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Transfer hydrogenation of citral to citronellol with Ru complexes in the mixed solvent of water and polyethylene glycol
Author(s) -
Cheng Haiyang,
Liu Ruixia,
Hao Jianmin,
Wang Qiang,
Yu Yancun,
Cai Shuxia,
Zhao Fengyu
Publication year - 2010
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.1694
Subject(s) - citronellol , chemistry , citral , catalysis , polyethylene glycol , solvent , selectivity , transfer hydrogenation , organic chemistry , peg ratio , citronellal , nuclear chemistry , chromatography , ruthenium , geraniol , finance , essential oil , economics
The transfer hydrogenation of citral to citronellol was studied with [RuCl 2 ( benzene )] 2 catalyst in a mixed solvent of water and polyethylene glycol (H 2 OPEG). The influence of several important factors including hydrogen source, solvent, temperature and active species is discussed. Under the present conditions, citronellol was produced with an extremely high selectivity above 90%. The Ru complexes could be immobilized in the H 2 OPEG phase well and separated from organic products successfully. Moreover, a stable catalytic activity was obtained after the first run, although the decomposition of Ru complexes occurred during the recycling processes. The selectivity to citronellol decreased but kept a stable level about 60% in the recycling runs. Copyright © 2010 John Wiley & Sons, Ltd.
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