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A New Reaction of Aryl Aldehydes with Aryl Acetylenes in the Presence of Boron Trihalides

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journal contribution
posted on 2002-04-06, 00:00 authored by George W. Kabalka, Zhongzhi Wu, Yuhong Ju
The reactions of aryl aldehydes with 2 equiv of arylacetylenes in the presence of boron trichloride yield (E,Z)-1,3,5-triaryl-1,5-dichloro-1,4-pentadienes. Reactions carried out in the presence of boron tribromide generate the corresponding (Z,Z)-1,3,5-triaryl-1,5-dibromo-1,4-pentadienes.

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