The ~0F_ x, ~0F_c, ~1F_c and other structural parameters(x_p,L,x′,I) exhibit an excellent correlation to the acidity pK_a of 38 carboxylic acids.
基于Randic的碳原子支化度 (δi)提出非氢原子的酸性点价 (δai) ,由δai 建构分子树拓扑指数 (mF)及其分支指数 :树干指数 (mFc)、树叶指数 (mFx) ,用0 Fx、0 Fc、1Fc 及新提出的xp、L、x′、I等 12种结构参数与 38种羧酸化合物的酸性强度 (pKa)关联 ;用最佳变量子集算法拟合的最佳七元回归方程为 :pKa=11 4 0 933- 1 2 4 32 70 Fx- 0 6 172 30 Fc+0 0 970 0 1Fc- 0 982 0 0xp+1 2 8371L - 0 2 0 0 4 7x′ - 0 86 2 10I ,R =0 9871,S =0 16 8。
In this paper, the separation of six acidic compounds (cetirizine, naproxen, tropic acid, ibuprofen, ketoprofen and 2,2-biphenyl-cyclopropanecarboxylic acid) was studied on two chiral columns-trtis(3,5-dimethylpheny carbmate) (CDMPC) and (S,S)-Whelk-O1 chiral columns.
在自制的涂敷型纤维素三 (3,5 二甲基苯基氨基甲酸酯 ) (CDMPC)和Pirkle型 (S ,S) Whelk O1两种手性柱上 ,对 6种酸性化合物 (西替立嗪、外消旋萘普生、托品酸、布洛芬、酮洛芬以及 2 ,2 二苯环丙烷羧酸 )进行了对映体分离。
Synthesis and the Property Study of the Polycarboxylic Acids with Sulphur- and Nitrogen-containing Groups.;
含硫、含氮的多羧酸化合物的合成及性能研究
The Study on Solvent Effects of Aromatic Carboxylic Acid by Ftir Spectroscopy;
芳香族羧酸化合物溶剂效应的红外光谱研究
The Synthesis and Characterization of Flavone-6-carboxylic Acid Derivatives;
黄酮-6-羧酸类化合物的合成与表征
Synthesis and Electro-chemical Properties of TTF Carboxylates Coordination Compounds;
TTF羧酸配合物的合成与电化学性质
treat a chemical compound with carboxyl or carboxylic acid.
用羟基或羧基酸化合物进行处理。
Research on Development of Aromatic Carboxylic Coordination Compounds
芳香羧酸(苯基多羧酸)配合物研究进展
Research Advance of Flavonoids Carboxylic Acid Compounds and Their Rare Earth Complexes
黄酮羧酸类化合物及其稀土配合物的研究进展
The major components of acidic fraction are phenols and organic acids.
酸性组分主要由酚类化合物和有机羧酸组成.
Synthesis and Structural Chemistry of Bismuth Carboxylates and Antimony-oxygen Cluster Compounds;
铋羧酸盐及锑氧簇化合物的合成和结构化学
Studies on synthesis of α,β-unsaturated carboxylic acid from ally nitro compound
烯丙基硝基化合物合成α,β-不饱和羧酸的研究
Synthesis of Ethyl 5-Hydroxy-1H-Indole-3-Carboxylates;
5-羟基-1H-吲哚-3-羧酸乙酯类化合物的合成
The synthesis and characteristics of Cd(Ⅱ) with carboxylate and bis(imidazole) ligands
镉与羧酸及二咪唑化合物的合成及表征
STUDY ON KINETICS OF ADDITION-ESTERIFICATION REACTION BETWEEN CARBOXYLIC ACIDS AND EPOXIDES
羧酸和环氧化合物加成酯化反应动力学的研究
Studies on Design, Synthesis and Bioactivity of Purine Carboxylic Acid, Piperazine Carboxylic Acid, Ribavirin and Thiosemicarbazones;
嘌呤羧酸、哌嗪羧酸、三氮唑核苷和缩氨基硫脲类化合物的设计合成及生物活性研究
Studies on the Synthesis and Biological Activities of Phenoxy Carboxylic Acid and Isothiazolone Derivatives;
苯氧羧酸类和异噻唑啉酮类化合物的合成与生物活性研究
Carboxyl Reduction The carboxyl groups of all amino acids undergo organic reactions leading to the formation of amides, esters, and acid halides.
羧基还原所有氨基酸的羧基基团,都能进行有机反应,并可形成酰胺化合物,酯和卤化物。
STUDIES ON THE SPIROCOMPOUNDS: SYNTHESIS OF 10-METHYL SPIRO [4.5] DEC-6-EN-6-CARBOXYLIC ACID
沉香螺环化合物的研究:10-甲基-螺[4.5]-癸-6-烯-6-羧酸的合成
Syntheses, Structures and Performances of Transition-metal Supramolecular Compounds Constructed by Carboxylate or Sulfonate;
含羧基及磺酸基配体超分子化合物的设计合成、结构及性能研究