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JP2602639B2 |
PURPOSE: To safely obtain an acyl fluoride derivative useful as a synthetic intermediate for medicines and agrochemicals in a high yield by a simple operations by reacting a carbinol derivative with a lead compound in the presence of a s...
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JPH09104642A |
To obtain a mixed acid anhydride useful for functional materials, dyes, medicines, agrochemicals or photographic chemicals, or as an intermediate therefor, without deposition of the hydrohalogenide salt of an amine as a dehydrohalogenati...
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JPH0975735A |
To obtain a catalyst less liable to cause the leaching of sulfuric acid even in the case of use in a polar solvent such as water or alcohol with satisfactory reproducibility by washing a sulfuric acid-contg. solid acid catalyst with one ...
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JP2588695B2 |
PURPOSE: To easily obtain the subject compound in high reaction rate and high selectivity without forming any byproduct by oxidizing an (alkyl)aromatic compound with a new solid cerium (IV) compound as oxidant. CONSTITUTION: This compoun...
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JPH0957110A |
To obtain a Lewis acid catalyst accelerated in reaction speed in org. synthesizing reaction due to various electron withdrawing reactions and in creased in catalytic activity by using a complex having a perfluoroalkanesulfonylamide group...
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JP2580538B2 |
PURPOSE: To selectively acetalize the specific sites of a saccharide in a good yield by reacting the saccharide with a bulky organic group-having thiocarbonyl compound in the presence of a base and a silver salt or a copper salt, while i...
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JP2580736B2 |
Optically active hydroxybenzylamine derivatives of the Formula: wherein R<1> denotes a hydrogen atom, lower alkyl group or lower alkoxy group; R<2> denotes a lower alkyl group; * signifies an asymmetric carbon atom; and the hydroxyl grou...
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JP2577941B2 |
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JPH09500860A |
(57) [Summary] In the production of substituted β-zeolites, high ethene pressure is favorably used along with aging of synthetic gels and low aluminum content.
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JP2573734B2 |
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JP2571081B2 |
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JP2571080B2 |
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JPH09500106A |
PCT No. PCT/EP94/01936 Sec. 371 Date May 1, 1996 Sec. 102(e) Date May 1, 1996 PCT Filed Jun. 14, 1994 PCT Pub. No. WO94/29018 PCT Pub. Date Dec. 22, 1994An exothermic chemical reaction, for example, hydroformylation, is carried out in a ...
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JPH093002A |
PURPOSE: To esterify a polyhydric alcohol to an ester useful as raw material for polymeric material, biomaterial, etc., in high yield and short time using an easily available raw material by reacting a carboxylic acid with a polyhydric a...
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JP2568196B2 |
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JP2563077B2 |
PURPOSE: To efficiently O-alkylate a phenolic compound by reacting the phenolic compound with an alkanol in gaseous phase using an effective amount of catalyst selected from trivalent rare earth metal orthophosphates. CONSTITUTION: O-alk...
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JPH08325190A |
To reduce waste materials and prepare the subject compound without using a heavy metal in high yield so that an amine by-product can be regenerated by reacting specific raw materials in one pot, producing a Mannich base and then eliminat...
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JPH08325193A |
PURPOSE: To obtain an olefinic carboxylic acid compound using raw materials having low toxicity in high yield in such a state that by-products are hardly formed and purification is facilitated by reacting a specific cyclopropane derivati...
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JPH08325167A |
To obtain a reagent having an alkoxyl group having an unsaturated group at the β-position, e.g. propargyl, benzyl or allyl group and useful for cleaving an unsaturated alkoyloxycarbonyl functional group. (A) A reagent comprising (I) an ...
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JP2558055B2 |
PURPOSE: To provide new compounds useful as reducing agents for functional organic compounds. CONSTITUTION: A compound of the formula (wherein X represents Cl, Br or I; (y) is 0 to 6; (n) is 1 to 3; ether is a 2-30C aliphatic or cycloali...
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JP2558051B2 |
PURPOSE: To provide the subject reagent having excellent selectivity and useful for peptide synthesis or the like comprising an aqueous phase, a specific catalyst and a nucelophilic compound soluble in water, which cleaves unsaturated al...
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JP2549047B2 |
PURPOSE: To obtain an industrially advantageous method for producing a mixed acid anhydride in which a fatty acid chloride can effectively be utilized by the presence of an organic tertiary amine and the mixed acid anhydride can simultan...
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JP2546559B2 |
PURPOSE: To obtain the compound useful as a highly reactive reagent without purification by bringing a boranemethylsufide into contact with a pinene and then reacting it with an acid chloride. CONSTITUTION: A diisopinocamphenylborane of ...
