181 |
Catalyst, methods of producing it and methods of use |
US10121728 |
2002-04-15 |
US20020132863A1 |
2002-09-19 |
Robert
Schlogl; Michael
Wohlers; Thilo
Belz; Thomas
Braun |
A catalyst which consists of amorphous carbon with molecular planes that have curved surfaces and contain six-membered and non-six-membered carbon rings, optionally having at least one catalytically active, low-valency metal covalently bound thereto. Methods of producing the catalyst and applications thereof are included. |
182 |
Transfer hydrogenation process and catalyst |
US09381160 |
1999-11-09 |
US06372931B1 |
2002-04-16 |
Andrew John Blacker; Ben James Mellor |
A catalytic transfer hydrogenation process is provided. The catalyst employed in the process is a metal cyclopentadienyl complex which is coordinated to defined bidentate ligands. Preferred metals include rhodium, ruthenium and iridium. Preferred bidentate ligands are diamines and aminoalcohols, particularly those comprising chiral centers. The hydrogen donor is advantageously a secondary alcohol or a mixture of triethylamine and formic acid. The process can be employed to transfer hydrogenate ketones and imines, which are preferably prochiral. Catalysts for use in such a process are also provided. |
183 |
Shaped hydrogenation catalyst and processes for their preparation and use |
US347748 |
1999-07-06 |
US06049008A |
2000-04-11 |
Brian D. Roberts; William J. Carrick; Deepak S. Thakur |
Shaped catalyst compositions are disclosed comprising (i) at least one metal selected from the group consisting of copper, manganese, zinc, nickel, cobalt and iron, (ii) calcium silicate and (iii) at least one clay material. Also disclosed are a process for preparing the foregoing shaped compositions and a process for hydrogenating aldehydes, ketone, carboxylic acids, carboxylic acid esters and nitro aroniate compounds using these shaped catalysts. |
184 |
Process for the manufacture of selected halogenated hydrocarbons
containing fluorine and hydrogen and compositions provided therein |
US459011 |
1995-06-02 |
US5760282A |
1998-06-02 |
Ralph Thomas Baker; Richard Paul Beatty; William Brown Farnham; Robert Lewis Wallace, Jr. |
A process is disclosed for the manufacture of product compounds of the formula HC(R.sup.1).sub.2 C(R.sup.1).sub.2 C(R.sup.2).sub.2 C(R.sup.2).sub.2 H wherein each R.sup.1 is independently selected from the group consisting of H, F, Cl, CN, R, OR, CO.sub.2 R, C(O)R, OC(O)R, R.sup.f, OR.sup.f, CO.sub.2 R.sup.f C(O)R.sup.f and OC(O)R.sup.f where R is a hydrocarbyl group and R.sup.f is a C.sub.1 to C.sub.10 polyfluoroalkyl group, provided that at least one R.sup.1 is F, and wherein each R.sup.2 is independently selected from the group consisting of H, F, Cl, CN, R, OR, CO.sub.2 R, C(O)R, OC(O)R, R.sup.f, OR.sup.f, CO.sub.2 R.sup.f, C(O)R.sup.f, OC(O)R.sup.f and difunctional linkages where an R.sup.2 group on each of two adjacent carbon atoms together form a link selected from the group consisting of --CH.sub.2 CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 CH(CH.sub.3)--, --CH.sub.2 CH(CH.sub.3)CH.sub.2 --, --C(O)OC(O)--, and norborndiyl. The process involves reacting a metallacycle of the formula L.sub.m M(1,4-C(R.sup.1).sub.2 C(R.sup.1).sub.2 C(R.sup.2).sub.2 C(R.sup.2).sub.2 --) wherein R.sup.1 and R.sup.2 are as defined above, and wherein M is a metal selected from the group consisting of Group 8, Group 9 and Group 10 metals, each L is a ligand selected from the group consisting of Group 14, Group 15 and Group 16 ligands, and m is an integer from 1 to 4, in the liquid phase with hydrogen. Also disclosed are certain compositions comprising product compounds within the above product compound formula and certain metallacycle compounds within the above metallacycle formula. |
