1) Hydroxybenzaldehyde

间羟基苯甲醛
1.
The synthesis of 3-hydroxybenzaldehyde from 1,3-cresol with oxidizing agent;

间甲酚直接氧化合成间羟基苯甲醛
2) mhydroxylbenzaldehyde

间羟基苯甲醛
1.
A new method of mhydroxylbenzaldehyde preparation was developed with mcresol in indirect electrochemical oxidation with high yield and purit
研究了以间甲酚为主要原料,经醚化反应,间接电化学氧化反应和醚键断裂反应三步合成间羟基苯甲醛的新方法。
3) hydroxybenzaldehyde

羟基苯甲醛
1.
The nucleophilic substitution reaction of chloromethylated polystyrene was performed using the sodium salt of p-hydroxybenzaldehyde as the nucleophilic substitution agent via phase-transfer catalysis,and polystyrene with aldehyde groups on its side chains was prepared.
以对羟基苯甲醛的钠盐为亲核取代试剂,采用相转移催化进行了大分子氯甲基聚苯乙烯的亲核取代反应,将其转变为侧链带有功能性基团醛基的聚苯乙烯;考察了反应条件(如有机溶剂的极性、催化剂种类及用量、有机相与水相之比等)对大分子相转移催化反应的影响,并根据相转移催化反应机理与相关的动力学规律进行了分析。
2.
Although good selectivity for p-hydroxybenzaldehyde has been achieved, the use of methanol as the solvent brings an explosion risk in operation and a large amount of NaOH in the solvent has to be neutralized, which are the main disadvantages.
在乙酸存在和空气气氛下,以磷酸铁为催化剂进行了对甲酚气相选择氧化生成对羟基苯甲醛和对羟基苯甲醇的反应。
3.
This paper summarizes the recent development in synthesis of hydroxybenzaldehyde,and points out that hydroxybenzaldehyde by catalytic oxidation,chlorination-hydrolysis and indirect electrooxidation from cresol are three promising approaches.
羟基苯甲醛是一类十分重要的精细化学品。
4) p-hydroxybenzaldehyde

对羟基苯甲醛
1.
Water-soluble Fe~(3+) ion chemosensor based on p-hydroxybenzaldehyde;

基于对羟基苯甲醛的水溶性Fe~(3+)离子探针的研究
2.
Studies on solid-state synthesis of a Schiff base derived from p-hydroxybenzaldehyde and p-aminobenzoic acid at supersonic speed airflow and low-heating temperature;
超音速气流低热固相反应合成对羟基苯甲醛缩对氨基苯甲酸Schiff碱
3.
The production of gastrodin through biotransformation of p-hydroxybenzaldehyde by cell suspension culture of Datura stramonium;
白花曼陀罗悬浮培养细胞转化对羟基苯甲醛生成天麻素
5) 3,4-dihydroxy benzaldehyde

3,4-二羟基苯甲醛
1.
Synthesis of 3,4-dihydroxybenzaldehyde by air-catalytic oxidation;

空气催化氧化合成3,4-二羟基苯甲醛
2.
Methods Starting from 3,4-dihydroxybenzaldehyde,dl-tanshinol was synthesized by benzyl protection,Dazens reaction,Lewis acid selective ring opening,NaBH4 reduction,hydrolysis and hydrogenation.
方法以3,4-二羟基苯甲醛为起始原料,经过苄基保护、Darzens反应、Lewis酸选择性开环、NaBH4还原、水解、氢化6步反应得到丹参素。
6) 4-Hydroxybenzaldehyde

4-羟基苯甲醛
1.
β-cyclodextrin catalyst synthesis of 4-hydroxybenzaldehyde;

β-环糊精催化合成4-羟基苯甲醛
2.
Solid-liquid equilibrium for a ternary system of 4-hydroxybenzaldehyde and its bromoderivatives;
4-羟基苯甲醛及其溴代物三元固液平衡
3.
The oxidation process for synthesizing 4-Hydroxybenzaldehyde in a liquid jet loop reactor(LJLR)with a diameter of 349mm(ID) was studied, the consumption of the catalyst and alkali, reaction time and temperature were optimized, and the effects of different operations on the reaction were investigated under the optimum conditions.
在直径349毫米液体喷射环流反应器(LJLR)中对4-羟基苯甲醛合成的氧化过程进行了研究。
补充资料:间羟基苯甲醛
分子式:C7H6O2
分子量:122.12
CAS号:100-83-4
性质:无色或淡黄色结晶状固体。熔点103-104℃,沸点240℃,191℃(6.7kPa)。微溶于水,溶于热水、乙醇、丙酮、乙醚和苯。能升华,不能进行水蒸气蒸馏。
制备方法:以间硝基苯甲醛为原料,可有两种制取间羟基苯甲醛的方法。1.由间硝基甲醛经加成、还原、重氮化、水解而得。将亚硫酸氢钠溶解于水中,加间硝基苯甲醛,于50℃搅拌溶解,得加成物。加成物在碳酸钙存在,与硫酸亚铁加热回流3h,还原为氨基物。将还原液冷至15℃以下,滴加亚硝酸钠溶液重氮化,再于100-110℃水解,即得间羟基苯甲醛。经活性炭脱色、用水重结晶,即得成品。2.由间硝基苯甲醛经氯化亚锡还原,再经重氮化、水解而得。将粉末状二水合氯化亚锡与盐酸配成溶液,冷至5℃,加入间硝基苯甲醛。慢慢升温至25-30℃后,温度迅速上升,当升到100℃时,冷却,剧烈搅拌,得橙色糊状物。加浓盐酸形成悬浮液,搅拌下慢慢加入亚硝酸钠水溶液,温度控制在4-5℃。加完后,搅拌1h。冷却结晶,滤出重氮盐,加到沸水中水解,并用活性炭脱色。趁热过滤,冷却结晶得到成品。
用途:间羟基苯甲醛用作医药、染料、杀菌剂、照相乳化剂等精细化学品的中间体。
分子量:122.12
CAS号:100-83-4
性质:无色或淡黄色结晶状固体。熔点103-104℃,沸点240℃,191℃(6.7kPa)。微溶于水,溶于热水、乙醇、丙酮、乙醚和苯。能升华,不能进行水蒸气蒸馏。
制备方法:以间硝基苯甲醛为原料,可有两种制取间羟基苯甲醛的方法。1.由间硝基甲醛经加成、还原、重氮化、水解而得。将亚硫酸氢钠溶解于水中,加间硝基苯甲醛,于50℃搅拌溶解,得加成物。加成物在碳酸钙存在,与硫酸亚铁加热回流3h,还原为氨基物。将还原液冷至15℃以下,滴加亚硝酸钠溶液重氮化,再于100-110℃水解,即得间羟基苯甲醛。经活性炭脱色、用水重结晶,即得成品。2.由间硝基苯甲醛经氯化亚锡还原,再经重氮化、水解而得。将粉末状二水合氯化亚锡与盐酸配成溶液,冷至5℃,加入间硝基苯甲醛。慢慢升温至25-30℃后,温度迅速上升,当升到100℃时,冷却,剧烈搅拌,得橙色糊状物。加浓盐酸形成悬浮液,搅拌下慢慢加入亚硝酸钠水溶液,温度控制在4-5℃。加完后,搅拌1h。冷却结晶,滤出重氮盐,加到沸水中水解,并用活性炭脱色。趁热过滤,冷却结晶得到成品。
用途:间羟基苯甲醛用作医药、染料、杀菌剂、照相乳化剂等精细化学品的中间体。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条