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Journal articles
Pd-Catalysed Direct Arylation of Heteroaromatics Using (Poly)halobenzene-sulfonyl Chlorides as Coupling Partners: One Step Access to (Poly)halo-Substituted Bi(hetero)aryls
Abstract : The reactivity of (poly)halo-substituted benzenesulfonyl chlorides for Pd-catalyzed desulfitative arylation was investigated. 2-, 3- and 4-bromobenzenesulfonyl chlorides react nicely to afford arylated heteroarenes in moderate to high yields without cleavage of the C-Br bonds, allowing further transformations. A minor influence upon reaction yeilds was found to be exerted by the bromo substituent on the benzene ring. Even 4-iodobenzenesulfonyl chloride, di- and tri-bromobenzenesulfonyl chlorides were successfully coupled with a range of heteroarenes without cleavage of the C-Br or C-I bonds and very regioselective arylations were obsd. in all cases. The reaction was also found to tolerate bromo substituents on the heteroarene.
https://hal-univ-rennes1.archives-ouvertes.fr/hal-01163648
Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Monday, June 15, 2015 - 11:22:15 AM
Last modification on : Friday, December 10, 2021 - 3:52:09 PM
Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Monday, June 15, 2015 - 11:22:15 AM
Last modification on : Friday, December 10, 2021 - 3:52:09 PM
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