185 |
Process for the manufacturing of selected halogenated hydrocarbons
containing fluorine and hydrogen and compositions provided therein |
US458784 |
1995-06-02 |
US5670679A |
1997-09-23 |
Ralph Thomas Baker; Richard Paul Beatty; William Brown Farnham; Robert Lewis Wallace, Jr. |
A process is disclosed for the manufacture of product compounds of the formula HC(R.sup.1).sub.2 C(R.sup.1).sub.2 C(R.sup.2).sub.2 C(R.sup.2).sub.2 H wherein each R.sup.1 is independently selected from the group consisting of H, F, Cl, CN, R, OR, CO.sub.2 R, C(O)R, OC(O)R, R.sup.f, OR.sup.f, CO.sub.2 R.sup.f C(O)R.sup.f and OC(O)R.sup.f where R is a hydrocarbyl group and R.sup.f is a C.sub.1 to C.sub.10 polyfluoroalkyl group, provided that at least one R.sup.1 is F, and wherein each R.sup.2 is independently selected from the group consisting of H, F, Cl, CN, R, OR, CO.sub.2 R, C(O)R, OC(O)R, R.sup.f, OR.sup.f, CO.sub.2 R.sup.f, C(O)R.sup.f, OC(O)R.sup.f and difunctional linkages where an R.sup.2 group on each of two adjacent carbon atoms together form a link selected from the group consisting of --CH.sub.2 CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 CH(CH.sub.3 --, --CH.sub.2 CH(CH.sub.3)CH.sub.2 --, --C(O)OC(O)--, and norborndiyl. The process involves reacting a metallacycle of the formula L.sub.m M(1,4-C(R.sup.1).sub.2 C(R.sup.1).sub.2 C(R.sup.2).sub.2 C(R.sup.2).sub.2 --) wherein R.sup.1 and R.sup.2 are as defined above, and wherein M is a metal selected from the group consisting of Group 8, Group 9 and Group 10 metals, each L is a ligand selected from the group consisting of Group 14, Group 15 and Group 16 ligands, and m is an integer from 1 to 4, in the liquid phase with hydrogen. Also disclosed are certain compositions comprising product compounds within the above product compound formula and certain metallacycle compounds within the above metallacycle formula. |
186 |
Methods for the synthesis of chemical compounds |
US622918 |
1996-03-27 |
US5648571A |
1997-07-15 |
Charles J. Rogers; Alfred Kornel |
Methods for synthesis of chemical compounds by catalytic transfer hydrogenation comprise forming a mixture of a starting material, a hydrogen donor material and a catalyst. The catalyst is selected from a catalytic form of carbon, a polyethylene glycol phase transfer agent, and mixtures thereof. The mixture is heated at a temperature of from 30.degree. to 400.degree. C. in the presence of at least one alkali or alkaline earth metal compound to cause reduction of the starting material by catalytic transfer hydrogenation and form the desired chemical compound product. |
187 |
Methods for the synthesis of chemical compounds |
US191504 |
1994-02-04 |
US5478548A |
1995-12-26 |
Charles J. Rogers; Alfred Kornel |
Methods for synthesis of chemical compounds by catalytic transfer hydrogenation comprise forming a mixture of a starting material, a hydrogen donor material and a catalyst. The catalyst is selected from a catalytic form of carbon, a polyethylene glycol phase transfer agent, and mixtures thereof. The mixture is heated at a temperature of from 30.degree. to 400.degree. C. in the presence of at least one alkali or alkaline earth metal compound to cause reduction of the starting material by catalytic transfer hydrogenation and form the desired chemical compound product. |
