Patents in Class 568/651

Matches 1 - 50 out of 85

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Match	Document	Document Title
1	7358402	Reduced coenzyme Q10 crystal with excellent stability and composition containing said reduced coenzyme Q10 crystal The present invention provides a reduced coenzyme Q 10 crystal with excellent stability and a composition containing said reduced coenzyme Q 10 crystals. According to the present invention,...
2	7230141	Method for producing toluol derivatives A process for preparing toluene derivatives of the formula I, where R 1 , R 2 and R 3 independently of one another are hydrogen, halogen, C 1 –C 6 -alkyl, hydroxyl or C 1 –C 6 -alkoxy, by...
3	6989467	Microwave induced process for the preparation of substituted 4-vinylphenols The present invention relates to “a microwave induced process for the preparation of 4-vinylphenols or its derivatives” in which commercially important FEMA GRAS approved perfumery and...
4	6881868	Process for the preparation of (R)-2-alkyl-3-phenyl-1-propanols Compounds of formula (I), wherein R 1 and R 2 are, independently of one another, H,C 1 -C 6 alkyl, C 1 -C 6 halogenalkyl, C 1 -C 6 alkoxyl, C 1 -C 6 alkoxy-C 1 -C 6 alkyl, or C 1 -C 6 alkoxy-C 1...
5	6852895	Practical, cost-effective synthesis of CoQ10 The present invention provides a convergent method for the synthesis of ubiquinones and ubiquinone analogues. Also provided are precursors of ubiquinones and their analogues that are useful in the...
6	6828466	Process for the synthesis of phenols from arenes A process to synthesize substituted phenols such as those of the general formula RR′R″Ar(OH) wherein R, R′, and R″ are each independently hydrogen or any group which does not interfere in...
7	6541673	Process for oxyalkylating phenolic compounds Phenolic polyether polyols are prepared by a two stage oxyalkylation process, a first stage performed at a high oxyalkylation temperature and a second stage at a lower oxyalkylation temperature....
8	6512147	Apparatus and process for generating mixed multi-component vapor A mixed liquid of two or more components different in boiling temperature from each other and soluble in or compatible with each other is evaporated into a mixed vapor having a similar composition...
9	6274635	Alkylated resorcinol derivatives for the treatment of immune diseases The present invention provides a method, compounds, and compositions for treating a disease associated with immune dysfunction. In accordance with the method, a pharmacologically-acceptable...
10	6271423	Preparation of butenyl ethers A process for preparing butenyl ethers of the formula I CH 3 --CHCH--CH 2 --OR I by reacting butadiene or butadiene-containing hydrocarbon streams with alcohols of the formula II ROH II...
11	6013841	Method for the conversion of 3- and 4-methylcatechol to benzaldehyde The 3- and 4-methylcatechols are converted to the corresponding benzaldehyde by first alkylating the hydroxyl groups to form an alkylated methylcatechol. The methyl group is then converted to a...
12	5977416	Dehydration catalyst and process for producing a monoalkylether of a dihydric phenolic compound using same A dehydration catalyst useful for producing a monoalkylether of dihydric phenolic compound by a dehydration reaction of a dihydric phenolic compound with a lower alkyl alcohol with a high...
13	5936102	Process for the preparation of 2,2,3,3-tetrafluoro-1,4-benzodioxanes, novel o-(2-bromo-1,1,2,2-tetrafluoroethoxy)-phenols, and novel 2-bromo-1,1,2,2-tetrafluoroethoxy-containing phenyl ethers The present invention is drawn to a process for preparing a 2,2,3,3-tetrafluoro-1,4-benzodioxane, by cyclocondensing a o-(2-bromo-tetrafluoroethoxy)-phenol in the presence of an acid binder.
14	RE36139	Hydroquinone derivative Novel hydroquinone derivatives of the formulae (I) and (II), ##STR1## wherein R 1 is an alkyl group having 7 to 11 carbon atoms, ##STR2## wherein each of R 2 to R 5 is independently a hydrogen...
15	5840997	Method for the production of alkoxy- and aryloxy-phenols Alkoxybenzaldehydes and aryloxybenzaldehydes are converted to the corresponding phenols by reacting the benzaldehydes in an organic solvent phase with formic acid and hydrogen peroxide in an...
16	5536882	Preparation of polyether glycols and alcohols by the polymerization 3,4-epoxy-1-butene Disclosed are novel polyether compounds obtained by the reaction or polymerization of 3,4-epoxy-1-butene in the presence of an acidic catalyst and a nucleophilic initiator compound. The polyether...
