Synthesis of Pyrrolidines and Piperidines via Palladium-Catalyzed Coupling of Vinylic Halides and Olefinic Sulfonamides
作者:Richard C. Larock、Hoseok Yang、Steven M. Weinreb、R. Jason Herr
DOI:10.1021/jo00094a031
日期:1994.7
The palladium-catalyzed coupling of vinylic halides and olefinic sulfonamides affords good yields of 2-(1-alkenyl)pyrrolidine and -piperidine sulfonamides via vinylpalladium addition to the olefin, regioselective rearrangement to a pi-allylpalladium intermediate, and subsequent intramolecular nucleophilic displacement of palladium.
Lutete, Leopold Mpaka; Kadota, Isao; Shibuya, Akinori, Heterocycles, 2002, vol. 58, p. 347 - 357
作者:Lutete, Leopold Mpaka、Kadota, Isao、Shibuya, Akinori、Yamamoto, Yoshinori
DOI:——
日期:——
Intramolecular Hydroamination of Alkynes Catalyzed by Pd(PPh<sub>3</sub>)<sub>4</sub>/Triphenylphosphine under Neutral Conditions
作者:Gan B. Bajracharya、Zhibao Huo、Yoshinori Yamamoto
DOI:10.1021/jo050412w
日期:2005.6.1
The intramolecular hydroamination of alkynes tethered with amino group 1 in the presence of catalytic amounts of Pd(PPh3)(4) and PPh3 in benzene at 100 degrees C proceeded smoothly without the use of any additional acid source to afford five and six-membered nitrogen heterocycles 2 in good to excellent yields. A compulsory addition of carboxylic acid as a cocatalyst was not needed, and the reaction could be carried out under essentially neutral conditions.