By the same authors

From the same journal

From the same journal

Catalytic behaviour in the ring-opening polymerisation of organoaluminiums supported by bulky heteroscorpionate ligands

Research output: Contribution to journalArticle

Standard

Catalytic behaviour in the ring-opening polymerisation of organoaluminiums supported by bulky heteroscorpionate ligands. / Castro-Osma, Jose A; Alonso-Moreno, Carlos; Lara-Sánchez, Agustín; Otero, Antonio; Fernández-Baeza, Juan; Sánchez-Barba, Luis F; Rodríguez, Ana M.

In: Dalton Transactions, Vol. 44, No. 27, 02.07.2015, p. 12388-12400.

Research output: Contribution to journalArticle

Harvard

Castro-Osma, JA, Alonso-Moreno, C, Lara-Sánchez, A, Otero, A, Fernández-Baeza, J, Sánchez-Barba, LF & Rodríguez, AM 2015, 'Catalytic behaviour in the ring-opening polymerisation of organoaluminiums supported by bulky heteroscorpionate ligands', Dalton Transactions, vol. 44, no. 27, pp. 12388-12400. https://doi.org/10.1039/c4dt03475a

APA

Castro-Osma, J. A., Alonso-Moreno, C., Lara-Sánchez, A., Otero, A., Fernández-Baeza, J., Sánchez-Barba, L. F., & Rodríguez, A. M. (2015). Catalytic behaviour in the ring-opening polymerisation of organoaluminiums supported by bulky heteroscorpionate ligands. Dalton Transactions, 44(27), 12388-12400. https://doi.org/10.1039/c4dt03475a

Vancouver

Castro-Osma JA, Alonso-Moreno C, Lara-Sánchez A, Otero A, Fernández-Baeza J, Sánchez-Barba LF et al. Catalytic behaviour in the ring-opening polymerisation of organoaluminiums supported by bulky heteroscorpionate ligands. Dalton Transactions. 2015 Jul 2;44(27):12388-12400. https://doi.org/10.1039/c4dt03475a

Author

Castro-Osma, Jose A ; Alonso-Moreno, Carlos ; Lara-Sánchez, Agustín ; Otero, Antonio ; Fernández-Baeza, Juan ; Sánchez-Barba, Luis F ; Rodríguez, Ana M. / Catalytic behaviour in the ring-opening polymerisation of organoaluminiums supported by bulky heteroscorpionate ligands. In: Dalton Transactions. 2015 ; Vol. 44, No. 27. pp. 12388-12400.

Bibtex - Download

@article{e94acdf800ad4a1fb016b514eeb679e3,
title = "Catalytic behaviour in the ring-opening polymerisation of organoaluminiums supported by bulky heteroscorpionate ligands",
abstract = "A series of alkyl organoaluminium complexes based on bulky heteroscorpionate ligands were designed as catalysts for the ring-opening polymerisation of cyclic esters. Thus, the treatment of AlX3 (X = Me, Et) with bulky acetamide or thioacetamide heteroscorpionate ligands nbptamH () [nbptamH = N-naphthyl-2,2-bis(3,5-dimethylpyrazol-1-yl)thioacetamide], fbpamH () [fbpamH = N-fluorenyl-2,2-bis(3,5-dimethylpyrazol-1-yl)acetamide], ptbptamH () [ptbptamH = N-phenyl-2,2-bis(3,5-di-tert-butylpyrazol-1-yl)thioacetamide], ntbptamH () [ntbptamH = N-naphthyl-2,2-bis(3,5-di-tert-butylpyrazol-1-yl)thioacetamide], ptbpamH () [ptbpamH = N-phenyl-2,2-bis(3,5-di-tert-butylpyrazol-1-yl)acetamide] and (S)-mtbpamH () [(S)-mtbpamH = (S)-(-)-N-α-methylbenzyl-2,2-bis(3,5-di-tert-butylpyrazol-1-yl)acetamide] for 1 hour at 0 °C afforded the dialkyl aluminium complexes [AlX2{κ(2)-nbptam}] (X = Me , Et ), [AlX2{κ(2)-fbpam}] (X = Me , Et ), [AlX2{κ(2)-ptbptam}] (X = Me , Et ), [AlX2{κ(2)-ntbptam}] (X = Me , Et ), [AlX2{κ(2)-ptbpam}] (X = Me , Et ) and [AlX2{κ(2)-(S)-mtbpam}] (X = Me , Et ). The structures of the complexes were determined by spectroscopic methods and the X-ray crystal structure of was also established. The alkyl-containing aluminium complexes can act as efficient single-component initiators for the ring-opening polymerisation of ε-caprolactone and rac-lactide. The polymerisations are living, as evidenced by the narrow polydispersities of the isolated polymers and the linear nature of the number average molecular weight versus conversion plot. Finally, a comparative study of ring-opening polymerisation for new bulky heteroscorpionate aluminium initiators and the less congested aluminium analogues is reported.",
author = "Castro-Osma, {Jose A} and Carlos Alonso-Moreno and Agust{\'i}n Lara-S{\'a}nchez and Antonio Otero and Juan Fern{\'a}ndez-Baeza and S{\'a}nchez-Barba, {Luis F} and Rodr{\'i}guez, {Ana M}",
year = "2015",
month = "7",
day = "2",
doi = "10.1039/c4dt03475a",
language = "English",
volume = "44",
pages = "12388--12400",
journal = "Dalton Transactions",
issn = "1477-9234",
publisher = "Royal Society of Chemistry",
number = "27",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Catalytic behaviour in the ring-opening polymerisation of organoaluminiums supported by bulky heteroscorpionate ligands

