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| Number | Title | Issue Date |
| 6933390 | Process for the arylation of aza-heterocycles with activated aromatics in presence of caesium carbonate The invention concerns a process for the preparation of N-aryl-aza-heterocycles of the general formula I by reaction of aza-heterocycles with activated aryl halides with use of caesium carbonate without addition of fur... | 08/23/2005 |
| 6437133 | Method of catalytically removing a protective group containing an allyl group using a reducing agent A method of efficiently removing the protective group from a protected hydroxyl or amino group with an allyl derivative by one step reaction under neutral conditions. A protected hydroxyl or amino group is converted into a free hydroxyl or amino group in ... | 08/20/2002 |
| 6235755 | FSH mimetics for the treatment of infertility The present invention provides non-peptidic amino derivatives, their therapeutic use as well as pharmaceutical compositions that possess activity as Follicle Stimulating Hormone (FSH) agonists and are useful in the for treatment of infertility. In particu... | 05/22/2001 |
| 5856516 | Process for the preparation of carbazole Carbazole can be prepared by dehydrogenation of compounds of the formula ##STR1## or by aminating dehydrogenation of compounds of the formula ##STR2## at 300° to 600° C. in the presence of hydrogen over an iridium catalyst or an iridium-contai... | 01/05/1999 |
| 5817831 | Alkylation of aromatic amines using a heterpoly catalyst Aliphatic hydrocarbyl-substituted aromatic amines are prepared by reacting an aromatic amine and an aliphatic hydrocarbylating agent, such as an olefin, in the presence of a heteropolyacid catalyst such as Cs2.5 H0.5 PW12 ... | 10/06/1998 |
| 5760247 | Process for the preparation of carbazole Diphenylamine can be dehydrocyclized on noble metal catalysts in the liquid phase at temperatures of 200° to 340° C. The reaction proceeds with a surprisingly high selectivity.... | 06/02/1998 |
| 5714606 | Pyrrolidine-containing monomers and oligomers The invention relates to pyrrolidine monomeric units and to oligomers which are joined via phosphate linkages, including phosphorothioate, phosphodiester and phosphoramidate linkages.... | 02/03/1998 |
| 5708178 | Thermally stable electro-optic device and method Novel acceptor-donor-acceptor and donor-acceptor-donor compounds for use in forming a thermally-stable electro-optic waveguide are disclosed. Also disclosed is a thermally stable waveguide material containing thermally stable acceptor-donor-acceptor or do... | 01/13/1998 |
| 5519134 | Pyrrolidine-containing monomers and oligomers Novel pyrrolidine monomers bearing various functional groups are used to prepare oligomeric structures. The pyrrolidine monomers can be joined via standard phosphate linkages including phosphodiester and phosphorothioate linkages. Useful functional groups... | 05/21/1996 |
| 5476644 | Cyclic triamine chelating agents The present invention provides compounds of the formula ##STR1## chelated with a paramagnetic metal ion wherein Z1 and Z2 each represent the atoms necessary to complete a monocyclic or polycyclic carbocyclic or heterocyclic ring system, said Z1 and Z... | 12/19/1995 |
| 4864033 | Novel liquid crystalline compounds and polymers The present invention relates to novel liquid crystalline compounds having the following formula: ##STR1## In the above formula, a is 1 or 2, or R1 and R2 may be virtually any chemical groups which will maintain the liquid cryst... | 09/05/1989 |
| 4628106 | Process for the preparation of 2-hydroxy-(9H)-carbazole The invention relates to a process for the preparation of 2-hydroxy-(9H)-carbazole. In this process, 1,2,3,4-tetrahydro-7-hydroxy-(9H)-carbazole is dehydrogenated in an inert organic solvent.... | 12/09/1986 |
| 4622420 | Chelating agents and method A simple method for making EDTA, ED3A or DTPA analogs from amide derivatives of alpha amino acids is disclosed. These EDTA, ED3A or DTPA analogs are useful chelating agents, and preferably are useful as bifunctional chelating agents which may be attached ... | 11/11/1986 |
| 4417048 | N-alkylation of organonitrogen compounds Organonitrogen compounds bearing a labile hydrogen atom directly bonded to a reactive nitrogen function, e.g., nitrogen heterocycles or substituted anilines, are N-alkylated with an N-alkylating agent in the presence of inorganic base and at least one seq... | 11/22/1983 |
| 4415468 | Deodorization of N-vinyl monomers This invention provides deodorized compositions and methods for preparing deodorized compositions comprising at least one odoriferous N-vinyl monomer (e.g., N-vinyl-2-pyrrolidone), and a sufficient deodorizing amount of an alkali metal bisulfite (e.g., Na... | 11/15/1983 |
| 4020059 | Process for preparing tertiary amines A process for preparing tertiary amines, which comprises reacting a carbonyl compound with a formyl derivative of a secondary amine at a temperature of 100° to 350° C in the presence of water and/or a lower alcohol with or without further presence of a ... | 04/26/1977 |
| 3992392 | Synthesis of indoles from anilines and intermediates therein Preparing indoles and intermediates therefor by reacting an N-haloaniline with a ଲ-carbonylic hydrocarbon sulfide to form an azasulfonium halide, reacting the azasulfonium halide with a strong base to form a thio-ether indole derivative, and then re... | 11/16/1976 |
| 3944565 | Process for preparing alkali metal salts of carbazole Alkali metal salts of carbazole are prepared by heating carbazole and alkali metal hydroxides with stirring in an organic solvent which forms an azeotrope with water, and removing the resulting water as an azeotrope from the reaction system. The resulting... | 03/16/1976 |