188 |
Method for reducing an .alpha. .beta.-unsaturated ketone |
US169614 |
1993-12-17 |
US5459264A |
1995-10-17 |
Mitsuru Imuta; Makoto Kobayashi; Teruo Iizuka |
A method for reducing an .alpha.,.beta.-unsaturated ketone of the present invention includes the step of treating the .alpha.,.beta.-unsaturated ketone with a silyl compound in the presence of a Lewis acid and alcohol to selectively reduce the carbonyl group of the .alpha.,.beta.-unsaturated ketone. According to this method, a deoxy-compound can be obtained from the .alpha.,.beta.-unsaturated ketone by selectively reducing the carbonyl group without reducing an .alpha.,.beta.-unsaturated bond. |
189 |
Process for the dechlorination and/or debromination of fluorine-and
chlorine- and/or bromine-containing aromatic compounds |
US953209 |
1992-09-29 |
US5283378A |
1994-02-01 |
Dietmar Bielefeldt; Albrecht Marhold |
Fluorine- and chlorine- and/or bromine-containing aromatic compounds are dechlorinated and/or debrominated with hydrogen in an industrially advantageous and selective manner, if the palladium catalyst is present in stationary phase and the aromatic compound in gas phase. |
190 |
Reduction of nitro compounds with aqueous solutions of a formate |
US599345 |
1975-07-28 |
US4093646A |
1978-06-06 |
Peter Bamfield; Peter Michael Quan; Trevor James Smith |
A process for the reduction of organic nitro compounds containing groups which confer solubility in water comprising treatment of said compounds with an aqueous solution of a formate in presence of a hydrogenation catalyst. |
191 |
Reductive dimerization of acrylonitrile |
US3557186D |
1968-06-17 |
US3557186A |
1971-01-19 |
LEITNER HANS; WINTERSBERGER KARL |
A PROCESS FOR THE REDUCTIVE DIMERIZATION OF A,B-UNSATURATED NITRILES, AMIDES OR ESTERS SUSCEPTIBLE TO MICHAEL REACTION BY TREATMENT WITH ALKALI METAL OR ALKALINE EARTH METAL AMALGAMS IN THE PRESENCE OF COMPOUNDS WHICH ARE PROTON DONORS BUT DO NOT REACT APPRECIABLY UNDER THE REACTION CONDITIONS, PARTICULARLY WATER, AND IN THE PRESENCE OF HEXAMETHYLETHYLENETETRAMINE.
|
192 |
Reduction method of carbonyl group |
US3429876D |
1965-02-12 |
US3429876A |
1969-02-25 |
NAGATA WATARU; ITAZAKI HIROSHI |
|
193 |
Partial hydrogenation of aromatic compounds |
US51672465 |
1965-12-27 |
US3409684A |
1968-11-05 |
EUGENE ARISTOFF; RIEVE ROBERT W; HAROLD SHALIT |
|
194 |
Activated hydrogenation catalysts |
US22617562 |
1962-09-25 |
US3336239A |
1967-08-15 |
BAILEY DONALD L; COLIN EABORN |
|
195 |
Hydrogenation process |
US9830561 |
1961-03-27 |
US3205217A |
1965-09-07 |
JACK KWIATEK; MADOR IRVING L |
|
196 |
Nickel-titanium catalysts |
US50829155 |
1955-05-13 |
US2889286A |
1959-06-02 |
FAULKNER ALICE M |
|
197 |
Dehydrogenation of hydrocarbon oil and catalyst therefor |
US55723644 |
1944-10-04 |
US2481824A |
1949-09-13 |
CLAUSSEN WILLIAM H; WELLMAN HOMER B |
|
198 |
Hydrogenation catalyst and its preparation |
US1273635 |
1935-03-23 |
US2067368A |
1937-01-12 |
CLIFFORD WILLIAMS EVAN; MCALLISTER SUMNER H |
|
199 |
Process of reducing organic compounds |
US49553430 |
1930-11-13 |
US1971743A |
1934-08-28 |
HEINRICH BERTSCH |
|
200 |
Catalytic hydrogenation of nonnitrogenous organic compounds |
US25691728 |
1928-02-25 |
US1931846A |
1933-10-24 |
JAEGER ALPHONS O |
|