Beckmann Rearrangement in Liquid Sulfur Dioxide. IV. Syntheses of 1-Methyl-3,4-dihydro-isoquinoline and 9-Phenyl-phenanthridine
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چکیده
منابع مشابه
5-Phenyl-7,8-dihydro-1,3-dioxano[4,5-g]isoquinoline
In the title compound, C(16)H(13)NO(2), the two benzene rings make a dihedral angle of 55.5 (2)°. The crystal packing is stabilized by inter-molecular C-H⋯O hydrogen bonds and weak π-π stacking inter-actions [centroid-centroid distance = 3.595 (3)Å], linking the mol-ecules into ladders of inversion dimers.
متن کامل9-Chloro-1-methyl-7-phenyl-5,6-dihydro-13H-indolo[3,2-c]acridine
The title compound, C(26)H(19)ClN(2), is a 5,6-dihydro-13H-indolo[3,2-c]acridine prepared by condensation of a 2,3,4,9-tetra-hydro-1H-carbazol-1-one with 2-amino-benzophenone. The crystals undergo a destructive phase change upon cooling at varying temperatures between 270 and 200 K, depending on cooling rate and disturbance by vibration, thus indicating supercooling of the metastable room-tempe...
متن کاملCyclopropenium ion catalysed Beckmann rearrangement.
1-Chloro-2,3-diphenylcyclopropenium ion was found to be a very efficient organocatalyst (3 mol% loading) for liquid phase Beckmann rearrangement of various ketoximes to the corresponding amides/lactams within 2 h in acetonitrile at reflux temperature. This is the first example of the application of the cyclopropenium ion as a catalyst, which opens up a new aspect of the synthetic utility of aro...
متن کامل4-(4-Bromophenyl)-3-methyl-1-phenyl-6,7-dihydro-1H-pyrazolo[3,4-b]thieno[2,3-e]pyridine 5,5-dioxide
In the title compound, C(21)H(16)BrN(3)O(2)S, the pyrazole and pyridine rings are nearly coplanar, the dihedral angle between their planes being 3.17 (14)°. The 2,3-dihydro-thio-phene ring adopts an envelope conformation. The 4-bromo-phen-yl/pyridine ring and phen-yl/pyrazole rings form dihedral angles of 60.06 (9) and 33.49 (11)°, respectively. There is an intra-molecular C-H⋯N hydrogen bond. ...
متن کاملTRANSFORMATION OF 2-BENZOYLAMINO-1-(?-NAPHTHYL)PROPAN-1-OL INTO 4-METHYL-1-PHENYL BENZO[f] ISOQUINOLINE RATHER THAN ITS 3-SUBSTITUTED ISOMER
The necessary conditions to transform hydroxyamide (1) and 2-oxazolines (2, 3) into 3- or 4-methyl benzo[f] isoquinolines (4, 5) has been established. The mechanism of these reactions has been proposed claiming the existence of the protonated 2-oxazoline (6) and the styrylamides (7) as intermediates.
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1958
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.31.1003