摘要:
The invention concerns compounds of formula (I), wherein: R1, R2, R3 and R4 represent a hydrogen atom, an alkyl radical comprising 1 to 4 carbon atoms, a phenyl radical optionally substituted by one or several groups selected among vinyl, hydroxy, nitro, amino, bromo, chloro, fluoro, iodo, benzyloxy radicals, alkyl or alkyloxy radicals comprising 1 to 4 carbon atoms optionally substituted by one or several bromo, chloro, fluoro or iodo groups; R5, R6, R7 and R8 represent a hydrogen atom or an alkyl radical comprising 1 to 4 carbon atoms; Ra, Rb, and Rc represent a hydrogen atom, a phenyl radical optionally substituted by one or several groups selected among the vinyl, hydroxy, nitro, amino, bromo, chloro, fluoro, iodo, benzyloxy radicals, alkyl or alkyloxy radicals comprising 1 to 4 carbon atoms, optionally substituted by one or several bromo, chloro, fluoro or iodo groups. The invention also concerns a silica modified by a compound of formula (I); a sole-gel material derived from a compound of formula (I); a mesoporous silica modified by a compound of formula (I). The invention further concerns the use of said materials for selective trapping of carbon monoxide.
摘要翻译:本发明涉及式(I)化合物,其中:R 1,R 2,R 3和R 4 SUB 表示氢原子,含有1至4个碳原子的烷基,任选被一个或多个选自乙烯基,羟基,硝基,氨基,溴,氯,氟,碘,苄氧基,烷基或烷氧基的基团取代的苯基 包含1至4个碳原子的基团,任选被一个或几个溴,氯,氟或碘基取代; R 5,R 6,R 7和R 8表示氢原子或烷基,其包含1〜 4个碳原子; R a,R b和R c表示氢原子,任选地被一个或几个选自乙烯基, 羟基,硝基,氨基,溴,氯,氟,碘,苄氧基,包含1至4个碳原子的烷基或烷氧基,任选被一个或几个溴,氯,氟或碘基取代。 本发明还涉及通过式(I)化合物改性的二氧化硅; 衍生自式(I)化合物的唯一凝胶材料; 由式(I)化合物改性的介孔二氧化硅。 本发明还涉及所述材料用于选择性捕集一氧化碳的用途。
摘要:
The present invention concerns a method for the synthesis of glycerol dithiocarbamates or bis-dithiocarbamates (GDTCs) in which a reaction medium comprising (1) a carbonate selected from diethyl carbonate, dimethyl carbonate and ethylene or propylene carbonate associated with a glycerol type polyol in the presence of a basic catalyst or (2) a cyclic carbonate comprising five ring members, in a solvent medium, is supplemented with a primary or secondary amine in the presence of carbon disulphide, and the GDTC formed is recovered. In particular, a glycerol type polyol is brought into the presence of diethyl carbonate in the presence of a catalyst, then a primary or secondary amine is added to the reaction medium in the presence of carbon disulphide, and the GDTC formed is recovered. The invention can be used for one-step synthesis of glycerol dithiocarbamates directly from glycerol as the starting material and solvent. This method involves glycerol, diethyl carbonate, carbon disulphide (CS2) and a primary or secondary amine to produce glycerol dithiocarbamates; the glycerol/NaOH phase can be recycled 6 times without a noticeable drop in yield; the ethyl acetate is also recycled after each extraction.
摘要:
The present invention concerns a method for the synthesis of glycerol dithiocarbamates or bis-dithiocarbamates (GDTCs) in which a reaction medium comprising (1) a carbonate selected from diethyl carbonate, dimethyl carbonate and ethylene or propylene carbonate associated with a glycerol type polyol in the presence of a basic catalyst or (2) a cyclic carbonate comprising five ring members, in a solvent medium, is supplemented with a primary or secondary amine in the presence of carbon disulphide, and the GDTC formed is recovered. In particular, a glycerol type polyol is brought into the presence of diethyl carbonate in the presence of a catalyst, then a primary or secondary amine is added to the reaction medium in the presence of carbon disulphide, and the GDTC formed is recovered. The invention can be used for one-step synthesis of glycerol dithiocarbamates directly from glycerol as the starting material and solvent. This method involves glycerol, diethyl carbonate, carbon disulphide (CS2) and a primary or secondary amine to produce glycerol dithiocarbamates; the glycerol/NaOH phase can be recycled 6 times without a noticeable drop in yield; the ethyl acetate is also recycled after each extraction.
摘要:
Provided are techniques for extending the capabilities of pen-based interfaces. Embodiments are provided that receive an input that can include a selection, a confirmation, and/or a completion or cancellation. According to some embodiments tension-based techniques (hardwired or software) provide an interface whereby a user can confirm, cancel, or terminate a selected command gesture. The various embodiments employ techniques that include muscular tension and/or pen contact with a screen. Also provided are spring-once techniques that keeps the tool active for one use after a button has been deactivated.
摘要:
FIG. 1 is a front view of an article of jewelry showing my new design; FIG. 2 is a back view thereof; FIG. 3 is a side view thereof; FIG. 4 is an opposite side view thereof; FIG. 5 is a top view thereof; FIG. 6 is a bottom view thereof; and, FIG. 7 is a perspective view thereof.