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| Number | Title | Issue Date |
| 7368604 | Method for the production of acylphosphine oxides Process for the preparation of aromatic acylphosphine oxides (II) in which aromatic carboxyphosphines (I) are converted to the acylphosphine oxides (II) ... | 05/06/2008 |
| 7241885 | Process for the isolation of crystalline imipenem The present invention relates to a cost effective and industrially advantageous process for the preparation of imipenem of high purity comprising the steps of treating an aqueous solution containing imipenem with an organic solvent, wherein the imipenem is not lyoph... | 07/10/2007 |
| 4960928 | 1-Hydroxy-omega-(alkyl- or arylphosphinico)alkane-1,1-diphosphonic acids, salts thereof, and processes for the preparation of these compounds The present invention relates to 1-hydroxy-ω-(alkyl- or arylphosphinico)alkane-1,1-diphosphonic acids of the general formula I ##STR1## and to the salts of these acids of the general formula II ##STR2## where, in these formulae, R1 d... | 10/02/1990 |
| 4753757 | Process for preparing solid acetyl phosphate salt A salt of monoacetyl phosphate which is useful in the field of enzymatic reactions can be obtained as a precipitate by using a specified amount of lithium ion as a precipitating agent in the process for the acetylation of phosphoric acid or its salt with ... | 06/28/1988 |
| 4138433 | Process for preparing 1,2-oxa-phospholanes Preparation of 2,5-dioxo-1,2-oxa-phospholanes having general formula (I) ##STR1## wherein R1 represents an alkyl group being optionally substituted and having up to 18 carbon atoms, a cycloalkyl group having up to 8 carbon atoms, an alkeny... | 02/06/1979 |
| 4104181 | Additives comprising (N, N-diorganothiocarbamyl) phosphorothioites and lubricant compositions containing the same Novel (N, N-diorganothiocarbamyl) phosphorothioites having the following general structures: ##STR1## and mixtures thereof impart good antiwear and EP properties to lubricant compositions (e.g. gear oils and cutting oils) containing them.... | 08/01/1978 |
| 4096182 | Process for the simultaneous preparation of 2,5-dioxo-1,2-oxa-phospholanes and ଲ-halogenpropionic acid halide 2,5-Dioxo-1,2-oxa-phospholanes of the formula (I) ##STR1## wherein R1 is an organic radical and R2 and R3 each also represents an organic radical or hydrogen, are prepared by reacting 2-haloformylethyl-phosphinic acid... | 06/20/1978 |
| 4096334 | Process for the manufacture of carbodiimides Organic carbodiimides are prepared by heating isocyanates of formula R -- (NCO)n wherein R is an organic radical and n is 1 or 2 In the presence of 2-methyl-2,5-dioxo-1-oxa-2-phospholane having the structure ##STR1## as catalyst as temperatures... | 06/20/1978 |
| 4088675 | Production of acyl phosphate salts Acyl phosphate salts suitable for use as phosphate donors in the production of cofactors, such as adenosine triphosphate, are prepared by acylation of phosphoric acid with a ketene, followed by reaction with ammonia or an amine. The reaction product, e.g.... | 05/09/1978 |
| 4062888 | Continuous production of 2,5-dioxo-1-oxa-2-phospholanes Continuous production of 2,5-dioxo-1-oxa-2-phospholanes of the general formula ##STR1## from a beta-halogenoformyl-ethyl phosphinic acid halide of the general formula in which formula R1 stands for an alkyl radical having 1, 2, 3 or 4 ... | 12/13/1977 |
| 4035176 | N-(perfluoroacyl)-N-phosphonomethyl glycine compounds, method of preparing same N-(perfluoroacyl)-N-phosphonomethyl glycine compounds are prepared by the reaction of N-phosphonomethyl glycine with perfluoroacyl anhydrides employing an excess of the perfluoroalkanoic acid as the solvent. The N-(perfluoroacyl)-N-phosphonomethyl glycine... | 07/12/1977 |
| 4016048 | Distillative purification of 2,5-dioxo-1-oxa-2-phospholanes 2,5 DIOXO-1-OXA-2-PHOSPHOLANES OF THE GENERAL FORMULA: ##STR1## in which R1 stands for an alkyl radical having from 1 to 4 carbon atoms, or a phenyl radical, and R2 and R3 each stand for hydrogen or CH3, ar... | 04/05/1977 |
| 3989525 | H-isopropyl-2-chloroethane-(thiono)-phosphonic acid ester amide compounds and herbicidal compositions New N-isopropyl-2-chloroethane-(thiono)-phosphonic acid ester amides of the general formula: ##EQU1## wherein X is oxygen or sulfur, and R is acetyl or a group of the formula ##EQU2## wherein X' is oxygen or sulfur, R' is alkoxy with 1 to 4 carb... | 11/02/1976 |
