OLEFIN FORMATION VIA N,N,N′,N′-TETRAMETHYLDIAMIDES OF 1,2-DIARYL-2-HYDROXYETHANEPHOSPHONIC ACIDS IN ACIDIC MEDIA

Jordanka Petrova Faculty of Chemistry, University of Sofia, 1 Anton Ivanov Av., 1126, Sofia, Bulgaria

Marko Kirilov Faculty of Chemistry, University of Sofia, 1 Anton Ivanov Av., 1126, Sofia, Bulgaria

Snejana Momchilova Faculty of Chemistry, University of Sofia, 1 Anton Ivanov Av., 1126, Sofia, Bulgaria

Krassimir Kossev Faculty of Chemistry, University of Sofia, 1 Anton Ivanov Av., 1126, Sofia, Bulgaria

Abstract

The olefin formation via the erythro-N,N,N′N′-tetramethyldiamides of 1,2-diaryl-2-hydroxyethane-phosphonic acids 3, 4 in the presence of aqueous hydrochloric acid proceeds not stereospecifically, while in ethanolic solution of hydrochloric acid (Z)-stereospecific olefin formation predominantly takes place. The mechanism of the elimination process is discussed.

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OLEFIN FORMATION VIA N,N,N′,N′-TETRAMETHYLDIAMIDES OF 1,2-DIARYL-2-HYDROXYETHANEPHOSPHONIC ACIDS IN ACIDIC MEDIA

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OLEFIN FORMATION VIA N,N,N′,N′-TETRAMETHYLDIAMIDES OF 1,2-DIARYL-2-HYDROXYETHANEPHOSPHONIC ACIDS IN ACIDIC MEDIA

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