Investigations towards the chemoselective thioacetaliztion of carbonyl compounds by using ionic liquid [bmim]Br as a recyclable catalytic medium

被引：42

作者：

Kamal, A ^{[1
]}

Chouhan, G ^{[1
]}

机构：

[1] Indian Inst Chem Technol, Div Organ Chem, Hyderabad 500007, Andhra Pradesh, India

来源：

ADVANCED SYNTHESIS & CATALYSIS | 2004年 / 346卷 / 05期

关键词：

aldehydes; 1-n-butyl-3-methylimidazolium bromide; chemoselectivity; ionic liquid; thioacetalization; thioacetals;

D O I：

10.1002/adsc.200303171

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The ionic liquid based on the 1-n-butyl-3-methylimidazolium cation has been prepared and used as an efficient catalytic medum for the chemo-selective thioacetalization of carbonyl compounds. Furthermore, recycling and reuse of this ionic liquid medium has been demonstrated. Moreover, the use of this catalytic medium not only avoids the generation of waste but also provides a green process with minimal hazards.

引用

页码：579 / 582

页数：4

共 30 条

[1]

Anastas P. T., 1998, GREEN CHEM THEORY PR

[2] Catalysis and sustainable (green) chemistry [J].

Centi, G ;

Perathoner, S .

CATALYSIS TODAY, 2003, 77 (04) :287-297

[3]

DAY SK, 2004, TETRAHEDRON LETT, V45, P1035

[4] Ionic liquid (molten salt) phase organometallic catalysis [J].

Dupont, J ;

de Souza, RF ;

Suarez, PAZ .

CHEMICAL REVIEWS, 2002, 102 (10) :3667-3691

[5] Neutral lithium triflate (LiOTf) efficiently catalyzes chemoselective preparations of cyclic and acyclic dithioacetals from carbonyl compounds, acylals, and O,O-cyclic and open-chain acetals under solvent-free conditions [J].

Firouzabadi, H ;

Eslami, S ;

Karimi, B .

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 2001, 74 (12) :2401-2406

[6] Iodine catalyzes efficient and chemoselective thioacetalization of carbonyl functions, transthioacetalization of O,O- and S,O-acetals and acylals [J].

Firouzabadi, H ;

Iranpoor, N ;

Hazarkhani, H .

JOURNAL OF ORGANIC CHEMISTRY, 2001, 66 (22) :7527-7529

[7] Diels-Alder reactions in room-temperature ionic liquids [J].

Fischer, T ;

Sethi, A ;

Welton, T ;

Woolf, J .

TETRAHEDRON LETTERS, 1999, 40 (04) :793-796

[8]

GREENE TW, 1999, PROTECTIVE GROUPS OR, P293

[9]

Holbrey JD., 1999, Clean. Prod. Process., V1, P223, DOI [10.1007/s100980050036, DOI 10.1007/S100980050036]

[10] Room temperature ionic liquid promoted synthesis of 1,5-benzodiazepine derivatives under ambient conditions [J].

Jarikote, DV ;

Siddiqui, SA ;

Rajagopal, R ;

Daniel, T ;

Lahoti, RJ ;

Srinivasan, KV .

TETRAHEDRON LETTERS, 2003, 44 (09) :1835-1838

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