17	5446186	Structure and synthesis of nitrophenyl-EGTA, a caged calcium, intermediates thereof and a method of producing a high photochemical yield of liberated calcium The synthesis and compound of a new caged calcium which is an ortho-nitrophenyl derivative of EGTA and various intermediates. It is synthesized in ten steps and 24% overall yield. The...
18	5393776	Tocotrienol analogs in the treatment of hypercholesterolemia and hyperlipidemia This invention relates to structurally novel acyclic tocotrienol analogs, which are useful for cholesterol/lipid lowering in cases of hypercholesterolemia and hyperlipidemia, and for...
19	5248835	Method of producing a monoalkylether of a dihydric phenol compound A monoalkylether of a dihydric phenol compound is produced at a high conversion and selectivity by catalytically dehydration reacting a dihydric phenol compound with a lower monohydric alcohol in...
20	5206396	Telomerization of 1,3-butadiene Octyl ethers and octadienyl ethers of glucose, sucrose, bisphenol A, 4-substituted-2,2,6,6-tetramethylpiperidines are disclosed. Compositions comprised of a mixture of octyl ethers of glucose and...
21	5198571	Monofunctionalization of phenolic hydroxy onto a polyphenol A region-specific monofunctionalization of a phenolic hydroxy onto a polyphenol for the preparation of a compound of the formula ##STR1## wherein R is selected from the group consisting of...
22	5146010	Pyrolysis of naturally occurring cresylic acid mixtures A process for removing guaiacols from naturally-occurring cresylic acid mixtures by pyrolysis is described.
23	5097078	Catalytic hydroxylation of phenols/phenol ethers The phenols and phenol ethers are hydroxylated by reacting such phenols/phenol ethers with hydrogen peroxide, in the presence of (a) a catalytically effective amount of an alkali metal or alkaline...
24	5082978	Selective monomethylation of phenolic compounds Mono-, di- and triphenols are selectively monomethylated by reaction with para-dimethoxybenzene in the presence of a catalytically effective amount of an acid catalyst.
25	5043494	Preparation of methylhydroquinone Methylhydroquinone (MeHQ) or methyl ether derivative thereof is prepared by contacting paramethoxyphenol or para-dimethoxybenzene with an acid catalyst, preferably a solid acid catalyst, at a...
26	4954659	1,4-bis (dihydroxyphenyl) butane and analogs A grignard synthesis of pharmacologically active 1,4-bis(dihydroxyphenyl)butane and analogs, as well as novel intermediates, is provided, comprising preparing a grignard reagent preferably, a...
27	4946865	Dipropargyloxybenzene compounds and their production A compound of the formula: ##STR1## wherein X is a hydrogen atom, a halogen atom, a C 1 -C 3 alkyl group or a C 1 -C 3 alkoxy group and Y is a hydrogen atom, a halogen atom, a cyano group, a...
28	4897420	Benzoquinone derivatives, their production and use Compounds of the formula: ##STR1## wherein l is an integer of 0 to 18, X is hydrogen, an alkyl having 1 to 4 carbon atoms or a carboxylic acyl having 2 to 4 carbon atoms and Y is a phenylene, a...
29	4885403	Process for making propargyl ethers of bisphenols A process for preparing an aromatic propargyl ether, preferably bispropargyl ether, from phenolic compounds comprising vigorously stirring a propargyl halide, preferably propargyl chloride, with a...
30	4825011	Method of preparing substituted dihydroxy-benzenes The nuclear hydroxylation of substituted phenols is performed by using aqueous hydrogen peroxide in the presence of sulfur dioxide or selenium dioxide as catalyst in a simple manner with very good...
31	4610996	Fungicidal phenoxytriazolyl ketones and carbinols Phenoxytriazolyl ketones and carbinols of the formula ##STR1## in which A represents the keto group or the CH(OH) grouping and R represents hydrogen, alkenyl, alkinyl, halogenoalkyl,...
32	4588835	Process for preparing alkoxyphenols A process for preparing an alkoxyphenol represented by the formula: ##STR1## wherein R is hydrogen, alkyl having 1 to 4 carbon atoms, formyl, hydroxymethyl, alkoxymethyl, dialkoxymethyl,...
33	4582919	Process for the manufacture of optically active compounds There is described a novel process for producing hydroquinone derivatives of the formula ##STR1## wherein R is an ether protecting group, and their conversion into d-α-tocopherol, starting from...
