Synthesis p. 515 - 518 (1989)
Update date:2022-08-05
Topics:
Greif, D.
Kropfgans, F.
Pulst, M.
Weissenfels, M.
2-Alkylthiopyrylium salts are available in good yields via Aldol condensation reaction of β-chlorovinylaldehydes (carbonyl component) with acetone or α-methylene ketones (methylene component) followed by nucleophilic substitution reaction of the chlorine atom in the 4-acyl-1-chloro-1,3-butadienes by means of sodium sulfide and further cyclization of the resulting 4-acyl-1-mercapto-1,3-butadienes.
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