201735-31-1Relevant articles and documents
Binuclear Pd(I)-Pd(I) Catalysis Assisted by Iodide Ligands for Selective Hydroformylation of Alkenes and Alkynes
Zhang, Yang,Torker, Sebastian,Sigrist, Michel,Bregovi?, Nikola,Dydio, Pawe?
supporting information, p. 18251 - 18265 (2020/11/02)
Since its discovery in 1938, hydroformylation has been thoroughly investigated and broadly applied in industry (>107 metric ton yearly). However, the ability to precisely control its regioselectivity with well-established Rh- or Co-catalysts has thus far proven elusive, thereby limiting access to many synthetically valuable aldehydes. Pd-catalysts represent an appealing alternative, yet their use remains sparse due to undesired side-processes. Here, we report a highly selective and exceptionally active catalyst system that is driven by a novel activation strategy and features a unique Pd(I)-Pd(I) mechanism, involving an iodide-assisted binuclear step to release the product. This method enables β-selective hydroformylation of a large range of alkenes and alkynes, including sensitive starting materials. Its utility is demonstrated in the synthesis of antiobesity drug Rimonabant and anti-HIV agent PNU-32945. In a broader context, the new mechanistic understanding enables the development of other carbonylation reactions of high importance to chemical industry.
Iron powder-cui cooperative catalytic system in sonogashira cross-coupling reaction
Tran, Ngoc Thang,Cho, Chan Sik,Sohn, Ho-Sang,Shim, Sang Chul
experimental part, p. 1080 - 1082 (2011/12/22)
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Palladium-catalyzed desulfitative Sonogashira-Hagihara cross-couplings of arenesulfonyl chlorides and terminal alkynes
Dubbaka, Srinivas Reddy,Vogel, Pierre
, p. 1793 - 1797 (2007/10/03)
For the first time, conditions have been found for the palladium-catalyzed desulfitative carbon-carbon cross-coupling of arenesulfonyl chlorides with aryl- and alkylacetylenes. Pd2(dba)3/P(t-Bu)3 and CuI provide the best c