidize the reacted lignite at an atmospheric pressure of 0.1 MPa; filtering after the reaction is finished; decompressing the filtrate to remove the acetic acid, adding a small amount of ethyl acetate to dissolve, and using an excess CH2N2/ether solution to esterify for 10 h at room temperature; and analyzing the esterified product through a gas chromatography-mass spectrometer.
摘要:
Compounds of the formula D-S1-A-S2—B1 wherein A comprises a 2,7-disubstituted 9,9-fluoroalkyl fluorene diradical of the formula wherein S1, S2, D and B1 have meanings given in the description that are useful as charge transport and emissive materials for the fabrication of electronic devices such as diodes, transistors, and photovoltaic devices.
摘要:
The present invention relates to metallic zinc cluster compounds which are suitable as catalysts in the reaction of amines with dialkyl carbonates to produce carbamates. The invention is also directed towards a method for the alkoxycarbonylation of amines. The cluster compound has a general formula which may be written as [M(O2C—R)2]x.[MO]y.[H2O]z, wherein M is Zn, R is an unsubstituted or substituted aromatic, cycloaliphatic, linear aliphatic, or other organic rest, x is 1, y is ≥x is 1, y is ≥0.03 to ≤26.0 and z is >0.00 to ≤17.0.
摘要:
The problem of providing a metal complex having excellent gas adsorption performance, gas storage performance, and gas separation performance is solved by a metal complex comprising a dicarboxylic acid compound (I) including 20 to 99 mole % of a dicarboxylic acid compound (I-1) selected from terephthalic acid derivatives having an electron-donating group in the 2nd position such as 2-methoxyterephthalic acid, 2-methylterephthalic acid, and terephthalic acid, and 80 to 1 mole % of a dicarboxylic acid compound (I-2) selected from terephthalic acid derivatives having an electron-withdrawing group in the 2nd position such as 2-nitroterephthalic acid, 2-fluoroterephthalic acid, 2-chloroterephthalic acid, 2-bromoterephthalic acid, and 2-iodoterephthalic acid; at least one kind of metal ion selected from metal ions belonging to Group 2 and Groups 7 to 12 of the periodic table; and an organic ligand capable of bidentate binding to the metal ion.
摘要:
The presently disclosed and/or claimed inventive concept(s) relates generally to retro-aldol reaction products and methods of making and using same. More particularly, but without limitation, the methods disclosed herein for producing the retro-aldol reaction products are performed in a non-aqueous/solvent-free based process. The reaction products obtained from the process include, for example, dihydroxyacetone, glyceraldehyde, glycolaldehyde, and combinations thereof. In one particular embodiment, the process of making such retro-aldol reaction products includes, without limitation, the step of mechanocatalytically reacting a heterogeneous catalyst with one or more sugar reactants.
摘要:
The present invention relates to esters of carboxylic acid agrochemicals comprising a labile protecting group and having formula (I). Certain of the esters of carboxylic acid agrochemicals do not undergo hydrolysis to a significant degree in the dark, but are cleaved to regenerate the parent carboxylic acid agrochemical when exposed to light. Others of the esters of carboxylic acid agrochemicals undergo hydrolysis under both light and dark conditions. The present invention further relates to methods for the controlled release of a carboxylic acid agrochemicals, and to methods of controlling unwanted plants comprising applying to the unwanted plants an ester of a carboxylic acid agrochemical.
摘要:
A liquid crystal composition containing a liquid crystal molecule, a compound represented by the formula (1), and a compound represented by the formula (2) can provide a film with a reduced haze.
摘要:
A compound of formula (I) wherein Rf is —CF3, —C2F5, or —CF2CFXCF3; X is —F, or —OC3F7; Y is —H, —Cl, or —Br; R is —OH, —(CH2)nOH, —(OCH2CH2)mOH, —(CH2)n(OCH2CH2)mOH, —O—C(O)—R1, —(CH2)nO—C(O)—R1, —(OCH2CH2)mOC(O)—R1, —C(O)NHw(CH2CH2OH)2-w, —C≡N, —C≡CH, or —C(O)R2; n is 1 to 10; m is 1 to 10; R1 is C1 to C10 alkyl; R2 is —H, C1 to C10 alkyl, —Cl, or —OCH2CH2OH; a is 1 to 5; b is 1 to 5; and w is 0, 1 or 2.