Aminomethylation of acetylene alcohols and their esters with gem-diamines catalyzed by complexes of d-transition and rare-earth metals
摘要:
An efficient synthetic procedure was developed for preparation of oxygen-containing propargylamines with high yields and selectivity by aminomethylation of propargyl alcohols and their esters with gem-diamines catalyzed by complexes and salts of d-transition metals and lanthanides.
Mild and efficient synthesis of propargylamines by copper-catalyzed Mannich reaction
作者:Lothar W. Bieber、Margarete F. da Silva
DOI:10.1016/j.tetlet.2004.09.079
日期:2004.11
Terminal alkynes undergo mild and efficient aminomethylation with aqueous formaldehyde and secondary amines under CuI catalysis. In most cases high to nearly quantitative yields of tertiary propargylamines are obtained in DMSO solution at room temperature. Aromatic, aliphatic and silylated acetylenes as well as alkynols can be used. Primary amines are less reactive and satisfactory yields of secondary propargylamines
Rearrangement–cyclization of dialkyl(4-hydroxybut-2-ynyl)meth-allyl- and dialkylcrotyl(4-hydroxy-but-2-ynyl) ammonium halides
作者:E. O. Chukhajian、A. S. Gabrielyan、El. O. Chukhajian、K. G. Shahkhatuni、H. A. Panosyan
DOI:10.1007/s10593-010-0425-1
日期:2009.11
It was found that dialkyl(4-hydroxybut-2-ynyl)methallyl- and dialkylcrotyl(4-hydroxybut-2-ynyl)- ammonium halides undergo a Stevens rearrangement under the influence of aqueous alkali with transfer of the reaction center in the receiving group and inversion of the migrating group followed by cyclization to amino derivatives of furan.
Synthesis of Optically Active Bifunctional Isoprenoid Building Blocks by Rhodium(I)-Catalyzed Asymmetric Allylamine to Enamine Isomerization
作者:Rudolf Schmid、Hans-J�rgen Hansen
DOI:10.1002/hlca.19900730516
日期:1990.8.8
The application of the known asymmetric allylamine to enamine isomerization methodology to bifunctional C5-isoprenoid allylic amines of types IId and IIe (Scheme 1) is described. It is shown that a number of such substrates can be isomerized with enantioselectivities of > 90% ee. using cationie Rh1 complexes containing (6. 6′-dimethylbiphenyl′2, 2′-diyl)bis(dipheny phosphine) (BIPHEMP; 9) as asymmetry-inducing
Agents for the Treatment of Overactive Detrusor. II. Synthesis and Inhibitory Activity on Detrusor Contraction of 1,1'-Biphenyl-2,6-dicarboxylic Acid Diesters with an Aminoalkyl Group in the Ester Function.
A series of 1,1'-biphenyl-2,6-dicarboxylic acid diesters with an aminoalkyl group in the ester function were synthesized and examined for their inhibitory activity on detrusor contraction in vitro and in vivo. In the in vivo test, arrhythmia was observed as a side effect. Among those compounds synthesized, 2-methyl 6-[4-(1-methylpiperidinyl)] 3-hydroxy-5-methyl-2'-nitro-1,1'-biphenyl-2,6-dicarboxylate
合成了一系列具有酯功能的氨基烷基的1,1'-联苯-2,6-二羧酸二酯,并在体外和体内研究了它们对逼尿肌收缩的抑制活性。在体内试验中,观察到心律不齐为副作用。在合成的那些化合物中,2-甲基6- [4-(1-甲基哌啶基)] 3-羟基-5-甲基-2'-硝基-1,1'-联苯-2,6-二羧酸酯(18)具有很强的抑制作用体内逼尿肌收缩活性(ED50 = 0.54 mg / kg iv,ED50 = 7.2mg / kg id),且与副作用的分离效果好。选择化合物18作为进一步治疗过度逼尿肌的药物进行进一步的药理评估。
Cholinolytic activity of piperidinobutine esters of certain carboxylic acids
作者:L. A. Starshinova、S. A. Shelkovnikov、L. A. Vikhreva、T. A. Pudova、M. Gulyamov、A. A. Abduvakhabov、N. N. Godovikov