Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Cyclopentadienyl complexes electrophilic addition

A one-step chemical procedure (i, in the scheme) has proved valuable. Thus cholesterol and its oxidation product, dehydroisoandrosterone have been selectively aromatised by reaction with the electrophilic ruthenium complex (Cp Ru ), t -cyclopentadienyl Ru. obtained by protonation in THF of [Cp Ru(OMe)j2 (1 mol) with triflic acid, CF3SO3H (2 mol). The addition of cholesterol (2 mol) in THF during 40 hours at 120°C (or in dichloromethane at 90 C) afforded estrone in 48% yield with evolution of methane (ref. 114). [Pg.592]

The third class of cationic iron reagents is synthesized by the addition product of an electrophile onto Qrj allyl)Fp complexes (Fp = y cyclopentadienyl dicarbonyl iron) a dihapto cationic complex is thus obtained. [Pg.121]

See other pages where Cyclopentadienyl complexes electrophilic addition is mentioned: [Pg.318]    [Pg.376]    [Pg.113]    [Pg.380]    [Pg.947]    [Pg.154]    [Pg.312]    [Pg.373]    [Pg.3291]    [Pg.4042]    [Pg.4158]    [Pg.339]    [Pg.206]    [Pg.947]    [Pg.947]    [Pg.3290]    [Pg.4041]    [Pg.4157]    [Pg.72]    [Pg.745]    [Pg.166]    [Pg.417]    [Pg.155]    [Pg.248]    [Pg.575]    [Pg.577]    [Pg.585]    [Pg.378]   
See also in sourсe #XX -- [ Pg.224 ]



SEARCH



Complexes cyclopentadienyls

Complexing additives

Cyclopentadienyl complex

Cyclopentadienyl complexe

© 2024 chempedia.info