In:
ChemistryOpen, Wiley, Vol. 8, No. 2 ( 2019-02), p. 166-172
Abstract:
A series of ionic (mono‐/di‐)phosphines ( L2 , L4 , and L6 ) with structural similarity and their corresponding neutral counterparts ( L1 , L3 , and L5 ) were applied to modulate the catalytic performance of RuCl 3 ⋅ 3H 2 O. With the involvement of the ionic diphosphine ( L4 ), in which the two phosphino‐fragments were linked by butylene group, RuCl 3 ⋅ 3H 2 O with advantages of low cost, robustness, and good availability was found to be an efficient and recyclable catalyst for the alkoxycarbonylation of aryl halides. The L4 ‐based RuCl 3 ⋅ 3H 2 O system corresponded to the best conversion of PhI (96 %) along with 99 % selectivity to the target product of methyl benzoate as well as the good generality to alkoxycarbonylation of different aryl halides (ArX, X=I and Br) with alcohols MeOH, EtOH, i ‐PrOH and n ‐BuOH. The electronic and steric effects of the applied phosphines, which were analyzed by the 31 P NMR for 1 J 31 P‐ 77 Se 1 J measurement and single‐crystal X‐ray diffraction, were carefully co‐related to the performance RuCl 3 ⋅ 3H 2 O catalyst. In addition, the L4 ‐based RuCl 3 ⋅ 3H 2 O system could be recycled successfully for at least eight runs in the ionic liquid [Bmim]PF 6 .
Type of Medium:
Online Resource
ISSN:
2191-1363
,
2191-1363
DOI:
10.1002/open.201800266
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
2655605-4
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