Reaction of benzene solutions of arylacetylenes with 1 equiv. of chloroacetone and 2 equiv. of Et3N, using a mixture of (PPh3)4 Pd and CuJ as catalyst, affords 1,4-diaryl-butadiynes in very good yields. Under similar reaction conditions aliphatic 1-alkynes yield mixtures of simmetrically disubstituted 1,4-dialkyl-1,3-butadiynes and of 3-alkyl-4-(1-alkynyl)-hexa-1,5-diyn-3-enes.
Autori interni: | ||
Autori: | ROSSI R; CARPITA A; BIGELLI C | |
Titolo: | A palladium-promoted route to 3-alkyl-4-(1-alkynyl)hexa-1,5-dyn-3-enes and/or 1,3-diynes | |
Anno del prodotto: | 1985 | |
Digital Object Identifier (DOI): | 10.1016/S0040-4039(00)61928-7 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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