AU - Castro-Osma, Jose A

AU - Alonso-Moreno, Carlos

AU - Lara-Sánchez, Agustín

AU - Otero, Antonio

AU - Fernández-Baeza, Juan

AU - Sánchez-Barba, Luis F

AU - Rodríguez, Ana M

PY - 2015/7/2

Y1 - 2015/7/2

N2 - A series of alkyl organoaluminium complexes based on bulky heteroscorpionate ligands were designed as catalysts for the ring-opening polymerisation of cyclic esters. Thus, the treatment of AlX3 (X = Me, Et) with bulky acetamide or thioacetamide heteroscorpionate ligands nbptamH () [nbptamH = N-naphthyl-2,2-bis(3,5-dimethylpyrazol-1-yl)thioacetamide], fbpamH () [fbpamH = N-fluorenyl-2,2-bis(3,5-dimethylpyrazol-1-yl)acetamide], ptbptamH () [ptbptamH = N-phenyl-2,2-bis(3,5-di-tert-butylpyrazol-1-yl)thioacetamide], ntbptamH () [ntbptamH = N-naphthyl-2,2-bis(3,5-di-tert-butylpyrazol-1-yl)thioacetamide], ptbpamH () [ptbpamH = N-phenyl-2,2-bis(3,5-di-tert-butylpyrazol-1-yl)acetamide] and (S)-mtbpamH () [(S)-mtbpamH = (S)-(-)-N-α-methylbenzyl-2,2-bis(3,5-di-tert-butylpyrazol-1-yl)acetamide] for 1 hour at 0 °C afforded the dialkyl aluminium complexes [AlX2{κ(2)-nbptam}] (X = Me , Et ), [AlX2{κ(2)-fbpam}] (X = Me , Et ), [AlX2{κ(2)-ptbptam}] (X = Me , Et ), [AlX2{κ(2)-ntbptam}] (X = Me , Et ), [AlX2{κ(2)-ptbpam}] (X = Me , Et ) and [AlX2{κ(2)-(S)-mtbpam}] (X = Me , Et ). The structures of the complexes were determined by spectroscopic methods and the X-ray crystal structure of was also established. The alkyl-containing aluminium complexes can act as efficient single-component initiators for the ring-opening polymerisation of ε-caprolactone and rac-lactide. The polymerisations are living, as evidenced by the narrow polydispersities of the isolated polymers and the linear nature of the number average molecular weight versus conversion plot. Finally, a comparative study of ring-opening polymerisation for new bulky heteroscorpionate aluminium initiators and the less congested aluminium analogues is reported.

AB - A series of alkyl organoaluminium complexes based on bulky heteroscorpionate ligands were designed as catalysts for the ring-opening polymerisation of cyclic esters. Thus, the treatment of AlX3 (X = Me, Et) with bulky acetamide or thioacetamide heteroscorpionate ligands nbptamH () [nbptamH = N-naphthyl-2,2-bis(3,5-dimethylpyrazol-1-yl)thioacetamide], fbpamH () [fbpamH = N-fluorenyl-2,2-bis(3,5-dimethylpyrazol-1-yl)acetamide], ptbptamH () [ptbptamH = N-phenyl-2,2-bis(3,5-di-tert-butylpyrazol-1-yl)thioacetamide], ntbptamH () [ntbptamH = N-naphthyl-2,2-bis(3,5-di-tert-butylpyrazol-1-yl)thioacetamide], ptbpamH () [ptbpamH = N-phenyl-2,2-bis(3,5-di-tert-butylpyrazol-1-yl)acetamide] and (S)-mtbpamH () [(S)-mtbpamH = (S)-(-)-N-α-methylbenzyl-2,2-bis(3,5-di-tert-butylpyrazol-1-yl)acetamide] for 1 hour at 0 °C afforded the dialkyl aluminium complexes [AlX2{κ(2)-nbptam}] (X = Me , Et ), [AlX2{κ(2)-fbpam}] (X = Me , Et ), [AlX2{κ(2)-ptbptam}] (X = Me , Et ), [AlX2{κ(2)-ntbptam}] (X = Me , Et ), [AlX2{κ(2)-ptbpam}] (X = Me , Et ) and [AlX2{κ(2)-(S)-mtbpam}] (X = Me , Et ). The structures of the complexes were determined by spectroscopic methods and the X-ray crystal structure of was also established. The alkyl-containing aluminium complexes can act as efficient single-component initiators for the ring-opening polymerisation of ε-caprolactone and rac-lactide. The polymerisations are living, as evidenced by the narrow polydispersities of the isolated polymers and the linear nature of the number average molecular weight versus conversion plot. Finally, a comparative study of ring-opening polymerisation for new bulky heteroscorpionate aluminium initiators and the less congested aluminium analogues is reported.

U2 - 10.1039/c4dt03475a

DO - 10.1039/c4dt03475a

M3 - Article

VL - 44

SP - 12388

EP - 12400

JO - Dalton Transactions

JF - Dalton Transactions

SN - 1477-9234

IS - 27

ER -