Chelation-controlled facially selective cyclocondensation reactions of chiral alkoxy aldehydes: syntheses of a mouse androgen and of a carbon-linked disaccharide
Catalysis by lithium perchlorate in dichloromethane: Diels-Alder reactions and 1,3-Claisen rearrangements
作者:Manfred T. Reetz、Andreas Gansäuer
DOI:10.1016/s0040-4020(01)87187-8
日期:1993.7
Lithium perchlorate suspended in dichloromethane is an efficient catalyst (4 – 25 mol-%) for stereoselective Diels-Alder, hetero-Diels-Alder and regioselective 1,3-Claisen rearrangements; this process is milder, safer and environmentally less precarious than the use of 1 – 5 molar solution of LiClO4 in ether described previously in the literature.
Diastereofacial control in the Lewis acid catalyzed cyclocondensation reaction of aldehydes with activated dienes: a synthesis of the Mus musculus pheromone
作者:Samuel J. Danishefsky、William H. Pearson、Daniel F. Harvey
DOI:10.1021/ja00320a050
日期:1984.4
Synthese de cette pheromone qui correspond a l'exo-deshydrobrevicomine, a partir de benzyloxy-2 butanal et de bis-trimethylsiloxy-2,4 pentadiene-1,3 en presence de MgBr 2
合成这些 de cette 信息素 qui 对应于 l'exo-deshydrobrevicomine, a partir de benzyloxy-2 butanal et de bis-trimethylsiloxy-2,4 pentadiene-1,3 en存在 de MgBr 2
DANISHEFSKY, S. J.;PEARSON, W. H.;HARVEY, D. F.;MARING, C. J.;SPRINGER, J+, J. AMER. CHEM. SOC., 1985, 107, N 5, 1256-1268
作者:DANISHEFSKY, S. J.、PEARSON, W. H.、HARVEY, D. F.、MARING, C. J.、SPRINGER, J+