58688-35-0Relevant articles and documents
B(C6F5)3-Catalyzed Hydrosilylation of Vinylcyclopropanes
He, Tao,Long, Peng-Wei,Oestreich, Martin
supporting information, p. 7383 - 7386 (2020/10/12)
A hydrosilylation of vinylcyclopropanes (VCPs) catalyzed by the strong boron Lewis acid B(C6F5)3 is reported. For the majority of VCPs, little or no ring opening of the cyclopropyl unit is observed. Conversely, for VCPs with bulky R groups, such as ortho-substituted aryl rings or branched alkyl residues, ring opening is the exclusive reaction pathway. This finding is explained by the thwarted hydride delivery to a sterically shielded, β-silicon-stabilized cyclopropylcarbinyl cation intermediate.
Another Role of Copper in the SimmonsSmith Reaction: Copper-catalyzed Nucleophilic Michael-type Cyclopropanation of a,β-Unsaturated Ketones
Fujii, Kanami,Misaki, Tomonori,Sugimura, Takashi
, p. 634 - 636 (2014/05/20)
Cyclopropanation was performed using the Furukawa procedure with CH2I2/Et2Zn and a,β-unsaturated ketones. The reaction was performed in the presence of a copper salt. The reactivity was highly dependent on the substrate structure, and cyclopropanated products were obtained in better yields than those achieved using the original SimmonsSmith conditions with a ZnCu couple in some cases. Stereospecificity was observed in a certain case; however, the synthesis of an asymmetric version with a chiral ligand was not successful.
Synthesis of Some Substituted Pyrrolidines from Cyclopropyl Carbonyl Compounds
Blake, Keith W.,Gillies, Iain,Denney, Ronald C.
, p. 700 - 702 (2007/10/02)
A series of alkyl and aryl cyclopropyl carbonyl compounds, when refluxed in N-methylformamide in the presence of magnesium chloride, gave variously substituted pyrrolidines.