Abstract
| - The reactions of aryl aldehydes with styrene derivatives, mediated by various boron Lewis acids,were investigated. 1,3-Dihalo-1,3-diarylpropanes were obtained in high yields with boron trihalides,while 3-chloro-1,3-diarylpropanols were obtained in good to excellent yields with phenylborondichloride. Reactions involving nonenolizable aliphatic aldehydes, trans-cinnamaldehyde, andβ-substituted styrenes were also investigated for the first time.
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