Phosphorus, Sulfur and Silicon and the Related Elements p. 1883 - 1891 (2004)
Update date:2022-08-11
Topics:
Harizi, Abdallah
Zantour, Hedi
Fostedil (diethyl 4-(benzothiazol-2-yl) benzylphosphonate) 7 has been synthesized efficiently by treatment of 2-(4-bromomethylphenyl) benzothiazole 6 with triethylphosphite. The latter (6) has been prepared by bromation of benzothiazole 3c. N-acylimidates 1(a-d) react with 2-aminobenzenethiol 2 to lead to the corresponding benzothiazoles 3(a-d) after elimination of primary amide 5. The structure of these products have been unequivocally confirmed by means of IR, 1H, 13C, and 31P NMR spectroscopy and mass spectra.
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