Correction: A novel polymer containing phosphorus-nitrogen ligands for stabilization of palladium nanoparticles: An efficient and recyclable catalyst for Suzuki and Sonogashira reactions in neat water (Dalton Transactions (2015) 44 (14293-14303) DOI: 10.1039/C5DT01642H)

Article abstract of DOI:10.1039/c9dt90055a

The authors regret that the second step in Scheme 1 of the above mentioned paper was incorrect, this has been corrected below and the characterization supporting the identity of compound 2 is presented herein. This correction does not affect the discussion or conclusions of the original article. (Figure Presented). The 31P NMR spectrum of product 2 showed a chemical shift for 31P at 36.7 ppm (Fig. 1). The 1H NMR spectrum of compound 2 showed a single peak at 9.64 which is related to a phenolic proton (Fig. 1a). Adding a drop of D2O to the sample, resulted in removing the phenolic hydrogen signal at 9.6 ppm and confirmed that the compound has a phenolic proton (Fig. 2b). The presence of the hydroxyl group was also confirmed by FTIR showing a related peak at 3347 cm-1 (Fig. 3). The 1H NMR spectrum of the product shows three multiple signals at (5.7-5.8), (6.3-6.6), (7.5-7.7), and (7.8-8.0) ppm that may be coupled with the 31P nucleus. To investigate this issue, we compared the original 1H NMR spectrum with its 1H{31P} spectrum. Results indicated removal of the small splitting caused by the phosphorous group in the above mentioned area (Fig. 4). Procedure for the preparation of polymer 3. (Figure Presented). Acryloyl chloride (1 mmol, 0.08 mL) was added to a flask containing a solution of 2-aminophenol (1 mmol, 0.11 g) in dry THF (5 mL) at 0 °C under an argon atmosphere. Then, Et3N (1 mmol, 0.14 mL) was added dropwise at 0 °C and the mixture was stirred for 2 h at room temperature. Afterwards, the reaction mixture was filtered to separate the triethylammonium chloride salt produced. To the resulting solution, chlorodiphenylphosphine (1.1 mmol, 0.2 g) and Et3N (1 mmol, 0.14 mL) was added and the reaction was stirred for 24 h at 50 °C. Then, solvent was evaporated and the desired product was purified by plate chromatography. For polymerization of the obtained monomer, the phosphinite monomer (2) (5 mmol, 1.7 g) was dissolved in t-BuOH (5 mL) and AIBN (0.008 g, 0.5% w/w) was added to the mixture under argon protection. The mixture was stirred for 24 h at 70 °C under an argon atmosphere. Then, t-BuOH was evaporated and the obtained pale yellow solid was washed with H2O (10 mL) and hexane (30 mL) and dried in an oven for 24 h at 80 °C. (Figure Presented). The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.

Full text of DOI:10.1039/c9dt90055a

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CORRECTION
Correction: A novel polymer containing
phosphorus–nitrogen ligands for stabilization
of palladium nanoparticles: an efficient and
recyclable catalyst for Suzuki and Sonogashira
reactions in neat water
Cite this: DOI: 10.1039/c9dt90055a
M. Gholinejad,*a F. Hameda and P. Bijib
Correction for ‘A novel polymer containing phosphorus–nitrogen ligands for stabilization of palladium
nanoparticles: an efficient and recyclable catalyst for Suzuki and Sonogashira reactions in neat water’ by
M. Gholinejad, et al., Dalton Trans., 2015, 44, 14293–14303.
DOI: 10.1039/c9dt90055a
rsc.li/dalton
The authors regret that the second step in Scheme 1 of the above mentioned paper was incorrect, this has been corrected below
and the characterization supporting the identity of compound 2 is presented herein. This correction does not affect the dis-
cussion or conclusions of the original article.
Scheme 1 Steps for the preparation of polymeracrylamide containing phosphorous ligand (3).
The 31P NMR spectrum of product 2 showed a chemical shift for 31P at 36.7 ppm (Fig. 1).
1
The H NMR spectrum of compound 2 showed a single peak at 9.64 which is related to a phenolic proton (Fig. 1a). Adding a
drop of D2O to the sample, resulted in removing the phenolic hydrogen signal at 9.6 ppm and confirmed that the compound has
a phenolic proton (Fig. 2b). The presence of the hydroxyl group was also confirmed by FTIR showing a related peak at 3347 cm−1
(Fig. 3).
1
The H NMR spectrum of the product shows three multiple signals at (5.7–5.8), (6.3–6.6), (7.5–7.7), and (7.8–8.0) ppm that
may be coupled with the 31P nucleus. To investigate this issue, we compared the original 1H NMR spectrum with its 1H{31P} spec-
trum. Results indicated removal of the small splitting caused by the phosphorous group in the above mentioned area (Fig. 4).
Procedure for the preparation of polymer 3.
aDepartment of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), P. O. Box 45195-1159, Gavazang, Zanjan 45137-6731, Iran.
E-mail: gholinejad@iasbs.ac.ir
bNanotech Research, Innovation and Incubation Center, PSG Institute of Advanced Studies, Coimbatore-641 004, India
This journal is © The Royal Society of Chemistry 2019
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Fig. 1 31P NMR of 2-((1-((diphenylphosphino)oxy)allylidene)amino)phenol.
Fig. 2 1H NMR of 2-((1-((diphenylphosphino)oxy)allylidene)amino)phenol in CDCl3 and in the presence of D2O.
Acryloyl chloride (1 mmol, 0.08 mL) was added to a flask containing a solution of 2-aminophenol (1 mmol, 0.11 g) in dry THF
(5 mL) at 0 °C under an argon atmosphere. Then, Et3N (1 mmol, 0.14 mL) was added dropwise at 0 °C and the mixture was
stirred for 2 h at room temperature. Afterwards, the reaction mixture was filtered to separate the triethylammonium chloride salt
produced. To the resulting solution, chlorodiphenylphosphine (1.1 mmol, 0.2 g) and Et3N (1 mmol, 0.14 mL) was added and the
reaction was stirred for 24 h at 50 °C. Then, solvent was evaporated and the desired product was purified by plate chromato-
graphy. For polymerization of the obtained monomer, the phosphinite monomer (2) (5 mmol, 1.7 g) was dissolved in t-BuOH
(5 mL) and AIBN (0.008 g, 0.5% w/w) was added to the mixture under argon protection. The mixture was stirred for 24 h at 70 °C
under an argon atmosphere. Then, t-BuOH was evaporated and the obtained pale yellow solid was washed with H2O (10 mL) and
hexane (30 mL) and dried in an oven for 24 h at 80 °C.
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Fig. 3 FT-IR spectrum of 2-((1-((diphenylphosphino)oxy)allylidene)amino)phenol.
Fig. 4 Expanded 1H NMR (a) and 1H{31P}(b) of 2-((1-((diphenylphosphino)oxy)allylidene)amino)phenol.
The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.
This journal is © The Royal Society of Chemistry 2019
Dalton Trans.