Cu(i) catalysed cyclopropanation with enantiopure scorpionate type ligands derived from (+)-camphor or (-)-menthone

Godau T, Bleifuß S, Müller A, Roth T, Hoffmann S, Heinemann FW, Burzlaff N (2011)


Publication Type: Journal article, Original article

Publication year: 2011

Journal

Original Authors: Godau T., Bleifuß S.M., Müller A.L., Roth T., Hoffmann S., Heinemann F.W., Burzlaff N.

Publisher: Royal Society of Chemistry

Book Volume: 40

Pages Range: 6547-6554

Journal Issue: 24

DOI: 10.1039/c1dt10032g

Abstract

One-pot syntheses of three new enantiopure heteroscorpionate ligands derived from (+)-camphor or (-)-menthone are described. The ligands are obtained by reacting pyrazoles derived from (+)-camphor or (-)-menthone with sodium hydride and thionyl chloride. Subsequent reactions with pyridine and various aldehydes afford the tripod ligands in multi-gram amounts. Especially the menthopyrazole based ligand 6 showed encouraging ee values up to 69% in the Cu(i) catalysed enantioselective cyclopropanation of styrene with ethyl diazoacetate. © 2011 The Royal Society of Chemistry.

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How to cite

APA:

Godau, T., Bleifuß, S., Müller, A., Roth, T., Hoffmann, S., Heinemann, F.W., & Burzlaff, N. (2011). Cu(i) catalysed cyclopropanation with enantiopure scorpionate type ligands derived from (+)-camphor or (-)-menthone. Dalton Transactions, 40(24), 6547-6554. https://doi.org/10.1039/c1dt10032g

MLA:

Godau, Tom, et al. "Cu(i) catalysed cyclopropanation with enantiopure scorpionate type ligands derived from (+)-camphor or (-)-menthone." Dalton Transactions 40.24 (2011): 6547-6554.

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