Abstract
Pincer-ligated iridium complexes catalyze the dehydrogenation of alkanes to give the corresponding alkenes. In some cases high selectivity for the terminal position of n-alkanes, to yield alpha-olefins, is observed; this selectivity is highly dependent on the nature of the pincer ligand. We have found that dehydrogenation can be usefully coupled with secondary reactions (tandem catalysis), particularly olefin metathesis, to afford an overall cycle for the metathesis of n-alkanes. More extensive dehydrogenation can result in the unprecedented homogeneously catalyzed dehydroaromatization of n-alkanes. For example, n-octane is converted to ethylbenzene and predominantly o-xylene while n-decane gives primarily o-propyltoluene as well as o-diethylbenzene and n-butylbenzene. Studies of the factors determining selectivity and the mechanism and scope of these reactions and will be discussed.
| Original language | English |
|---|---|
| Title of host publication | ACS National Meeting Book of Abstracts |
| Publication status | Published - 2011 |
| Event | 242nd ACS National Meeting and Exposition - Denver, CO, United States Duration: Aug 28 2011 → Sep 1 2011 |
Other
| Other | 242nd ACS National Meeting and Exposition |
|---|---|
| Country | United States |
| City | Denver, CO |
| Period | 8/28/11 → 9/1/11 |
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ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
Cite this
Dehydrogenation and related reactions of alkanes catalyzed by pincerâ-iridium complexes. / Goldman, Alan S; Krogh-Jespersen, Karsten; Brookhart, Maurice.
ACS National Meeting Book of Abstracts. 2011.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Dehydrogenation and related reactions of alkanes catalyzed by pincerâ-iridium complexes
AU - Goldman, Alan S
AU - Krogh-Jespersen, Karsten
AU - Brookhart, Maurice
PY - 2011
Y1 - 2011
N2 - Pincer-ligated iridium complexes catalyze the dehydrogenation of alkanes to give the corresponding alkenes. In some cases high selectivity for the terminal position of n-alkanes, to yield alpha-olefins, is observed; this selectivity is highly dependent on the nature of the pincer ligand. We have found that dehydrogenation can be usefully coupled with secondary reactions (tandem catalysis), particularly olefin metathesis, to afford an overall cycle for the metathesis of n-alkanes. More extensive dehydrogenation can result in the unprecedented homogeneously catalyzed dehydroaromatization of n-alkanes. For example, n-octane is converted to ethylbenzene and predominantly o-xylene while n-decane gives primarily o-propyltoluene as well as o-diethylbenzene and n-butylbenzene. Studies of the factors determining selectivity and the mechanism and scope of these reactions and will be discussed.
AB - Pincer-ligated iridium complexes catalyze the dehydrogenation of alkanes to give the corresponding alkenes. In some cases high selectivity for the terminal position of n-alkanes, to yield alpha-olefins, is observed; this selectivity is highly dependent on the nature of the pincer ligand. We have found that dehydrogenation can be usefully coupled with secondary reactions (tandem catalysis), particularly olefin metathesis, to afford an overall cycle for the metathesis of n-alkanes. More extensive dehydrogenation can result in the unprecedented homogeneously catalyzed dehydroaromatization of n-alkanes. For example, n-octane is converted to ethylbenzene and predominantly o-xylene while n-decane gives primarily o-propyltoluene as well as o-diethylbenzene and n-butylbenzene. Studies of the factors determining selectivity and the mechanism and scope of these reactions and will be discussed.
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M3 - Conference contribution
BT - ACS National Meeting Book of Abstracts
ER -