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- W1994978900 abstract "Lithiation of 1-methylaziridine borane, 1-(tert-butyldimethylsiloxyethyl)aziridine borane, or 1-(tert-butyldimethylsiloxyethyl)-2-methylaziridine borane occurs syn to the boron substituent, while lithiation of 1-(tert-butyldimethylsiloxyethyl)-2-trimethylstannylaziridine borane occurs anti to boron as well as silicon due to the steric effect of trimethylsilyl group (s-butyllithium was used in all cases). Kinetically controlled lithiation in the first three cases results from a combination of steric and electrostatic effects. Enantioselective lithiation occurs in the presence of (−)-sparteine, with product enantioselectivities near 70% ee." @default.
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- W1994978900 date "2003-12-01" @default.
- W1994978900 modified "2023-10-09" @default.
- W1994978900 title "The stereochemistry of aziridine borane lithiation: diastereoselectivity and enantioselectivity" @default.
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- W1994978900 doi "https://doi.org/10.1016/j.tet.2003.09.035" @default.
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