Key Factors for High Diastereo- and Enantioselectivity of Umpolung Cyclizations of Aldehyde-Containing Allylpalladium Intermediates
作者:Hirokazu Tsukamoto、Ayumu Kawase、Hirotaka Omura、Takayuki Doi
DOI:10.1246/bcsj.20190167
日期:2019.10.15
Two palladium/chiral diphosphine-catalyzed umpolung cyclizations of aldehyde-containing allylic acetates and allenes with arylboronic acid are fully investigated to establish key factors in their h...
Enantioselective nickel-catalyzed arylative and alkenylative intramolecular 1,2-allylations of tethered allene–ketones
作者:Riccardo Di Sanza、Thi Le Nhon Nguyen、Naeem Iqbal、Stephen P. Argent、William Lewis、Hon Wai Lam
DOI:10.1039/c9sc05246a
日期:——
Chiral tertiary-alcohol-containing aza- and carbocycles are produced in high diastereo- and enantioselectivities by the nickel-catalyzed reaction of tethered allene–ketones with (hetero)arylboronic acids or potassium vinyltrifluoroborate.
Palladium-Catalyzed Tandem Cyclization of Allenyl-Aldehydes and -Ketones with Aryl Iodides and Bu<sub>3</sub>SnSnBu<sub>3</sub>
作者:Young-Hwan Ha、Suk-Ku Kang
DOI:10.1021/ol025557t
日期:2002.4.1
[GRAPHICS]The arylative cyclization of allenyl-aidehydes with aryl iodides and hexa-n-butyldistannane to form substituted cyclopentanols and cyclohexanols by tandem palladium-catalyzed carbostannylation and allylation was achieved under mild conditions.
Palladium−Indium-Mediated Arylative Cyclization of Allenyl-Aldehydes and -Ketones
The arylative cyclization of allenyl-aldehydes and -ketones to form homoallylic cyclopentanols and cyclohexanols by the palladium-catalyzed and indium-mediated Babier allylation is described.
cis-Stereoselective nickel-catalyzed cyclization/alkylation and arylation reactions of allenyl-aldehydes and -ketones with organozinc reagentsElectronic supplementary information (ESI) available: typical procedures, NMR-data, and X-ray data. See http://www.rsc.org/suppdata/cc/b2/b207620a/
作者:Suk-Ku Kang、Seok-Keun Yoon
DOI:10.1039/b207620a
日期:2002.11.4
Highly stereoselective alkylative and arylative cyclization reactions of allenyl-aldehydes and -ketones with organozincreagents occur efficiently in the presence of catalytic Ni(COD)2 to afford cis-fused homoallylic cyclopentanols.