CAS: 2896-60-8; 4-Ethylbenzene-1,3-Diol

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CAS号89-84-9 2',4'-二羟基苯乙酮 | CAS号100-41-4 乙苯 | CAS号106209-27-2 4-ethenyl-1,3-b... | CAS号108-46-3 间苯二酚 | CAS号54337-59-6 1-(3-乙基-2,6-二羟基... | CAS号60965-25-5 1-(5-bromo-2,4-... | CAS号6626-15-9 4-溴间苯二酚 | CAS号7647-01-0 盐酸 | CAS号5330-85-8 2-butoxy-1-(2,4... | CAS号2163-12-4 1,1'-(2,4-二羟基-1... | CAS号111052-45-0 6-ethyl-7-hydro... | CAS号108904-80-9 6-ethyl-7-metho... | CAS号105258-37-5 6-乙基-7-羟基-3-苯基-... | CAS号105258-08-0 6-ethyl-7-metho... | CAS号140660-12-4 6-(4-acetyl-2-e... | CAS号19672-03-8 4-Ethylresorcin... | CAS号19345-81-4 6-ethyl-7-hydro... | CAS号159647-53-7 2-(1,3-苯并二氧代l-5... | CAS号37470-83-0 5-乙基-2,4-二羟基苯甲醛 | CAS号1484-73-7 6-乙基-7-羟基-4-甲基-...

2,4-二羟基苯乙酮置于palladium On Barium Sulfate 氢气体系中,用 甲醇 用作溶剂,化学反应生成4-乙基间苯二酚
参考文献:从间苯二酚系列中还原 β-苯甲酰基丙酸
标题:从间苯二酚系列中还原 β-苯甲酰基丙酸
摘要:与其两种半醚和许多其他琥珀酰苯酚相比,2,4-二羟基-苯甲酰丙酸(琥珀酰间苯二酚)不能通过催化或用 Nabh4 还原到羟基酸的水平.原因进行了讨论.铅阴极上琥珀酰苯酚的电解还原不仅产生 γ-芳基-γ-羟基丁酸,而且产生它们的频哪醇样二聚体,它们通过质子催化内酯化.4-甲氧基苯基丁内酯可以用 Bbr3 去甲基化.该反应不适用于 4-甲氧基-2-羟基苯基-丁内酯.
Doi:10.1002/ardp.19662990614

专利信息

专利号:US-4895922-A
优先权日:1988-05-05
标 题 :Low temperature synthesis of polyesteramides
发明人：OGATA NAOYA
权利人:GOODYEAR TIRE & RUBBER
摘要:This invention disclosed a process for the synthesis of polyesteramides. By utilizing the phosphorus containing catalyst systems of the present invention, such polyesteramides can be synthesized at relatively low temperatures. The present invention specifically discloses a process for the synthesis of a polyesteramide which comprises polymerizing at least one diamine, at least one diol, and at least one dicarboxylic acid in the presence of (1) at least one acid acceptor; (2) at least one halogenated organic compound; and (3) at least one phosphorus containing compound selected from the group consisting of (a) triphenylphosphine, (b) triphenylphosphine oxide, (c) triphenylphosphine sulfide, (d) polymeric agents having pendant diphenylphosphine groups, (e) silicon-phosphorus compositions which contain at least one divalent oxygen atom which is bonded directly to a tetravalent silicon atom and a trivalent or pentavalent phosphorus atom; (f) compounds with the structural formula (C 6 H 5 ) 3 P=N-R, wherein R is a hydrogen atom or an alkyl group containing from 1 to 10 carbon atoms; and (g) compounds with the structural formula (C 6 H 5 )PR 1 R 2 wherein R 1 and R 2 can be the same or different, wherein R 1 is selected from the group consisting of alkyl groups containing from 1 to 10 carbon atoms and phenyl groups, and wherein R 2 is an alkyl group containing from 1 to 10 carbon atoms.

专利号:US-4923839-A
优先权日:1987-02-05
标题:Low temperature synthesis of condensation polymers
发明人：OGATA NAOYA
权利人:GOODYEAR TIRE & RUBBER
摘要:Condensation polymers of high molecular weight, such as polyesters, polyureas, and polyamides, are usually prepared at temperatures of 200° C. or greater. However, by utilizing the catalyst systems of the present invention, condensation polymers can be synthesized at much lower temperatures. The polycondensation catalyst systems of the present invention are particularly useful for synthesizing aliphatic polyesters, such as polyethylene terephthalate, from dicarboxylic acids and aliphatic glycols. The present invention more specifically discloses a process for the synthesis of an aliphatic polyester comprising polymerizing at least one dicarboxylic acid with at least one aliphatic glycol in the presence of (1) at least one phosphorus containing compound which contains at least one trivalent or pentavalent phosphorus atom which is bonded directly to at least one phenyl group, (2) an acid acceptor, and (3) at least one halogenated organic compound. It is preferred to utilize a polymeric agent having bound acid acceptor groups as the acid acceptor in the process of the present invention.

