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- cross Aldol reaction 交叉羟醛缩合
- Abstract : An environment-friendly L-prolinamide catalyzed aldol reaction has been developed. 摘要 : 本文报道了一种环境友好的脯氨酰胺催化水相直接羟醛缩合反应。
- Proline is believed to catalyse the aldol reaction through a hydrogen-bonded intermediate. 人们普遍认为,脯氨酸通过形成单氢键相连接的中介物来催化醛醇缩合反应。
- Using solid acid as the catalyst, DMDBS ?? the nucleation agent for polypropylene synthesis was prepared by the aldol reaction of D-sorbitol with 3,4-Dimethyl benzaldehyde. 以D-山梨糖醇和3,4-二甲基苯甲醛为原料,在固体酸催化剂下进行醇醛缩合反应,合成了二(3,4-二甲基二苄叉)山梨糖醇(DMDBS),并对影响产品熔点和收率的因素进行了考察。
- Temperature rise could increase molecular average kinetic energy and quicken alcohol acid esterification, aldol reaction and aldehyde-aldehyde condensation. 实践表明,以适当的高温,利用陶坛贮酒可加快白酒老熟,缩短生产时间,提高设备利用率,增加经济效益。
- The advance of chiral phosphate-ester (phosphonate-ester) [phosphoramides (phosphonyl-amide)] in asymmetric alkylation reaction, Aldol reaction, hydrogenation reaction, cyanosilylation reaction was reviewed with 48 references. 讨论了手性膦(磷)酰胺及膦(磷)酯酯催化剂在不对称烷基化、不对称缩合、不对称氢化、不对称氰矽化等反应中应用的最新研究进展。参考文献48篇。
- asymmetric direct aldol reaction 不对称直接羟醛缩合
- Abstract : The first histidine catalyzed direct aldol reactions of ketones with nitrobenzaldehydes in water and in poly(ethylene glycol) (PEG) were reported. 摘要 : 本文首次报道了组氨酸在水中和聚乙二醇中催化酮和对硝基苯甲醛间的直接羟醛缩合反应。
- Keywords Aldol reaction;catalysis;asymmetric; 羟醛缩合反应;催化;不对称;
- direct asymmetric aldol reaction 直接不对称Aldol反应
- L-proline-catalyzed aldol reaction L-脯氨酸催化的羟醛缩合反应
- It is rash to cross the street without looking both ways. 不朝两边看看就穿马路是莽撞的。
- Cross and angry words in family grate upon the ear. 不高兴与生气的话在一个家庭里令人不愉快。
- Small Organic Molecules Catalyzed Asymmetric Aldol Reaction 有机小分子催化的不对称羟醛缩合反应
- A mule is a cross between a horse and an ass. 骡是马和驴交配而生的杂种。
- The Red Cross dealt out food to hungry soldiers. 红十字会把食物分发给饥饿的士兵。
- Aldol Reaction of Acetone on Alkaline Resin Catalysts 碱性树脂催化剂上丙酮的醇醛缩合反应
- This cross marks the spot where she died. 这个十字符号标明她死去的地点。
- He made expiation for our sins on the cross. 他在十字架上为我们赎了罪。
- Mind out for the traffic when you cross the road. 过马路要注意来往车辆。