Tetrahedron Letters p. 523 - 526 (1985)
Update date:2022-08-05
Topics:
Rossi, Renzo
Carpita, Adriano
Bigelli, Clara
Reaction of benzene solutions of arylacetylenes with 1 equiv. of chloroacetone and 2 eqiuv. of Et3N, using a mixture of (PPh3)4Pd 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.
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(1962)
