Raman and IR spectroscopic studies of the interaction between counterion and polar group in self-assembled systems of AOT-homologous “sodium dialkyl sulfosuccinates’'
Tetrabutylammonium Bromide Media Aza-Michael Addition of 1,2,3,6-Tetrahydrophthalimide to Symmetrical Fumaric Esters and Acrylic Esters under Solvent-Free Conditions
The aza-Michael addition of 1,2,3,6-tetrahydrophthalimide with symmetrical fumaric esters has been performed efficiently in a solvent-free system at 100 °C and using 1,4-diazabicyclo[2.2.2]octane (DABCO) as a base in the presence of tetrabutylammonium bromide (TBAB). The products were obtained in good to high yields within 2.5-7.0 h. This reaction worked well on linear alkyl fumarates and was not effective
This application relates to derivatives of hydrocarbon terpenes (e.g., myrcene or farnesene), to methods of making the derivatives, and to the use of the derivatives as surfactants.
Environmental Friendly Synthesis of Novel Isatin Ketal and Isatin Schiff Base Derivatives Using Michael Addition Reaction under Solvent-Free Conditions
efficient and simple procedure for the synthesis of novel isatin derivatives is described. Michael addition of aniline Schiffbases of isatin or p‐toluidine Schiffbases of isatin to fumaric esters affords the Michael adduct compounds in good to high yields in the presence of K2CO3 and tetrabutylammonium bromide (TBAB) under solvent‐free conditions. Repeating of this reaction about spiro[1,3‐dioxolane‐2,3′‐indol]‐2′(1′H)‐one
描述了一种合成新的靛红衍生物的有效且简单的方法。在无溶剂条件下,在K 2 CO 3和四丁基溴化铵(TBAB)的存在下,将靛红的苯胺希夫(Schiff)碱或靛蓝的对甲苯胺的席夫(Schiff)碱加至富马酸酯,可使迈克尔加合物以高收率获得高至高收率。重复约螺[1,3-二氧戊环-2,3'-吲哚] -2' - (1'该反应的ħ) -酮,为迈克尔供体,在1,4-二氮杂双环的存在[2.2.2]辛烷(DABCO)在相同条件下以高收率获得迈克尔加合物。
Unexpected formation of 5-alkylidene derivatives of hydantoin from the Michael addition of 4-phenylurazole to fumaric esters
An unexpected reaction between 4-phenylurazole and fumaric esters which led to the formation of 5-alkylidene derivatives of hydantoin is described in this paper. The reaction takes place in the presence of tetrabutylammonium bromide (TBAB), and 1,4-diaza-bicyclo[2,2,2]octane (DABCO) at 70 °C under solvent-free conditions.