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Fries migration

C-2 of the indole ring or undergo photo-Fries migration followed by cyclization... [Pg.286]

Photo-Fries migration has been reported for the sulphonate ester (316) to give (317) A homolytic cleavage-recombination mechanism akin to the photo-Fries rearrangement of sulphonamldes may... [Pg.268]

Kulshrestha, S. K., Dureja, R, and Mukeijee, S. K., Photo-induced reactions. IV. Studies on photo-Fries migration of some coumarins, Ind. J. Chem., 23B, 1064,1984. [Pg.825]

The mechanism of the Fries reaction is not known with certainty. One mechanism regards it as a true intramolecular rearrangement in which the acyl group migrates directly from the oxygen atom to the carbon atoms of the ring. Another scheme postulates that the ester is cleaved by the reagent... [Pg.664]

When acylated arylamines are photolyzed, migration of an acyl group takes place" in a process that resembles the photo-Fries reaction (11-30). [Pg.730]

Maffucci T, Cooke FT, Foster FM, Traer CJ, Fry MJ, Falasca M. Class II phosphoinositide 3-kinase defines a novel signaling pathway in cell migration. J Cell Biol 2005 169(5) 789-799. [Pg.68]

Photochemical treatment of an N-acylimidazole results in a 1,2-shift (N-C migration) of the acyl group to give a mixture of 2- and 5-acylimidazoles (photo-Fries products) [1],[2]... [Pg.406]

In addition, recent studies of amides include the 1,3-acyl migration of enamides to obtain the enamines through a photo-Fries like mechanism (equations 103160 and 104161). [Pg.724]

Compound 217 when irradiated with a high-pressure mercury lamp takes another course, as Constenla has found. In the first step the acetyl group migrates to position 2, but the stereochemistry of this photoproduct 218 has not yet been determined. This step is analogous to a photochemical Fries rearrangement. In the next step the phosphorus residue is split off and 2.4.6-triphenyltoluene 219 can be isolated. [Pg.127]

Studies of Nuclear-Waste Migration in Geologic Media," p. 34, M. G. Seitz, P. G. Rickert, S. M. Fried, A. M. Friedman, and M. J. Steindler, Argonne National Laboratory Report ANL-78-8, 1978. [Pg.200]

Photo-Fries rearrangement-. Photo-Fries rearrangement involve migra-fSi of a group across a double bond (1,3 migration) in structures of the Plowing type ... [Pg.231]

The Fries rearrangement has been discussed (420R(1)342) and some attention has been paid to its mechanism (B-69MI22402). It is sufficient here to note that both ortho and para migration of the acyl moiety takes place and accordingly some diminution in the yield of chromanone is to be expected. [Pg.850]

See other pages where Fries migration is mentioned: [Pg.493]    [Pg.88]    [Pg.200]    [Pg.317]    [Pg.493]    [Pg.88]    [Pg.200]    [Pg.317]    [Pg.59]    [Pg.339]    [Pg.726]    [Pg.200]    [Pg.534]    [Pg.67]    [Pg.94]    [Pg.209]    [Pg.222]    [Pg.222]    [Pg.321]    [Pg.124]    [Pg.128]    [Pg.525]    [Pg.556]    [Pg.190]    [Pg.193]    [Pg.195]    [Pg.197]    [Pg.200]    [Pg.200]    [Pg.61]    [Pg.204]    [Pg.417]    [Pg.632]    [Pg.473]    [Pg.474]    [Pg.473]    [Pg.474]   
See also in sourсe #XX -- [ Pg.1068 ]

See also in sourсe #XX -- [ Pg.317 ]



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