Your Current Location is:

Ionic Liquids

File Name
Author
File Size
Download Path
邓友全,石峰
391.22 KB

本发明涉及二氧化碳与环氧化合物通过催化环加成制相应的环状碳酸酯的方法。其特征是采用由含氮杂环化合物卤化烷基吡啶或卤化1,3-二烷基咪唑与非金属卤化物构成的室温下呈液体状态的离子液体为催化剂,碱金属卤化物或四丁基溴化铵作为反应的助催化剂,在反应温度为100至140℃,二氧化碳初始压力为 1.5-4.5MPa,反应时间为4-8小时,催化剂用量为环氧化合物量的0.2-2.5mol%条件下,实现二氧化碳与环氧化合物通过催化环加成制相应 的环状碳酸酯。该方法的主要特点是室温离子液体催化活性高,反应条件相对温和,操作简便,产物分离和催化剂回收容易,室温离子液体催化剂构成相对简单,且 可重复使用。

邓友全,彭家建,石峰. 合成环状碳酸酯的方法. Cn1343668. 2005.

邓友全,石峰
304.22 KB

本发明涉及胺与二氧化碳通过催化羰化制相应二取代脲的方法。其特征是采用离子液体为溶剂,碱作为反应的催化剂,在胺与离子液体的体积比为 1∶4-10∶1,催化剂与胺的质量比为1∶200-1∶10,反应温度为80至200℃,二氧化碳初始压力为1atm-60atm条件下,反应时间为 1-10小时,实现胺与二氧化碳羰化合成相应的二取代脲,产品收率87-99%,纯度97-99%。该方法的主要特点是反应活性高,操作简便,产物分离和 催化剂回收容易,室温离子液体催化剂构成相对简单,且可重复使用。

邓友全,石峰,彭家建,等. 胺与二氧化碳反应制二取代脲的方法. Cn1424310. 2005.

邓友全,石峰
287.79 KB

本发明涉及胺与碳酸二甲酯通过催化羰化制相应氨基甲酸酯的方法。其特征是采用离子液体为溶剂和催化剂体系,在离子液体与所用胺的质量比为 1∶10-10∶1,与所用碳酸二甲酯的质量比为1∶100-10∶1,反应温度为40至200℃,反应时间为0.5-5小时,,实现胺与碳酸二甲酯羰化 合成相应的氨基甲酸酯。对于一般的脂肪族胺,其收率大于98%,纯度大于98%。该方法的主要特点是反应活性高,操作简便,产物分离和催化剂回收容易,室 温离子液体催化剂构成相对简单,且可重复使用。

邓友全,石峰,顾彦龙,等. 胺与碳酸二甲酯反应制氨基甲酸酯的方法. Cn1424309. 2005.

邓友全,石峰
274.50 KB

本发明涉及一种液相选择氧化催化剂及其制备方法和应用。该催化剂通过共沉淀法由相应的铝化合物和钴化合物制得。该催化剂能够在温度120℃至180℃,空 气压力1.0MPa至5.0MPa条件下催化氧化甲苯和环己烷制苯甲酸和环己醇、环己酮。该催化剂的特点是催化活性高、易分离且可以重复使用,从而有效地 降低了催化剂的成本,具有良好的工业应用前景。

邓友全,熊海,石峰. 液相选择氧化催化剂及其制备方法和应用. Cn1454712. 2005.

邓友全,石峰
374.89 KB

本发明涉及一种催化羰化有机胺制备相应酰胺的方法。其特征是使用担载金催化剂,在初始反应压力为2.0-6.0MPa,反应温度为100-200℃,反应 时间为0.5-5小时,2.0-6.0MPa一氧化碳和氧气混合气为羰化剂,高效地催化羰化有机胺制相应的酰胺。其中,相应的酰胺的收率可达到 75-93%。该方法的主要特点是所用催化剂具有组成相对简单、金原子簇与载体结合牢固、有较规则的颗粒结构的同时,容易与反应体系分离、金不流失及可重 复使用。

邓友全,石峰,彭家建. 催化羰化合成酰胺的方法. Cn1343653. 2005.

李东梅 / 邓友全
100.96 KB

Under mild conditions, Beckmann rearrangement of a variety of ketoximes could proceed in the presence of chlorosulfonic acid using toluene as a solvent with excellent conversion and selectivity. This procedure could also be applied in the dehydration of aldoximes for obtaining the corresponding nitriles.

★★★★☆ D. Li et al. / Tetrahedron Letters 46 (2005) 671–674.

余学军 / 邓友全
250.26 KB

9-beta-D-Arabianofuranosyl guanine (6) and 2-amino-9-(beta-D-arabianofuranosyl)purine (8) were prepared from 2-amino-6-chloro-9-(2,3,5-triphenylmethoxyl-p-D-arabianofuranosyl)purine (4), a key intermediate which was stereoselectively prepared from 2,3,5-triphenylmethoxyl-D-arabianofuranose and 2-amino-6-chloro-purine. The yield of the intermediate was obviously improved and only P-isomer was formed by using the activated molecular sieve as environmental friendly catalyst, overcoming the defect that a 1: 1 mixture of alpha- and beta-isomers was formed, which was difficult to separate, when toxic mercury cyanide was previously used as catalyst.

★★★☆☆ X.-J. Yu et al. / Bioorg. Med. Chem. Lett. 15 (2005) 683–685.

石峰 / 邓友全
283.00 KB

A new kind of silica gel confined ionic liquid containing a metal complex as heterogenized catalysts was prepared for the carbonylation of amines and nitrobenzene without molecular oxygen to afford the corresponding ureas with greatly enhanced catalytic activity (TOF exceeded 11000mol.mol(-1). h(-1)), with a much lower amount of ionic liquids being needed, with easy catalyst separation and possible reusability, and avoidance of the using of explosive CO + O-2 gas mixtures. Such an enhancement in catalytic activity may be derived from the effect of a high concentration of ionic liquid containing a metal complex due to the confinement into the nanopores or cavities of the silica gel matrix.

★★★☆☆ Keywords: amines; carbonylation; ionic liquids; nitrobenzene; phosgene-free

★★★☆☆ Adv. Synth. Catal. 2005, 347, 225 –230.

石峰 / 邓友全
160.60 KB

★★★★★ J. AM. CHEM. SOC. 2005, 127, 4182-4183. ★★★★★

郭术 / 邓友全
106.88 KB

Beckmann rearrangement of several oximes catalyzed by metaboric acid was studied in room temperature ionic liquids. Especially for conversion of cyclohexanone oxime into e-caprolactam, excellent conversion and selectivity were obtained.

★★★☆☆ Keywords: Beckmann rearrangement; Oxime; Metaboric acid; Ionic liquid

★★★☆☆ S. Guo, Y. Deng / Catalysis Communications 6 (2005) 225–228.

 17    1 2 下一页 尾页