Environment friendly organic synthesis using bismuth compounds. An efficient method for carbonyl-ene reactions catalyzed by bismuth triflate

Erin D. Anderson; Justin J. Ernat; Mai P. Nguyen; Ann C. Palma; Ram S. Mohan

doi:10.1016/j.tetlet.2005.09.035

Environment friendly organic synthesis using bismuth compounds. An efficient method for carbonyl-ene reactions catalyzed by bismuth triflate

Erin D. Anderson, Justin J. Ernat, Mai P. Nguyen, Ann C. Palma, Ram S. Mohan

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

Bismuth triflate (0.1 mol %) is a highly efficient catalyst for the cyclization of citronellal 1, a reaction that yields a ratio of 80:20 of isopulegol 2 and neoisopulegol 3. This methodology has also been extended to the synthesis of substituted piperidines. The bismuth triflate catalyzed ene reaction of aldehyde 4 gives a 70:30 mixture of piperidines 5 and 6. The advantages of these methods include the use of a highly efficient catalyst that is relatively nontoxic, cheap and easy to handle.

Original language	English (US)
Pages (from-to)	7747-7750
Number of pages	4
Journal	Tetrahedron Letters
Volume	46
Issue number	45
DOIs	https://doi.org/10.1016/j.tetlet.2005.09.035
State	Published - Nov 7 2005
Externally published	Yes

Bibliographical note

Funding Information:
We are grateful to the National Science Foundation for an RUI (Research at An Undergraduate Institution) grant. We also wish to acknowledge Research Corporation for a Cottrell College Science Award. R.M. wishes to thank The Camille and Henry Dreyfus Foundation for a Henry Dreyfus Teacher Scholar Award.

Keywords

Bismuth and compounds
Carbonyl-ene reaction
Cyclizations
Lewis acids

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title = "Environment friendly organic synthesis using bismuth compounds. An efficient method for carbonyl-ene reactions catalyzed by bismuth triflate",

abstract = "Bismuth triflate (0.1 mol %) is a highly efficient catalyst for the cyclization of citronellal 1, a reaction that yields a ratio of 80:20 of isopulegol 2 and neoisopulegol 3. This methodology has also been extended to the synthesis of substituted piperidines. The bismuth triflate catalyzed ene reaction of aldehyde 4 gives a 70:30 mixture of piperidines 5 and 6. The advantages of these methods include the use of a highly efficient catalyst that is relatively nontoxic, cheap and easy to handle.",

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AU - Ernat, Justin J.

AU - Nguyen, Mai P.

AU - Palma, Ann C.

AU - Mohan, Ram S.

N1 - Funding Information: We are grateful to the National Science Foundation for an RUI (Research at An Undergraduate Institution) grant. We also wish to acknowledge Research Corporation for a Cottrell College Science Award. R.M. wishes to thank The Camille and Henry Dreyfus Foundation for a Henry Dreyfus Teacher Scholar Award.

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AB - Bismuth triflate (0.1 mol %) is a highly efficient catalyst for the cyclization of citronellal 1, a reaction that yields a ratio of 80:20 of isopulegol 2 and neoisopulegol 3. This methodology has also been extended to the synthesis of substituted piperidines. The bismuth triflate catalyzed ene reaction of aldehyde 4 gives a 70:30 mixture of piperidines 5 and 6. The advantages of these methods include the use of a highly efficient catalyst that is relatively nontoxic, cheap and easy to handle.

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KW - Cyclizations

KW - Lewis acids

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Environment friendly organic synthesis using bismuth compounds. An efficient method for carbonyl-ene reactions catalyzed by bismuth triflate

Abstract

Bibliographical note

Keywords

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