Supramolecular organization of calix[4]pyrrole with a methyl-trialkylammonium anion exchanger leads to remarkable reversal of selectivity for sulfate extraction vs. nitrate
Key Role of the Cation in the Crystallization of Chiral Tris(Anilato)Metalate Magnetic Anions
作者:Samia Benmansour、Patricia Gómez-Claramunt、Cristina Vallés-García、Guillermo Mínguez Espallargas、Carlos J. Gómez García
DOI:10.1021/acs.cgd.5b01573
日期:2016.1.6
(for X = NO2) or in the centrosymmetric (which is neither chiral nor polar) P1̅ space group for A+ = [PPh3Pr]+. These salts include the following: [PPh3Et]3[Fe(C6O4(NO2)2)3] (7), [PPh3Pr]3[MIII(C6O4X2)3] [M/X = Cr/Cl (8), Fe/Cl (9), Ga/Cl (10), Cr/Br (11), Ga/Br (12), and Fe/NO2 (13)], [PBu4]3[MIII(C6O4X2)3] [M/X = Cr/NO2 (14) and Fe/NO2 (15)], [NHep4]3[MIII(C6O4X2)3] [M/X = Cr/Cl (16), Cr/Br (17)]
完整研究了通常被认为是“无辜”的阳离子在手性三(芳基)金属酸盐磁性配合物的合成中所起的作用。这项研究基于合理合成为A + = [PPh 3 Et] +,[PPh 3 Pr] +,[PBu ]的A 3 [M III(C 6 O 4 X 2)3 ]化合物系列。4 ] +,[NHep 4 ] +和[PPh 4 ] +;M III =铬III,铁III和Ga III ; 和[C 6 O 4 X 2 ] 2–(X = Cl,Br和NO 2; [C 6 O 4 X 2 ] 2– = 2,5-二羟基-1的3,6-二取代衍生物的二价阴离子,4-苯醌,H 4 C 6 O 4)。我们展示并解释了阳离子在分离这些[M III(C 6 O 4 X 2)3 ] 3–阴离子与D 3的手性或非手性晶体中所发挥的出乎意料的关键作用点群对称。因此,在制备和表征的18种新化合物中,有6种是用阳离子[PPh 3 Et] +制成的,配制成[PPh
ESTERS OF O-SUBSTITUTED HYDROXY CARBOXYLIC ACIDS AND PREPARATIONS THEREOF
申请人:Deng Liu
公开号:US20120029198A1
公开(公告)日:2012-02-02
Esters of O-substituted hydroxy carboxylic acids are provided having Formula 1, or 2, or both Formulas 1 and 2:
wherein R and R
1
are independently selected from the group consisting of substituted and unsubstituted, branched- and straight-chain, saturated, unsaturated, and polyunsaturated C
1
-C
22
alkyl, substituted and unsubstituted C
3
-C
8
cycloalkyl, substituted and unsubstituted C
6
-C
20
carbocyclic aryl, and substituted and unsubstituted C
4
-C
20
heterocyclic; wherein the heteroatoms are selected from sulfur, nitrogen, and oxygen; and wherein n is 1-6. Process of producing esters of O-substituted hydroxy carboxylic acids are also provided.
Process for the preparation of an indole derivative
申请人:F. Hoffmann-La Roche AG
公开号:EP2011783A1
公开(公告)日:2009-01-07
A process for the preparation of indole derivatives of formula (I):
which are useful as intermediates in the preparation of i.a. pharmaceutically active compounds.
一种制备式(I)吲哚衍生物的方法:这些衍生物在制备具有药用活性的化合物中起中间体作用。
Process for producing allyl halide compound
申请人:——
公开号:US20020107422A1
公开(公告)日:2002-08-08
There are disclosed a composition comprising
(E)-1,4-dibromo-2-methyl-2-butene and
(Z)-1,4-dibromo-2-methyl-2-butene, wherein the ratio of the E isomer to the total amount of the E and Z isomers is 0.9 or more; a process for producing the same and a process using the same to produce an allyl halide compound of formula (1):
1
wherein X denotes a bromine atom,
Y denotes an ArS(O)
2
group or an RCOO group,
wherein Ar denotes an aryl group which may be substituted and R denotes a hydrogen atom, a lower alkyl group or an aryl group which may be substituted, and
the wavy line means that the derivative is a mixture of an E or Z geometrical isomer.
Infrared and Raman spectra of di-µ-halogeno-bis[dihalogenocadmate(<scp>II</scp>)] anions
作者:Peter L. Goggin、Robin J. Goodfellow、Katerina Kessler
DOI:10.1039/dt9770001914
日期:——
longer n-alkyl; X = Cl, Br, or I) are shown by i.r. and Raman spectroscopy to contain the halide-bridged dimeric anions [Cd2X6]2– both in the solid state and when dissolved in non-complexing solvents. Recent conclusions on the nature of the mixed-halide systems [NPrn4]x[(CdX2Y)x] are shown to be questionable. Previous assignments for the anions [CdX4]2– have been augmented from studies on [NR4]2[CdX4]
盐[NR 4 ] x [(CdX 3)x ](R = Pr n或更长的正烷基; X = Cl,Br或I)通过ir和拉曼光谱法显示含有卤化物桥联的二聚阴离子[ Cd 2 X 6 ] 2 –呈固态,也可溶于非复杂溶剂中。关于混合卤化物体系[NPr n 4 ] x [(CdX 2 Y)x ]的性质的最新结论表明是可疑的。阴离子[CdX 4 ] 2–的先前分配已从对[NR 4 ]的研究中扩充2 [CdX 4 ]。