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Correction

Correction: de Gonzalo, G. Lipase Catalysed Kinetic Resolution of Racemic 1,2-Diols Containing a Chiral Quaternary Center. Molecules 2018, 23, 1585

by
Gonzalo De Gonzalo
Departamento de Química Orgánica, Universidad de Sevilla, c/Profesor García González 1, 41012 Sevilla, Spain
Molecules 2018, 23(10), 2503; https://doi.org/10.3390/molecules23102503
Submission received: 11 September 2018 / Accepted: 13 September 2018 / Published: 29 September 2018
(This article belongs to the Special Issue Molecules for Biotechnologies)
The authors wish to make the following corrections to their paper [1]. The authors are sorry to report that the absolute configurations of the 1,2-diols (15d) as well as the acetates (15e) obtained in this paper are inverted. In order to establish the absolute configuration of these compounds, specific rotation values should be compared with those described in [2] for (R)-1d, (R)-4d and (R)-5d, instead of the value provided in [3] for (R)-ethyl 2-benzyl-2,3-dihydroxypropanoate. This compound is the benzylic analogue of 1,2-diols 15d. Compound 6d (ethyl 2-hydroxy-2-hydroxymethyl-4-phenylbutanoate) presents the chiral quaternary center bound to an aliphatic carbon instead of an aromatic one. Thus, specific rotation values cannot be compared with the ones given in [2], and only the relative configurations of 6d and 6e are indicated. Consequently, the authors wish to make the following corrections to the paper:
In the enzymatic kinetic resolutions of 1,2-diols containing the chiral center bound to an aromatic carbon atom, (S)-1,2-diols (S)-15d and (R)-acetates (R)-15e are obtained. With regard to substrate 6d, the 1,2-diol achieved was (−)-6d, whereas the acetate obtained was (+)-6e.
Thus, we replace all over the manuscript (R)-15d with (S)-15d, (S)-15e with (R)-15e, (R)-6d with (−)-6d and (S)-6e with (+)-6e. In page 4, replace “(±)-1e” with “(±)-1d”, “(S)-acetates 26e” with “(R)-acetates 25e”.
In page 6 we change “The absolute configuration of the 1,2-diols (R)-16d and the acetates (S)-16e” with “The absolute configuration of the 1,2-diols (S)-15d and the acetates (R)-15e”, and “(R)-ethyl 2-benzyl-2,3-dihydroxypropanoate [23].” to “(R)-ethyl 2,3-dihydroxy-2-phenylpropanoate [(R)-1d], (R)-ethyl 2,3-dihydroxy-2-(4-methoxyphenyl)propanoate [(R)-4d], and (R)-ethyl 2,3-dihydroxy-2-(tiophen-2-yl)propanoate, [(R)-5d] in reference [26].”
The scheme of Table 2 is to be replaced:
Table 2. Lipase-catalysed acylation of rac-ethyl 2,3-dihydroxy-2-phenylprpanoate (1d) at different reaction conditions. Molecules 23 02503 i001 with
Table 2. Lipase-catalysed acylation of rac-ethyl 2,3-dihydroxy-2-phenylpropanoate (1d) at different reaction conditions. Molecules 23 02503 i002 with
The scheme of Table 3 is also to be replaced:
Table 3. PSL-C catalysed kinetic resolution of racemic diols 26d in tert-butyl methyl ether (TBME) at 30 °C using vinyl acetate as the acyl donor. Molecules 23 02503 i003 with
Table 3. PSL-C catalysed kinetic resolution of racemic diols 26d in tert-butyl methyl ether (TBME) at 30 °C using vinyl acetate as the acyl donor.
Molecules 23 02503 i004
The author would like to apologize for any inconvenience caused to the readers. The manuscript will be updated and the original will remain online on the article webpage, with a reference to this Correction.

References

  1. de Gonzalo, G. Lipase Catalysed Kinetic Resolution of Racemic 1,2-Diols Containing a Chiral Quaternary Center. Molecules 2018, 23, 1585. [Google Scholar] [CrossRef] [PubMed]
  2. Crespo-Peña, A.; Monge, D.; Martín-Zamora, E.; Álvarez, E.; Fernández, R.; Lassaletta, J.M. Asymmetric Formal Carbonyl-Ene Reactions of Formaldehyde tert-Butyl Hydrazone with α-Keto Esters: Dual Activation by Bis-urea Catalysts. J. Am. Chem. Soc. 2012, 134, 12912–12915. [Google Scholar] [CrossRef] [PubMed]
  3. Jew, S.; Roh, E.; Baek, E.; Mireille, L.; Kim, H.; Jeong, B.; Park, M.; Park, H. Asymmetric synthesis of (R)-(+)-etomoxir via enzymatic resolution. Tetrahedron Asymmetry 2000, 11, 3395–3401. [Google Scholar] [CrossRef]

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MDPI and ACS Style

De Gonzalo, G. Correction: de Gonzalo, G. Lipase Catalysed Kinetic Resolution of Racemic 1,2-Diols Containing a Chiral Quaternary Center. Molecules 2018, 23, 1585. Molecules 2018, 23, 2503. https://doi.org/10.3390/molecules23102503

AMA Style

De Gonzalo G. Correction: de Gonzalo, G. Lipase Catalysed Kinetic Resolution of Racemic 1,2-Diols Containing a Chiral Quaternary Center. Molecules 2018, 23, 1585. Molecules. 2018; 23(10):2503. https://doi.org/10.3390/molecules23102503

Chicago/Turabian Style

De Gonzalo, Gonzalo. 2018. "Correction: de Gonzalo, G. Lipase Catalysed Kinetic Resolution of Racemic 1,2-Diols Containing a Chiral Quaternary Center. Molecules 2018, 23, 1585" Molecules 23, no. 10: 2503. https://doi.org/10.3390/molecules23102503

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