Erratum: Synthesis of new ionic-liquid-tagged organocatalysts and their application in stereoselective direct aldol reactions (Tetrahedron (2010) 66:27 (5082-5088))

Full text of DOI:10.1016/j.tet.2010.09.107

Tetrahedron 66 (2010) 9468
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Tetrahedron
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Corrigendum
Corrigendum to ‘Synthesis of new ionic-liquid-tagged organocatalysts and their
application in stereoselective direct aldol reactions’ [Tetrahedron 66 (27e28)
(2010) 5082e5088]
*
€
Sadaf S. Khan, Jabbar Shah, Jurgen Liebscher
Institute of Chemistry, Humboldt-University Berlin, Brook-Taylor-Str.2, 12489 Berlin, Germany
The authors regret there was an error in Scheme 1. The correct Scheme 1 is as follows:
N
RO
N
BF4
O
OH
N
BF4
O
OH
O
O
N
N
H2N
N
N
H
O
OH
O
1a (R = H)
1b (R = Me)
1c
N
H
BF4
O
OH
N
N
H2N
N
8
2
N
N
R
N
O
O
CuSO4, Na-ascorbate,
MeOH, rt
COOBn
+
COOBn
N
Cbz
R
N
Cbz
_
N3
5a (R = HO2CCH2
)
_
5b (R = MeO2CCH2
)
3
4
O
OH
5c (R =
CbzHN
( )4
MeI, MeCN
reflux, 12h
BF4
N
N
R
N
1. AgBF4, MeOH, rt
O
I
OH
O
2. H2- 5 bar, Pd/C, MeOH,
N
N
R
N
N
H
O
_
COOBn
1a (R = HO2CCH2
1b (R = MeO2CCH2
)
N
Cbz
_
_
)
6a (R = HO2CCH2 )
_
6b (R = MeO2CCH2
)
O
OH
1c (R =
O
OH
6c (R =
H2N
( )4
CbzHN
( )4
Scheme 1. Synthesis of triazolium salts 1aec.
The authors would like to apologise for any inconvenience this may have caused to the authors of this article and readers of the journal.
DOI of original article: 10.1016/j.tet.2010.04.115.
* Corresponding author. Fax: þ49 30 20937552; e-mail address: liebscher@chemie.hu-berlin.de (J. Liebscher).
0040-4020/$ e see front matter Ó 2010 Elsevier Ltd. All rights reserved.
doi:10.1016/j.tet.2010.09.107