Taking advantage of the steric effect of nitrogen atoms in 2-methylpiperazine, selective monobenzoylate on the nitrogen atoms were investigated by five synthetic routes.
根据2-甲基哌嗪中N原子位阻效应的差异,研究了其选择性单酰化反应。
Preparation of Chiral 2-Methylpiperazine;
手性2-甲基哌嗪的制备
The continuous synthesis of 2-methylpiperazine was studied,using the self-prepared N-(β-hydroxy -propyl)-ethylenediamine as the starting material.
制备了一系列的铜基和镍基催化剂,用于以N-β-羟丙基乙二胺为原料的2-甲基哌嗪的连续化合成反应,经筛选得到了Cu-Cr-Fe/γAl_2O_3催化剂[w(Cu)=20%,w(Cr)=1 0%,w(Fe)=5%]。
Volumetric properties of binary mixtures of N-methylpiperazine with alcohols.;
醇+N-甲基哌嗪二元体系的体积性质
Synthesis of N-methylpiperazine over CuO-NiO/Al_2O_3 Catalysts
CuO-NiO/Al_20_2催化剂上N-甲基哌嗪合成研究
Synthesis of 2, 5-dimethylpiperazine;
2，5-二甲基哌嗪合成工艺的研究
Study on the New Synthesis Technology of 2, 6-dimethypiperazine;
2，6-二甲基哌嗪合成新工艺研究
Study On the Synthesis of CIS-2, 6-Dimethylpiperazine;
顺式-2,6-二甲基哌嗪合成工艺研究
Synthesis of N-methylpiperazine over CuO-NiO/Al_2O_3 Catalysts
CuO-NiO/Al_20_2催化剂上N-甲基哌嗪合成研究
SELECTION AND CHARACTERIZATION OF THE CATALYSTS FOR SYNTHESIS OF 2-METHYLPIPERAZINE
2-甲基哌嗪合成催化剂的筛选与表征
Study on the Synthesis of N-Methylpiperazine from Diethanolamine and Methylamine
二乙醇胺和甲胺制备N-甲基哌嗪的研究
Protective Effect of Tetramethylpyrazine Diphenylmethyl Piperazidine on Endothelial Cell Damage Induced by Hydrogen Peroxide;
川芎嗪二苯甲基哌嗪对氧化损伤血管内皮细胞的保护作用研究
Synthesis of Chiral Diphenylmethylpiperazine Compounds and Their Activities in Antiallergy;
手性二苯甲基哌嗪类化合物的合成及其抗变态反应活性
SYNTHESIS AND ANTIALLERGIC ACTIVITY OF I-DIPHENYLMETHYL PIPERAZINE DERIVATIVES;
二苯甲基哌嗪类化合物的合成及其抗变态反应活性
Synthesis of 1-(2,3-Dihydrobenzo[b][1,4]dioxin-2-yl)-2-formyl piperazine
1-(1,4-苯并二噁烷-2-甲酰基)哌嗪的合成
Study on the Purification Process of N-(2,6-dimethylphenyl)-2-(piperazin-1-yl)acetamide
N-(2,6-二甲苯基)-2-(1-哌嗪基)乙酰胺纯化工艺研究
Synthesis of N,N′-Di(3-amino-dithiocarboxylic)propionyl piperazine;
N,N′—二(3-氨基二硫代甲酸酯基)丙酰基哌嗪的合成
Synthesis of 1,4-Di(5,5-bismethyl-1,3-oxy-2-phosphacyclohexyl-phosphacyl) piperazine
1,4-二(5,5-二甲基-1,3-二氧-2-磷环己基膦酰基)哌嗪的合成研究
Synthesis of 5-(Acetamidomethyl)-3-[3-fluoro-4-(1-piperazinyl)phenyl] isoxazoline
5-乙酰胺甲基-3-[3-氟-4-(1-哌嗪基苯基)]异噁唑啉的合成
Theoretical Studies on the Mechanism of DNA Alkylation by the Metabolites of 3,5-Dimethyl-1-nitrosopiperazine
3,5-二甲基-亚硝基哌嗪代谢物对DNA烷化作用的理论研究
DETERMINATION oF 1 -[BIS(4-FLUOROPHENYL)METHYL-]PIPERAZINEBY DUAL-WAVELENGTHTLC SCANNER
双波长薄层色谱扫描法测定1－［4，4＇－二氟二苯甲基］哌嗪
Microwave-Assisted Synthesis of 2-[4-Bi-(4-fluorophenyl)- methylpiperazin-1-yl] Acteyl Hydrazones
微波辐射下2-[4-二-(4-氟苯)甲基]哌嗪乙酰腙化合物的合成
Objective To study improved synthetic method of1-[(4- chlorophenyl) phenylmethyl]- piperazine, the intermediate of cetirizine hydrochloride.
目的探讨西替利嗪的中间体1-犤(-氯苯基)甲基犦-哌嗪的合成方法的改进。