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醛亚胺

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The cis novel bisoxazoline ligands L1-L4 have been synthesized through the treatment of new cis dihydroxy diamide with p-toluenesulfonyl chloride in the presence of catalytic quantity of 4--pyridine, and the cis dihydroxy diamide could be achieved from the condensation of the amino alcohols and cis cyclopropane dicarbonyl chloride prepared via oxidation and halogenation from cis-2,2-dimethyl-3-formylcyclopropanecarboxylate with DCC.

我们以蒈醛酸内酯为起始原料,经过氧化反应、酰氯化反应得到顺式环丙烷二酰氯,然后在二环己基碳二亚胺的催化下与相应的氨基醇反应合成了顺式二羟基酰胺,再用对甲苯磺酰氯将羟基活化,最后在二甲氨基吡啶的催化下关环合成顺式双噁唑啉配体L1~L4。

Ni compounds are excellent catalysts for the reduction of nitroaromatics and SiO_2 is a commonly-utilized catalyst for imine formation.

镍类催化剂是硝基还原的优秀催化剂,SiO_2是亚胺合成的常用促进剂,因而Ni/SiO_2很有可能是从芳香族硝基化合物和醛一锅合成亚胺的优良多功能催化剂。

A series of 3-naphthyl-2--1,3-thiazolidin-4-ones were synthesized by the three-component one-pot cyclocondensation of naphthylamine, aromatic aldehyde and 2-mercaptoacetic acid using a microwave-assisted method in the presence of DMAP/DCC.

利用微波促进的多组分一锅法,在封管条件下,以萘胺、芳醛和巯基乙酸为原料,4-二甲氨基吡啶/N,N'-二环已基碳二亚胺为催化剂,合成了系列新的噻唑烷酮衍生物,该反应具有时间短、操作简便等优点。

It was found that the more easily systhesized and stable N, N-acetal or N, Ohemiacetal can replace N-tosyl imino ester to react with phenols in the presence of TiCl〓, and α-arylglycine derivatives were also obtained in high yields and high regioselectivity.

进一步研究发现,更易合成的N,N-或N,O-缩醛可以作为亚胺酯的替代物和酚类化合物发生傅克反应。路易酸TiCl〓能有效地促进酚类化合物和亚胺酯的傅克反应较高产率、较高区域选择性的得到2-羟基α-芳香甘氨酸衍生物。

In addition, ioding was found to be an efficient catalyst for the imino Diels-Alder reaction of N-arylimine and enol ethers and the reaction provided tertrahydroqinolines in good yields. One pot synthesis of tetrahydroqinolines from aldehyde, aniline and enol ethers was also achieved using iodine as the catalyst. The chemical yield of the"one pot"reaction was comparable with that obtained using preformed N-arylimine.

此外我们也发现碘能够有效地催化N-芳基亚胺与烯醇醚的Diels-Alder反应,以很高的化学收率得到了四氢喹啉衍生物,并且发现碘也能够直接催化芳香醛、苯胺、烯醇醚的三组分&一锅&反应,获得的化学产率与使用预制的N-芳基亚胺相当。

Company is a new comprehensive private chemical enterprise, covers an area of 560,000 square meters, with assets of 230 million yuan, mainly the production of urea, ammonium bicarbonate, melamine, compound fertilizer, methanol, Isocyanuric acid, liquid carbon dioxide, cyclohexylamine, cycloheximide, oxygen, bio-ching aldehyde chemical products, etc., business cover chemical production, warehousing logistics, agricultural operations, container manufacturing industry, the adoption and implementation of ISO9001 Quality System Certification, ISO14000 Environment System Certification and OHSAS18000 Occupational Health System Certification .

公司属新型综合性民营化工企业,占地面积56万平方米,拥有资产2.3亿元,主要生产尿素、碳酸氢铵、三聚氰胺、复合肥、甲醇、异氰脲酸、液体二氧化碳、环己胺、环己亚胺、氧气、生物清醛剂等化工产品,业务涵盖化工生产、仓储物流、农资经营、容器制造等行业,通过并实施ISO9001质量体系认证、ISO14000环境体系认证与OHSAS18000职业健康体系认证。

The details and results are summarized below:(1)An ABC style three component cascade reaction of aromatic aldehydes, aromatic amines and diethyl malonic ester or cyclohexanone has been developed.

论文从苯炔和亚胺出发,设计并系统研究了4种新的多组分串联反应,主要内容和结果如下:(1)发展了一种芳醛、芳胺和丙二酸二乙酯或环己酮的ABC型三组分串联反应。

In the third chapter, the synthesis of5-[(1"S)-1",2"-diacetyl-oxyethyl]-1-phenylpyrazol-3-carboxaldehyde oxime(2) from5-[(1"S)-1",2"-diacetyl-oxyethyl]-1-phenylpyrazol-3-carboxaldehyde(1) and phenyl-hydrazine were introduced firstly. The synthesis of nine dioxapyrrolino[3,4-c]pyrazoles containing chiral pyrazolyl moiety(6a-i) from 2 with N-substituted-phenylmaleimide by nonmetal oxidant IBD-initiated intermolecular 1,3-dipolarcycloaddition was described in detail.

第三章首先以5-[(1′S)-1′,2′-二乙酰氧基乙基]-1-苯基吡唑-3-醛(1)和苯肼为原料,合成了化合物5-(1′S)-1′,2′-二乙酰氧基乙基1-1-苯基吡唑-3-醛-苯腙(2);再用化合物(2)与N-取代苯基马来酰亚胺反应,利用无金属氧化剂—IBD引发1,3-偶极反应,发生分子间的环加成,合成了9种新型手性吡唑连二氧代吡咯啉并

Thirty-one new chiral phosphorus compounds have been synthesized starting from D-camphor,-alpha-phenylethylamine,-Betti base,-1-(4-nitrophenyl)-2-amino- propane-1,3-diol, L-amino acids (such as serine, phenylalanine, proline etc.) and their application as organocatalysts in asymmetric trimethylsilylcyanation of aldehydes and asymmetric borane reduction of prochiral ketones and ketimines were investigated.

该项目从D-樟脑、-alpha-苯乙胺、-Betti碱、-氯酶胺、L-氨基酸(如丝氨酸、苯丙氨酸、脯氨酸等)出发合成了31个新的手性磷化合物,研究了它们作为有机催化剂在醛的不对称硅氰化反应、潜手性酮的不对称硼烷还原反应以及亚胺的不对称硼烷还原反应中的催化效果。

In order to surmount the problem of slow reaction rate of the Baylis-Hillman reaction, we employed N-tosylated imines as the electronphile.

因为醛和环状烯酮的反应很难进行,我们便用活性更高的亲电试剂磺酰亚胺代替醛进行Baylis-Hillman反应,取得了很好的结果,反应速度得到了很大的提高。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

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