Abstract
The Heck arylation of 2-methylprop-2-en- I -ol in ionic liquids and organic solvents is reported using a range of homogeneous and heterogeneous palladium catalysts. Higher activity is observed in the ionic liquid media compared with N-methyl pyrrolidinone and under solventless conditions. The ionic liquid-catalyst system may be recycled easily with little loss in activity, although significant palladium leaching from the heterogeneous catalyst was observed. In the case of Trans-bis(2,3-dihydro-3-methylbenzothiazole-2-ylidene)diiodopalladium (11) reported to be highly active for this transformation, significant induction petiods were observed indicating that nanoparticles may be responsible for the catalysis. Using the ionic liquid Heck reaction, a recyclable synthesis for the fragrance beta-Lilial((R)) has been developed. (c) 2004 Elsevier B.V. All rights reserved.
Original language | English |
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Pages (from-to) | 61-66 |
Number of pages | 6 |
Journal | JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL |
Volume | 231 (1-2) |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 20 Apr 2005 |
ASJC Scopus subject areas
- Catalysis
- Process Chemistry and Technology
- Materials Science (miscellaneous)