Supramolecular double helical Cu(I) complexes for asymmetric cyclopropanation.
Chiral double-stranded helicates, formed between Cu(I) ion and C(2)-symmetric oligopyridines, were used for catalytic asymmetric cyclopropanation of alkenes; low catalyst loadings (0.2 mol%), high TONs (up to 404) and short reaction times (30-60 min) were achieved with [Cu(2)L(2)]OTf(2)(L = chiral C(2)-symmetric terpyridine).
Yeung
Chi-Tung
CT
Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China.
Yeung
Ho-Lun
HL
Tsang
Chui-Shan
CS
Wong
Wai-Yeung
WY
Kwong
Hoi-Lun
HL
D003300:Copper / Q000737:chemistry*; D018360:Crystallography, X-Ray; D003521:Cyclopropanes / Q000737:chemistry*; D008024:Ligands; D046911:Macromolecular Substances / Q000138:chemical synthesis / Q000737:chemistry; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D011725:Pyridines / Q000737:chemistry*; D013237:Stereoisomerism
D003521:Cyclopropanes; D008024:Ligands; D046911:Macromolecular Substances; D009942:Organometallic Compounds; D011725:Pyridines; D003300:Copper