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JP2547089B2 |
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JPH08509906A |
An exothermic process for forming a product which may be in liquid phase is disclosed wherein a first reactant (3), preferably a liquid reactant, is directly fed into a reaction (10) containing mixing elements (12, 58) and which comprise...
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JP2543522B2 |
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JPH08509701A |
In the method proposed for the production of monocarboxylic acids from carbohydrates, carbohydrate derivatives or primary alcohols, the carbohydrates, carbohydrate derivatives or primary alcohols are oxidized continuously in aqueous solu...
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JPH08259491A |
To obtain a carbonyl compound useful as an intermediate of organic synthesis without using an expensive oxidizing agent at a low temperature in a high conversion, high selectivity and safely by subjecting olefins to catalytic oxidation i...
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JPH08245443A |
To provide a method for reutilizing a combustible diluting gas component used as a reactional diluent medium and inert to a reaction as, e.g. an energy source for a thermoelectric generator. This method for continuously operated heteroge...
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JPH08245642A |
PURPOSE: To obtain an alcohol in a good efficiency, useful as a raw material for the synthesis of a medicine, an agrochemical, etc., by reducing a ketonic compound in the presence of a specific lewis acid. CONSTITUTION: This asymmetric a...
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JPH08245645A |
PURPOSE: To obtain an optically active amino alcohols-boron-based compound extremely useful as an asymmetric reducing agent of ketones, etc. CONSTITUTION: This compound is expresses by formula I (R1 is H, methyl, ethyl, etc.; * is an asy...
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JP2535018B2 |
1. A process for the acylation of an aromatic by the Friedel-Crafts method, wherein the acylation is carried out in the presence of a metalalkyl or metalalkyl halide of a metal or semimetal of main groups two to five and/or of a metal of...
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JP2530675B2 |
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JPH08225475A |
PURPOSE: To obtain halomethylphenylcarbinols having high optical purity by reducing a halomethylphenyl ketone by using an asymmetrically reducing agent obtained from a specific β-aminoalcohol and boranes. CONSTITUTION: This compound of ...
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JP2526963B2 |
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JP2524738B2 |
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JP2525127B2 |
The borane reduction of prochiral ketones to optically pure alcohols is effectively achieved by the utilization of catalytic amounts of the new and valuable oxazaborolidine catalysts of formula (I).
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JPH08208543A |
PURPOSE: To rapidly obtain alcohols useful as a synthetic intermediate for medicines, etc., in high yield under mild conditions by reducing a carboxylic acid using a borane-pyridine complex as a reducing agent in the coexistence of a Lew...
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JP2521695B2 |
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JP2517340B2 |
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JP2516618B2 |
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JPH08176039A |
PURPOSE: To obtain the subject compounds having high optical puritties from halomethylphenyl ketones and facilitate post-treatment after reaction by using an asymmetric reducing agent obtained from a specific β-aminoalcohol and boranes....
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JPH08176055A |
PURPOSE: To obtain an oxo compound in high selectivity and in high yield without requiring an expensive catalyst and specific facilities by treating a secondary OH-containing compound with a hypochlorite in water under acidic conditions ...
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JP2509206B2 |
A solid product of the formula Ce(CH3SO3)20.2H2O, Ce(CH3SO3)2(OH)2.H2O or other hydrates is disclosed and used as a highly effective oxidant to produce carbonyl containing products from aromatic and alkyl aromatic compounds.
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JPH08157416A |
PURPOSE: To obtain an ester of an alcohol having low reactivity especially owing to steric hindrance on an industrial scale at a low cost by reacting an alcohol with an acid anhydride or a mixed acid anhydride in the presence of a fluori...
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JP2507543B2 |
6-Aliphatic C2-20-carboxylic acid esters of ascorbic acid are prepared by esterifying the ascorbic acid with an aliphatic C2-20-carboxylic acid halide in the presence of an N,N-dialkylalkanecarboxamide, a cyclic amide of the 1-methyl-2- ...
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JP2504629B2 |
PURPOSE: To provide a method for acylating an alkyl arom. compd. by Friedel- Crafts reaction using a carboxylic deriv. in the presence of a Friedel-Crafts catalyst and an org. aluminum compd. CONSTITUTION: An alkyl arom. compd. (e.g. t-a...
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JPH08113575A |
To obtain the subject compound having a halogen atom at a meso position useful as a catalyst in the oxidation of a hydrocarbon to the hydroxyl- containing compound or a catalyst in the decomposition of a hydroperoxide by reacting a porph...
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JPH0832640B2 |
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JPH0830014B2 |
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