An efficient and highly enantio- and diastereoselective cyclopropanation of olefins catalyzed by Schiff-base ruthenium(II) complexes. Miller, J. A., Jin, W., & Nguyen, S. T. Angewandte Chemie - International Edition, 41(16):2953–2956, 2002.
doi  abstract   bibtex   
Both electron-rich and electron-deficient olefins - such as styrene and methyl methacrylate - undergo efficient (yields \textgreater 90%) cyclopropanation with ethyl diazoacetate as the carbene source to give predominantly trans products with exceptionally high enantioselectivity when the (salen)Ru catalyst shown is used (see scheme).
@article{miller_efficient_2002,
	title = {An efficient and highly enantio- and diastereoselective cyclopropanation of olefins catalyzed by {Schiff}-base ruthenium({II}) complexes},
	volume = {41},
	issn = {14337851},
	doi = {10.1002/1521-3773(20020816)41:16<2953::AID-ANIE2953>3.0.CO;2-2},
	abstract = {Both electron-rich and electron-deficient olefins - such as styrene and methyl methacrylate - undergo efficient (yields {\textgreater} 90\%) cyclopropanation with ethyl diazoacetate as the carbene source to give predominantly trans products with exceptionally high enantioselectivity when the (salen)Ru catalyst shown is used (see scheme).},
	number = {16},
	journal = {Angewandte Chemie - International Edition},
	author = {Miller, Jason A. and Jin, Wiechang and Nguyen, Sonbinh T.},
	year = {2002},
	pmid = {12203422},
	keywords = {Asymmetric catalysis, Cyclopropanation, N, O ligands, Ruthenium},
	pages = {2953--2956},
}

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