5119-88-0Relevant articles and documents
Diethylzinc: A simple and efficient catalyst for the swift hydroamination at room temperature
Pissarek, Jens-Wolfgang,Schlesiger, David,Roesky, Peter W.,Blechert, Siegfried
scheme or table, p. 2081 - 2085 (2009/12/28)
Diethylzinc and dimethylanilinium tetrakis(pentafluorophenyl)borate were found to catalyze hydroaminations at room temperature in high efficiency and very short reaction times. The reactivity of the proposed cationic zinc species, which is assumed to cata
Nonracemic betti base as a new chiral auxiliary: Application to total syntheses of enantiopure (2S,6R)-dihydropinidine and (2S,6R)-isosolenopsins
Wang, Xinyan,Dong, Yanmei,Sun, Jianwei,Xu, Xuenong,Li, Rui,Hu, Yuefei
, p. 1897 - 1900 (2007/10/03)
(Chemical Equation Presented) Total syntheses of enantiopure alkaloidal natural products (2S,6R)-dihydropinidine (as hydrochloride) and (2S,6R)-isosolenopsins (as hydrochlorides) were achieved in four steps and in 80-82% total yields by using a synthetic strategy of the formation-cleavage of 1,3-oxazinane. (S)-Betti base was proved to be an excellent chiral auxiliary and a novel Pd/C catalyzed N-debenzylation straightforward to amine hydrochloride was developed in the presence of CH2Cl2.
Facile diastereoselective reactions of chiral 1,3-oxazolidines with grignard reagents; asymmetric syntheses of 2-substituted and 2,6-disubstituted piperidines
Poerwono, Hadi,Higashiyama, Kimio,Yamauchi, Takayasu,Takahashi, Hiroshi
, p. 385 - 400 (2007/10/03)
(S)- and (R)-2-Phenylpiperidines, (S)- and (R)-2-methylpiperidines, meso- and (2R, 6R)-2,6-diphenylpiperidines, and meso- and (25, 65)-2,6-dimethylpiperidines were synthesized asymmetrically starting from the diastereoselective addition of Grignard reagents to chiral 1,3-oxazolidines, converting of 1-aza-4-oxabicyclo[4.3.0]nonane derivatives as pivotal intermediates.