54835-92-6Relevant articles and documents
A chiral bis(oxazoline) ligand embedded into polysiloxane gel: Application to a reusable copper catalyst for asymmetric cyclopropanation
Motoyama, Yukihiro,Nishikata, Takashi,Nagashima, Hideo
supporting information; experimental part, p. 78 - 82 (2011/10/08)
"Box"ed in: A novel polysiloxane gel encapsulated Cu II/bis(oxazoline) (CuII/Box) species was synthesized and used as a recyclable catalyst in the asymmetric cyclopropanation of alkenes with L-menthyl diazoacetate. Copyright
Highly Enantioselective Intermolecular Cyclopropanation Catalyzed by Dirhodium(II) Tetrakis[3(S)-phthalimido-2-piperidinonate]: Solvent Dependency of the Enantioselection
Kitagaki, Shinji,Matsuda, Hideo,Watanabe, Nobuhide,Hashimoto, Shun-Ichi
, p. 1171 - 1174 (2007/10/03)
The enantioselectivity in cyclopropanations catalyzed by dirhodium(II) tetrakis[3(S)-phthalimido-2-piperidinonate] has been found to be substantially improved by employing ether as the rarely used solvent. Cyclopropanations of styrenes or 1,1-disubstituted alkenes with 2,4-dimethyl-3-pentyl diazoacetate in ether are promoted by this catalyst to afford the corresponding cyclopropane products in the highest levels of enantioselectivity (up to 98% ee) reported to date for the dirhodium(II)-catalyzed intermolecular cyclopropanation reactions.