81116-61-2Relevant academic research and scientific papers
92. Aromatic Nucleophilic Substitution. Part 1. Regiospecific Substitution of the Nitro Groups in 3,5-Dinitrophthalic-Acid Derivatives
Fischer, Walter,Kvita, Vratislav
, p. 846 - 853 (2007/10/02)
The regioselectivity of nucleophilic substitution of the nitro groups in 3,5-dinitrophthalic anhydrides and 3,5-dinitrophthalimides (Scheme) with a variety of nucleophiles (Nu(1-)) was studied.In all case, the 3-nitro group was selectively substituted.With excess of the same nucleophilic reagent or with other nucleophiles, the 5-nitro group could subsequently be replaced.
Thioxanthonecarboxylic acids and thioxanthonecarboxylic acid derivatives
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, (2008/06/13)
Novel thioxanthonecarboxylic acids and thioxanthonecarboxylic acid derivatives of the formula I STR1 in which Y is --COOH, --CO-halogen, --CN or a carboxylic acid ester, thioester or amide group and X, Z and W are as defined in the patent claim, are described. The compounds of the formula I in which Y is other than --CO--halogen are suitable as sensitizers for photo-crosslinkable polymers or as initiators for photo-polymerization of ethylenically unsaturated compounds or for photo-chemical crosslinking of polyolefins. The acid halides of the formula I are starting materials for the preparation of the corresponding nitriles and carboxylic acid esters, thioesters and amides.
3,5-Disubstituted phthalic acid imides, phthalic acids and phthalic acid anhydrides
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, (2008/06/13)
Novel compounds of the formula I or II STR1 are described, in which M1 and M2 individually are --OH or together are --O--, R is hydrogen, C1-20 -alkyl, C2-5 -alkenyl, C3-5 -alkynyl, C5-12 -cycloalkyl, benzyl, phenyl or toluyl, X is --NO2, --OR', --SR' or --SO2 R' and the (R')s independently of one another are C1-20 -alkyl, C3-5 -alkenyl, C3-5 -alkynyl, C2-4 -monohydroxyalkyl, C1-12 -halogenoalkyl, benzyl, C5-12 -cycloalkyl, phenyl, carboxyphenyl, halogenophenyl, nitrophenyl, alkyl- or alkoxy-phenyl each having 1-4 C atoms in the alkyl or alkoxy moieties, or acetylaminophenyl. The compounds (I) and compounds (II) in which M1 and M2 together are --O-- are suitable as sensitizers for photocrosslinkable polymers or as initiators for the photopolymerization of ethylenically unsaturated compounds or for the photochemical crosslinking of polyolefins.
