A procedure for the synthesis of tertiary amines via reductiveamination of aldehydes with molecular hydrogen as a reducing agent using homogeneous rhodium catalysis is presented. Using an amine to aldehyde ratio of 4/1 enabled the synthesis of tertiary amines from nine different aldehydes and nine different secondary amines with selectivities up to 99% and turnover frequencies (TOF) up to 7200 h−1
提出了一种使用均相铑催化通过分子氢作为还原剂对醛类进行还原胺化反应合成叔胺的方法。使用胺/醛比率为4/1时,可以由9种不同的醛和9种不同的仲胺合成叔胺,其选择性高达99%,周转频率(TOF)高达7200 h -1... 反应显示出对醇和酯功能的高耐受性,从而允许形成多功能分子。另外,仲胺也可以通过该合成来制备。对于所有化合物,活性都是通过吸收氢气来确定的。为了增加该过程的可持续性和效率,已经成功地制定了剂量策略。使用确定的反应指标,可以化学计量使用醛和胺,而不会显着降低选择性。
Isoprene hydroamination catalyzed by palladium xantphos complexes
Xantphos or Xantphos chalcogenide complexes with general folmula [PdCl2(X∩X)] (where X = P, O, S or Se) were synthesized by the addition of corresponding ligands to [PdCl2(COD)] (COD = 1,5-cyclooctadiene). Prepared Complexes [PdCl2(Xantphos)] and [PdCl2(Xantphos = S)] showed distorted square planar geometries, from X-ray crystallographic analysis. All of the prepared complexes showed activity toward intermolecular
[EN] CARBAZOLE COMPOUNDS AND METHODS OF USING SAME<br/>[FR] COMPOSÉS CARBAZOLE ET LEURS MÉTHODES D'UTILISATION
申请人:OBSCHESTVO S OGRANICHENNOY OTVETSTVENNOST YU PANACELA LABS
公开号:WO2015050471A1
公开(公告)日:2015-04-09
The invention relates to carbazole compounds of formula (I) that can be used for treating microbial infections, in particular, fungal infections, and selectively kill cancer cells.
Chemical compound, method for the production thereof and its use in catalyst systems for producing polyolefins
申请人:——
公开号:US20030013913A1
公开(公告)日:2003-01-16
The invention relates to a chemical compound of formula (I), wherein M
1
represents an element selected from main groups II, III or IV of the periodic table of elements; x is equal to 1, 2, 3 or 4; y is equal to 2, 3 or 4, and; A represents a cation of main group V of the periodic table of elements; R
1
is the same or different and represents a branched or unbranched linear or cyclic C
1
-C
40
group that contains carbon; R
2
is the same or different and represents a branched or unbranched linear or cyclic C
1
-C
40
group that contains carbon; R
3
represents a branched or unbranched linear or cyclic C
1
-C
40
group that contains carbon, and; R
4
represents a hydrogen atom; whereby R
2
and R
3
are always different from one another.
Aqueous ink composition for use in an ink-jet printer
申请人:SEIKO EPSON CORPORATION
公开号:EP0838508A2
公开(公告)日:1998-04-29
An aqueous ink composition for ink jet printers, which gives reliable printing performance and yields printed images which have excellent print quality and which dry rapidly is disclosed. The ink compositions are suitable for printing on plain paper. The ink comprises water as the principal solvent, an anionic colorant, pectic acid, a base, and at least one of a penetrable solvent and/or a penetrability-imparting surfactant. The pectic acid is composed primarily of α-1,4 linked polygalacturonic acid having a degree of esterification not more than 5% where the degree of esterification is defined as the percentage of the total number of galacturonic acid units in the pectic acid which are esterified.