Papers by Author: Sa Liu

Abstract: A new tertiary amine derivative of adamantane —N,N,N’,N’-tetramethyl-1, 3-disaminomethyl adamantane dihydrochloride (1), which is a key intermediate for preparing Gemini surfactants and bola surfactants, has been synthesized in this paper. The target compound (1) can be synthesized in high yield by using 1-adamantanecarboxylic acid as raw material. The structure of these compounds has been identified.

Abstract: To develop the potential use of adamantane derivatives in surfactant field, the adamantyl residue was introduced into the quaternary ammonium salt. The method involved synthesizing N-(1-adamantyl)-N, N-dimethylamine from 1-adamantine and quaternizing with different alkylating agents. Eight adamantane-containing quaternary ammonium salts were prepared and their structures were identified by ¹H NMR and IR.

Abstract: Al-containing mesoporous molecular sieves(Al-MCM-41) were synthesized at ambient temperature. The structures of samples were characterized by XRD, N₂-adsorption/desorption isotherms and FT-IR, etc. The evaluation results showed that Al-MCM-41 had higher catalytic activity for isomerization conversion of endo-tetrahydrodicyclo-pentadiene (endo-TCD) into exo-tetrahydrodicyclo-pentadiene (exo-TCD) and adamantane (AdH). Loading inorganic acid on the surface of Al-MCM-41 led increase of its catalytic activity and the yield of adamantane.

Abstract: 3-amino-1-adamantanemethanol was synthesized from adamantane carboxylic acid following the procedures of Ritter reaction, hydrolysis, neutralization and reduced reaction without the participation of bromine. The total yield of 3-amino-1-adamantanemethanol was 43%. The structure of the target compound was characterized by elemental analysis, IR, MS, 1HNMR,etc. In addition, the possible reaction mechanisms was proposed.