SYNTHESE VON 2,4-BIS(DIALKYLAMINO)PYRYLIUMSALZEN AUS 2-ACYL-1-CHLOR-ENAMINEN

DOI: 10.1016/S0040-4039(00)98698-2

Source and publish data:

Tetrahedron Letters p. 3963 - 3966 (1985)

Update date:2022-08-04

Topics:

Authors:

Schroth,Werner

Spitzner, Roland

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Article abstract of DOI:10.1016/S0040-4039(00)98698-2

2,4-Bis(dialkylamino)pyrylium salts 3 are readily available by treatment of 2-acyl-1-chloro-enamines 2 with HCl at elevated temperature.The synthesis involves protolytic displacement of one acyl group in the primaryly formed cyclisation product.An independent and stepwise access, starting from 2, is described.

Full text of DOI:10.1016/S0040-4039(00)98698-2

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