1-Iodo-4-acetoxybutane is a useful 4 carbon synthon which reacts selectively with Grignards under copper catalysis. The immediate products are converted to bromides.
1-Iodo-4-acetoxybutane is a useful 4 carbon synthon which reacts selectively with Grignards under copper catalysis. The immediate products are converted to bromides.
allograft. A phenylring was introduced into the alkyl chain of the lead compound 3, which is an immunosuppressive agent structurally simplified from myriocin (1, ISP-I) via compound 2. The potency of the various compounds was dependent upon the position of the phenylring within the alkyl side chain. The most suitable length between the quaternary carbon atom and the phenylring was two carbon atoms
Preparation, Structure, and Reactivity of Nonstabilized Organoiron Compounds. Implications for Iron-Catalyzed Cross Coupling Reactions
作者:Alois Fürstner、Rubén Martin、Helga Krause、Günter Seidel、Richard Goddard、Christian W. Lehmann
DOI:10.1021/ja801466t
日期:2008.7.1
elimination reduce FeX n ( n = 2, 3) to clusters of the formal composition [Fe(MgX) 2] n . The behavior of these intermetallic species can be emulated by structurally well-defined lithium ferrate complexes of the type [Fe(C 2H 4) 4][Li(tmeda)] 2 ( 8), [Fe(cod) 2][Li(dme)] 2 ( 9), [CpFe(C 2H 4) 2][Li(tmeda)] ( 7), [CpFe(cod)][Li(dme)] ( 11), or [Cp*Fe(C 2H 4) 2][Li(tmeda)] ( 14). Such electron-rich
Alkylsilicates were engaged under photoredox/nickel dual catalysis conditions with alkyl halides for the first time. The C(sp3)–C(sp3) cross-coupling products were obtained in moderate yields and were accompanied by the homocoupling products of the alkyl halide derivatives. These promising findings are strongly suggestive of the high synthetic potential of the dual catalytic approach for the forging of