181 |
Pyridine/picoline production process |
US2363 |
1997-12-31 |
US5969143A |
1999-10-19 |
Arthur Chester; Scott Han; Dominick N. Mazzone; Chaya R. Venkat |
There is provided a high efficiency base synthesis process for shape selective production of pyridine and picoline products from ammonia and C.sub.1-5 carbonyl compounds. The process includes reacting ammonia and at least one C.sub.1-5 carbonyl reactant under suitable reaction conditions of temperature, pressure, and space velocity in the presence of a catalyst comprising a molecular sieve to produce a primary product comprising pyridine or picoline products and polyalkylpyridines or other higher molecular weight aromatic species, separating and collecting the pyridine or picoline products from the polyalkylpyridines or other higher molecular weight aromatic species, and circulating the polyalkylpyridines or other higher molecular weight aromatic species to the same or another catalyst under conversion conditions to yield additional pyridine or picoline products with substantially reduced amounts of polyalkylpyridines or other higher molecular weight aromatic species. |
182 |
Method for preparing aromatic compounds |
US876211 |
1997-06-16 |
US5886210A |
1999-03-23 |
Heather Lynnette Rayle; Randall Wayne Stephens |
A method for synthesizing aromatic compounds by selectively dehalogenating aromatic starting materials is provided. Compounds may be prepared which are substituted with fluoro, chloro or bromo. The method may be used to remove halogen atoms from sites at which halogenation is not desired, and to form substantially pure halogenated compounds from mixtures of starting materials. The method uses a copper containing dehalogenation agent and an acid with the dehalogenation being controlled by a substituent such as a carboxylic acid, amide, ester, aldehyde, ketone or cyano on the aromatic ring. |
183 |
Inverse solid phase synthesis |
US483143 |
1995-06-07 |
US5767238A |
1998-06-16 |
Lynn H. Caporale |
This invention relates to a method of inverse solid phase synthesis in which reactants are reacted in solution and a solid phase matrix is used to separate unreacted reactants from desired product. |
184 |
Process for the manufacture of selected halogenated hydrocarbons
containing fluorine and hydrogen and compositions provided therein |
US315025 |
1994-09-29 |
US5545769A |
1996-08-13 |
Ralph T. Baker; Richard P. Beatty; William B. Farnham; Robert L. 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 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 |
Method and apparatus for conducting an array of chemical reactions on a
support surface |
US68540 |
1993-05-27 |
US5474796A |
1995-12-12 |
Thomas M. Brennan |
The invention provides apparatus and methods for making arrays of functionalized binding sites on a support surface. The invention further provides apparatus and methods for sequencing oligonucleotides and for identifying the amino acid sequence of peptides that bind to biologically active macromolecules, by specifically binding biologically active macromolecules to arrays of peptides or peptide mimetics. |
186 |
Process for desulphurizing organic mercapto and/or disulphide compounds |
US255024 |
1994-06-07 |
US5463068A |
1995-10-31 |
Ferdinand Hagedorn; Helmut Fiege; Hans-Joachim Traenckner |
Organic compounds of reduced sulphur content and sulphur-free organic compounds can be prepared from organic mercapto and/or disulphide compounds in a particularly advantageous manner by hydrogenolytic elimination of hydrogen sulphide if the elimination of hydrogen sulphide is carried out in the presence of an organic solvent by means of an aqueous, non-oxidizing, strong acid and elemental iron, aluminium and/or zinc in the presence of catalytic amounts of nickel and/or cobalt. |
187 |
Method for inhibiting foulant formation in organic streams using
erythorbic acid or oximes |
US652943 |
1991-02-08 |
US5213678A |
1993-05-25 |
Kaj D. Rondum; Guy A. DeVicaris; Dwight E. Emerich |
