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- W2012172258 abstract "In contrast to the analogous ylidenemalononitriles, it is found that xanthen-, thioxanthen- and fluoren-9-ylidene cyanoacetates react with organomagnesium halides to give 1,4-adducts regardless of the nature of the Grignard reagent and its steric requirements. Apparently the reaction proceeds through the intermediate formation of a cyclic transition state of lower energy in the case of cyano esters than in the case of malononitriles. The fluorenyl cyano esters (2b-e,g) react with o-phenylenediamine at 240° affording the benz-imidazolyl(fluorenyl)acetonitriles (10a-e), whereas, at lower temperature, the intermediate cyano anilides (11a-e) are obtained which cyclize readily to the corresponding benzimidazoles." @default.
- W2012172258 created "2016-06-24" @default.
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- W2012172258 date "1978-01-03" @default.
- W2012172258 modified "2023-09-27" @default.
- W2012172258 title "ChemInform Abstract: CYANO ESTERS AND MALONONITRILES. V. CYANO(FLUORENYL)ACETIC ESTERS, HYDROXY NITRILES AND BENZIMIDAZOLYLACETONITRILES" @default.
- W2012172258 cites W2949595400 @default.
- W2012172258 doi "https://doi.org/10.1002/chin.197801208" @default.
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