专利号:US-4843053-A
优先权日:1987-02-05
标 题 :Low temperature synthesis of condensation polymers
发明人：OGATA NAOYA
权利人:GOODYEAR TIRE & RUBBER
摘要:Condensation polymers of high molecular weight, such as polyesters, polyureas, and polyamides, are usually prepared at temperatures of 200° C. or greater. However, by utilizing the catalyst systems of the present invention, condensation polymers can be synthesized at much lower temperatures. The polycondensation catalyst systems of the present invention are particularly useful for synthesizing aliphatic polyesters, such as polyethylene terephthalate, from dicarboxylic acids and aliphatic glycols. The present invention more specifically discloses a process for the synthesis of an aliphatic polyester comprising polymerizing at least one dicarboxylic acid with at least one aliphatic glycol in the presence of (1) at least one phosphorus containing compound which contains at least one trivalent or pentavalent phosphorus atom which is bonded directly to at least one phenyl group, (2) an acid acceptor, and (3) at least one halogenated organic compound. It is preferred to utilize a polymeric agent having bound acid acceptor groups as the acid acceptor in the process of the present invention.

专利号:US-4996178-A
优先权日:1987-02-05
标题 :Low temperature synthesis of condensation polymers
发明人：OGATA NAOYA
权利人:GOODYEAR TIRE & RUBBER
摘要:Condensation polymers of high molecular weight, such as polyesters, polyureas, and polyamides, are usually prepared at temperatures of 200° C. or greater. However, by utilizing the catalyst systems of the present invention, condensation polymers can be synthesized at much lower temperatures. The polycondensation catalyst systems of the present invention are particularly useful for synthesizing aliphatic polyesters, such as polyethylene terephthalate, from dicarboxylic acids and aliphatic glycols. The present invention more specifically discloses a process for the synthesis of an aliphatic polyester comprising polymerizing at least one dicarboxylic acid with at least one aliphatic glycol in the presence of (1) at least one phosphorus containing compound which contains at least one trivalent or pentavalent phosphorus atom which is bonded directly to at least one phenyl group, (2) an acid acceptor, and (3) at least one halogenated organic compound. It is preferred to utilize a polymeric agent having bound acid acceptor groups as the acid acceptor in the process of the present invention.

专利号:US-2006129002-A1
优先权日:2004-12-15
标 题:Process for the synthesis of alkylresorcinols
发明人：WASSMANN-WILKEN SUZANNE; SCHMIDT HANS-JURGEN; WILKEN JORG; KANSCHIK-CONRADSEN ANDREAS
权利人:HONEYWELL INT INC
摘要:The invention provides a process for the production of 4-(C 2 -C 16 )alkylresorcinol. 4-(C 2 -C 16 )alkylresorcinol is produced by reacting resorcinol with a (C 2 -C 16 )alkyloic acid in the presence of a zinc chloride catalyst to produce an intermediate comprising a 4-(C 2 -C 16 )acylresorcinol and zinc ions. Then the intermediate is adjusted such that the zinc ion content is from about 0.1 to about 150 parts per million based on the weight of the intermediate to form an adjusted intermediate. Then the produced 4-(C 2 -C 16 )acylresorcinol is hydrogenated in the presence of the zinc ions and a base metal hydrogenation catalyst to produce a crude product comprising 4-(C 2 -C 16 )alkylresorcinol, which may thereafter be isolated.

专利号:US-4804730-A
优先权日:1987-02-05
标 题 :Process for producing an aliphatic polyester by polymerizing dicarboxylic acid and glycol in the presence of phosphorus or silicon-phosphorus compound acid acceptor and halogenated organic compound
发明人：OGATA NAOYA
权利人:GOODYEAR TIRE & RUBBER
摘要:Condensation polymers of high molecular weight, such as polyesters, polyureas, and polyamides, are usually prepared at temperatures of 200° C. or greater. However, by utilizing the catalyst systems of the present invention, condensation polymers can be synthesized at much lower temperatures. The polycondensation catalyst systems of the present invention are particularly useful for synthesizing aliphatic polyesters, such as polyethylene terephthalate, from dicarboxylic acids and aliphatic glycols. The present invention more specifically discloses a process for the synthesis of an aliphatic polyester comprising polymerizing at least one dicarboxylic acid with at least one aliphatic glycol in the presence of (1) at least one phosphorus containing compound which contains at least one trivalent or pentavalent phosphorus atom which is bonded directly to at least one phenyl group, (2) an acid acceptor, and (3) at least one halogenated oganic compound. It is preferred to utilize a polymeric agent having bound acid acceptor groups as the acid acceptor in the process of the present invention.