34	4559177	Quinone derivatives A compound of the formula: ##STR1## wherein m is an integer of 11 to 22; R 1 is alkyl having 1 to 4 carbon atoms; R 2 is hydrogen, alkyl having 1 to 4 carbon atoms or carboxylic acyl having 1 to...
35	4504685	Oxyalkylation process Hydroxyl compounds are oxyalkylated by contacting them with an alkylene oxide, such as ethylene oxide or propylene oxide, in the presence of a perfluorocarbon polymer containing pendant sulfonic...
36	4496771	Process for preparing the compound 1-decyloxy-4-[(7-oxa-4-octynyl)-oxy]-benzene There is described a process for preparing the compound 1-decyloxy-4-[(7-oxa-4-octynyl)-oxy]-benzene consisting in condensing methyl-propargyl-ether with 1-bromo-3-chloro-propane and in reacting...
37	4495104	Quinone carboxylic acids and ester derivatives A compound of the general formula ##STR1## wherein n is an integer of 10 to 21, inclusive; R is H or lower alkyl having 1 to 4 carbon atoms has pharmaceutical activities such as hypotensive, tissue...
38	4473713	Hydrolysis of aryl-aliphatic ethers At least one of the other functions comprising an aryl-aliphatic ether, e.g., veratrol, is catalytically hydrolyzed with water, e.g., to guaiacol, in the presence of a catalytically effective...
39	4435601	Preparation of polyphenols by oxidation of hydroxybenzaldehydes Optionally aldehyde substituted polyphenols are prepared by oxidizing, with hydrogen peroxide, a hydroxybenzaldehyde bearing at least one aldehyde substituent ortho- and/or para- to the nuclear...
40	4390733	Process for preparing the mono-methallyl ether of pyrocatechin The mono-methallyl ether of pyrocatechin of formula (I): ##STR1## is prepared by reacting pyrocatechin of formula (II): ##STR2## with a methallyl halide of formula (III): ##STR3## in a homogeneous...
41	4336382	1,4-Disubstituted piperazine compounds There are disclosed compounds of the formula ##STR1## wherein R 1 is selected from the group consisting of lower alkyl; R 8 is selected from the group consisting of --O--(CH 2 ) n --wherein n is...
42	4314086	Preparation of aliphatic/aromatic ethers Aliphatic/aromatic ethers are prepared by reacting an aliphatic halide with either an alkali or alkaline earth metal, or ammonium phenolate or naphtholate, in an inert organic solvent, and in the...
43	4307253	Process for the preparation of alkyl aryl ethers Procecss for the preparation of alkyl aryl ethers by reacting phenols with aliphatic ethers in the presence of strongly acid cation exchangers.
44	4294991	Process for monoalkylation of dihydric phenols A process for the preparation of a monoalkyl ether having the formula ##STR1## wherein R is an alkyl radical having 1 to 18 carbon atoms or C 2 H 5 --O--CH 2 CH 2 -- and R 1 is hydrogen or an...
45	4283565	Process for preparing benzylalcohols There is described an essentially two step process for the preparation of benzylalcohols including those benzylalcohols having substituents on the benzyene ring by reaction of a substituted or...
46	4252985	Process for the preparation of o-methallyloxyphenol by the selective monoetherification of pyrocatechol The process relates to the preparation of o-methallyloxyphenol by the action of methallyl chloride on pyrocatechol in the presence of a basic agent. It consists in carrying out the reaction in a...
47	4247710	Intermediate in the production of adrenergic blocking agents There are disclosed compounds of the formula ##STR1## wherein R 1 is selected from the group consisting of lower alkyl; R 8 is selected from the group consisting of --O--(CH 2 ) n --wherein n is...
48	4226800	Synthesis of acetylene-terminated compounds Phenolic materials containing propargyl groups are prepared by reacting a polyhydric, phenolic material with propargyl bromide, the reaction being conducted in an aqueous sodium hydroxide solution....
49	4192949	Preparation of aralkyl phenyl ethers and alkyl phenyl ethers Phenol ethers are prepared by reacting phenols with dialkyl carbonates in the presence of tertiary amines and/or phosphines. The aralkyl aryl ethers and alkyl aryl ethers obtained are starting...
50	4163864	Process for preparing 2-methyl-3-prenyl-4,5,6-trimethoxyphenol 2-METHYL-3-PRENYL-4,5,6-TRIMETHOXYPHENOL OF THE FORMULA: ##STR1## wherein R represents a group of the formula: ##STR2## WHEREIN N IS AN INTEGER OF 0 TO 9 AND A and B represent hydrogen atom or A--B...

Matches 1 - 50 out of 85

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