作者:Sanjukta Banerjee、Yanhui Shi、Changsheng Cao、Aaron L. Odom
DOI:10.1016/j.jorganchem.2005.03.025
日期:2005.11
for the iminohydrazination of alkynes, a new multicomponent coupling reaction involving an alkyne, hydrazine, and isonitrile. A brief study on the scope of the reaction suggests that it is applicable to internal and terminal alkynes, alkyl and aryl isonitriles, and alkyl- and aryl-containing 1,1-disubstituted hydrazines. The best yields were obtained with terminal alkynes and alkyl isonitriles. The regioselectivity
Directed Aminomethylation of Pyrrole, Indole, and Carbazole with N,N,N′,N′-Tetramethylmethanediamine
作者:V. R. Akhmetova、E. M. Bikbulatova、N. S. Akhmadiev、V. M. Yanybin、T. F. Boiko、R. V. Kunakova、A. G. Ibragimov
DOI:10.1134/s1070428018050056
日期:2018.5
aminomethylation of pyrrole and indole with N,N,N′,N′-tetramethylmethanediamine in the presence of 5 mol % of ZrOCl2·8H2O proceeds selectively at the positions 2, 5 of pyrrole and 1, 3 of indole. Carbazole under the same conditions affords 3-formyl-9-aminomethyl derivative. The reaction in the presence of 5 mol % of K2CO3 occurs as monoaminomethylation: for pyrrole at the position 2, for indole at the position
Mannich reactions of nucleophilic aromatic compounds involving aminals and α-amino ethers activated by chlorosilane derivatives; catalysis by chlorotrimethylsilane
作者:Harry Heaney、George Papageorgiou、Robert F. Wilkins
DOI:10.1039/c39880001161
日期:——
with dichloro(dimethyl)- and trichloro(methyl)-silanes, but whereas chlorotrimethylsilane interacts with α-amino ethers to yield iminium salts, the reaction of the latter silane with aminals does not: in situ Mannich reactions may be carried out using these systems, and in the case of the reactions using chlorotrimethylsilane and aminals the reactions can be catalytic with respect to the silane.