A new method was developed for the synthesis of alpha-alkyl- and alpha,alpha-dialkyl-beta-phenyl-tryptamines based on alkylation of nitroalkanes with alpha-phenyl-nor-gramine.
Diastereoselective synthesis of (2S∗)-2-[(R∗)-1H-indol-3-yl(phenyl)methyl]-2,3-dihydro-1H-inden-1-one
摘要:
Double asymmetric induction in Michael reactions has been studied. Enantioselective alkylation of a cyclic ketone (1-indanone) with alpha-phenyl-nor-gramine was carried out. The relative configuration of (2S*)-2-[(R*)-1H-indol-3-yl(phenyl)methyl]-2,3-dihydro-1H-inden-1-one was established by X-ray diffraction. The relative configuration of (R*,R*,S*)- and (S*,R*,S*)-2-1H-indol-3-yl(phenyl)methyl]-2,3-diliydro-1H-inden-1-ols was established by H-1 NMR studies. (c) 2006 Elsevier Ltd. All rights reserved.
Substituted 1H-indoles, process for their preparation and duplicating and marking systems comprising them
申请人:STERLING DRUG INC.
公开号:EP0035775A2
公开(公告)日:1981-09-16
3 [ (Substituted-amino) (aryl or heteroaryl)methyl]- 1H-indoles which are useful as color-formers in pressure-sensitive carbonless duplicating systems and thermal marking systems are prepared by reacting 3-[(arylsulfonyl) (aryl or heteroaryl(methyl]-1H-indoles with amines or precursors thereof in the presence of a base.