搜索结果: 1-6 共查到“有机化学 13C”相关记录6条 . 查询时间(0.062 秒)
本发明涉及植物细胞培养技术，具体地说是一种利用葡萄悬浮培养细胞生产13C标记反式白藜芦醇的方法，将葡萄细胞置于液体培养基中培养，细胞接种量为50～200g/L湿重，在细胞接种时每升培养基中加入50～200g的无菌吸附剂；在细胞指数生长初期，于每升培养基中加入浓度分别为5～1000μM的单一诱导剂或诱导剂组合，同时添加浓度为1～10mM的13C标记前体；所述诱导剂为非生物诱导剂或真菌诱导子。本发明中...
钯催化Csp-Csp3偶联反应的13C NMR定量研究
13C NMR 钯催化Csp-Csp3偶联反应 反应机理 实时 定量
2009/10/28
利用NOE（Nuclear Overhauser Effect）增强的13C NMR方法对钯催化Csp-Csp3偶联反应过程进行实时、定量监测. 通过制作浓度曲线的方法定量分析了反应过程中各组分的浓度变化. 实验表明，同一物质各个共振峰的NOE增强倍数基本不变. 结果证实了几个主要反应物和产物的含量变化之间具有相关性，提示这些物质同属一个反应过程，为早期提出的反应机理（Zhao Y S, et ...
Investigation of the Cation Complexation by Macrocyclic Ethers using 13C NMR Spin--Lattice Dipolar Relaxation Time Measurements
Investigation the Cation Complexation Macrocyclic Ethers using 13C NMR Spin--Lattice Dipolar Relaxation
2010/4/19
The binding constants (Ka) of [18]crown-6 ether with Na+ , K+, and Ba2+ thiocyanates were determined by 13C{1H} NMR spin--lattice dipolar relaxation time measurements. The observed relaxation times (T...
Synthesis of 2-[2-(3,4,5-Trimethoxybenzoyloxy)ethyl]pyrrolidine Hydrochloride Controlled by GC-MS, 1H and 13C NMR Analyses
2-[2-(3,4,5-trimethoxybenzoyloxy)ethyl]pyrrolidine hydrochloride pyrrolidine derivatives O-acylation of amino alcohols removal of Cbz group
2010/4/19
The synthesis of 2-[2-(3,4,5-trimethoxybenzoyloxy)ethyl]pyrrolidine hydrochloride was performed using 2-(2-hydroxyethyl)pyrrolidine as a starting material. Before the O-acylation reaction with 3,4,5-t...
1H, 13C, 119Sn NMR, Mass, Mössbauer and Biological Studies of Tri-,Di- and Chlorodiorganotin(IV) Carboxylates
1H 13C 119Sn NMR Mass Mö ssbauer Biological Studies
2010/4/21
The reaction of 2-[(2,3-dimethylphenyl)amino]benzoic acid (HL) with tri- and diorganotin(IV) chlorides yielded complexes of the type R3SnL and R2SnL2 (R = n-C4H9, C6H5, C6H5CH2, n-C8H17). The compound...
13C-and 31P-NMR Study of Tetracarbonylbis(diphenylphosphino)alkanemetal(0) Complexes of The Group 6 Elements
Chromium Molybdenum Tungsten Carbonyl Diphosphine NMR
2010/6/29
Tetracarbonylbis(diphenylphosphino)alkanemetal(0) complexes of the general formula M(CO)4[(C6H5)2P (CH2)nP(C6H5)2] (M: Cr, Mo, W; n: 1, 2, 3) were synthesized from the reaction of M(CO)4(h2:2-1,5-cycl...