A method for inhibiting fouling in an organic process stream by adding certain oximes, hydrazine, erythorbic acid, carbohydrazide, or mixtures thereof. The antifoulant is added to the organic stream as an aqueous solution. |
188 |
Method for conducting chemical reactions in polyphase systems |
US272442 |
1988-11-17 |
US5108654A |
1992-04-28 |
Vittorio Ragaini |
A method and apparatus for conducting chemical reactions in polyphase systems by using emulsifying means for the liquid components consisting of ultrasound emitters or turbines, in the absence or presence of a solid catalyst in fixed bed form with which the emulsified liquid components are brought into immediate contact by continuous circulation. |
189 |
Blanking process for reaction mixture |
US395176 |
1989-08-18 |
US5089572A |
1992-02-18 |
Gary R. Marchand; Joseph G. Schell, Jr.; Brian W. Walther; Corwin J. Bredeweg |
A process for blanking a reaction mixture utilizing as a blanking agent a difunctional lithium composition. |
190 |
Method for manufacturing bromine and bromine-iodine detergents and
disinfectants |
US851616 |
1977-11-14 |
US4131556A |
1978-12-26 |
Alojzy Klopotek; Jerzy Uminski; Gabriela Dziala |
A method for manufacturing bromine and bromine-iodine agents with detergent and disinfecting activity which comprises reacting a complex dibromineiodine ion [IBr.sub.2 ].sup.- or iodine bromide IBr with non-ionic surfactants, e.g. fatty alcohols extended with ethylene oxide, alkylphenols extended with ethylene oxide etc. When [IBr.sub.2 ].sup.- -ion is used in the synthesis, a bromine complex compound corresponding to the general formulaR--(OC.sub.n H.sub.2n).sub.x --OH . . . Br--Br . . . HO--(C.sub.n H.sub.2n O).sub.x --R,wherein R represents an alkyl, alkylamido, aryl or alkylaryl radical of 6-32 carbon atoms n is an integer from 2 to 4 and x is an integer representing the number of oxyalkylene groups and has a value from 2 to 50, is obtained.When using an IBr compound in the synthesis, a bromine-iodine complex compound corresponding to the formulaR--(OC.sub.n H.sub.2n).sub.x --OH . . . I--Br . . . HO--(C.sub.n H.sub.2n O).sub.x --R,wherein R, n and x have the meanings given above, is obtained.The bromine-iodine complex compounds are stabilized additionally with bromides of alkali metals or alkaline earth metals.On the basis of these compounds a wide range of efficient disinfectants and disinfectant detergents may be manufactured which can find application in medicine, veterinary medicine, agriculture, dairy and meat industries, etc. |
191 |
Adsorbent refining of organic compounds |
US3478009D |
1966-07-29 |
US3478009A |
1969-11-11 |
GENGE COLIN A |
|
192 |
Total synthesis by steroids and novel steroid intermediates |
US3449382D |
1966-07-27 |
US3449382A |
1969-06-10 |
AMIARD GASTON; NOMINE GERARD; TORELLI VESPERTO |
|
193 |
Epihalohydrin reaction products of phosphorous and sulfur oxygen acids and amines |
US24402062 |
1962-12-12 |
US3304349A |
1967-02-14 |
KWAN-TING SHEN |
|
194 |
Complexes of trivalent antimony with penicillamine, and admixtures of excess penicillamine with said complexes |
US32989863 |
1963-12-11 |
US3297531A |
1967-01-10 |
FRIEDHEIM ERNST A H |
|
195 |
Extractive distillation for the separation of mixtures containing unsaturated carboxylic acid esters and alcohols capable of forming azeotropic mixtures |
US10666261 |
1961-05-01 |
US3261767A |
1966-07-19 |
FRITZ KNORR; HELLMUTH SPES |
|
196 |
Process for the manufacture of carboxylic acid-tertiary alkyl esters |
US4608660 |
1960-07-29 |
US3167578A |
1965-01-26 |
HANS FERNBOLZ; EBERHARD MUNDLOS |
|
197 |
Purification of transesterification mixtures |
US26334963 |
1963-03-06 |
US3141013A |
1964-07-14 |
O'BOYLE CHARLES J |
|
198 |
Acyl isonitrile chromium pentacarbonyls |
US18339562 |
1962-03-29 |
US3136797A |
1964-06-09 |
MAGINN RAYMOND E |
|
199 |
Fixed bed regenerative refractory pyrolytic gas conversion process |
US62940756 |
1956-12-19 |
US2886615A |
1959-05-12 |
LINDAHL HAROLD A |
|
200 |
Reconstituting desorbent in an adsorption process |
US52275755 |
1955-07-18 |
US2854495A |
1958-09-30 |
DYCK FEAR JAMES VAN |
|