Goosen, Andre; Hoffman, Eric; Taljaard, Benjamin, Journal of the Chemical Society. Perkin transactions I, 1994, # 1, p. 41 - 44
作者:Goosen, Andre、Hoffman, Eric、Taljaard, Benjamin
DOI:——
日期:——
A New Entry to the Stereoselective Introduction of an Ethynyl Group by a Radical Reaction: Synthesis of the Potential Antimetabolite 2′-Deoxy-2′-C-ethynyluridine
JOSHI, N. N.;SREBNIK, M., J. CHROMATOGR., 462,(1989) C. 458-460
作者:JOSHI, N. N.、SREBNIK, M.
DOI:——
日期:——
Ni‐Catalyzed Linearizable Cyclization/Coupling with Detachable Silicon‐Oxygen Linker: Access to 1,2‐Oxasilolanes, 3‐Hydroxysilanes and 4‐Arylalkanols
作者:Margaret G. Lakomy、Majji Shankar、Ava C. Del Rio、Ramesh Giri
DOI:10.1002/anie.202404679
日期:2024.6.10
We disclose a Ni‐catalyzed cyclization/alkylmetal interception reaction in which products are readily linearized to permit regiodefined alkene dicarbofunctionalization. This method offers a convenient route to access 1,2‐oxasilolane heterocycles, 3‐hydroxysilanes and 4‐arylalkanols with the formation of C(sp3)‐C(sp3) bonds at primary and secondary alkyl carbon centers. In this reaction, a silicon‐oxygen (Si‐O) bond functions as a detachable linker that can be delinked with several hydride, alkyl, aryl and vinyl nucleophiles to create profusely functionalized 3‐hydroxysilanes. A silicon motif in the cyclic C(sp3)‐Si‐O construct in 1,2‐oxasilolane heterocycles can also be selectively deleted by Pd‐catalyzed hydrodesilylation affording Si‐ablated linear alcohol products reminiscent of vicinal ethylene dicarbofunctionalization with C(sp3) and C(sp2) carbon sources.