Oxazoline-based organocatalyst for enantioselective strecker reactions: a protocol for the synthesis of levamisole.Chemistry. 2013 Oct 11; 19(42):14224-32.C
Abstract
A chiral oxazoline-based organocatalyst has been found to efficiently catalyze asymmetric Strecker reactions of various aromatic and aliphatic N-benzhydrylimines with trimethylsilyl cyanide (TMSCN) as a cyanide source at -20 °C to give α-aminonitriles in high yield (96 %) with excellent chiral induction (up to 98 % ee). DFT calculations have been performed to rationalize the enantioselective formation of the product with the organocatalyst in these reactions. The organocatalyst has been characterized by single-crystal X-ray diffraction analysis, as well as by other analytical methods. This protocol has been extended to the synthesis of the pharmaceutically important drug molecule levamisole in high yield and with high enantioselectivity.
Links
MeSH
Pub Type(s)
Journal Article
Research Support, Non-U.S. Gov't
Language
eng
PubMed ID
24009109
Citation
Sadhukhan, Arghya, et al. "Oxazoline-based Organocatalyst for Enantioselective Strecker Reactions: a Protocol for the Synthesis of Levamisole." Chemistry (Weinheim an Der Bergstrasse, Germany), vol. 19, no. 42, 2013, pp. 14224-32.
Sadhukhan A, Sahu D, Ganguly B, et al. Oxazoline-based organocatalyst for enantioselective strecker reactions: a protocol for the synthesis of levamisole. Chemistry. 2013;19(42):14224-32.
Sadhukhan, A., Sahu, D., Ganguly, B., Khan, N. U., Kureshy, R. I., Abdi, S. H., Suresh, E., & Bajaj, H. C. (2013). Oxazoline-based organocatalyst for enantioselective strecker reactions: a protocol for the synthesis of levamisole. Chemistry (Weinheim an Der Bergstrasse, Germany), 19(42), 14224-32. https://doi.org/10.1002/chem.201302007
Sadhukhan A, et al. Oxazoline-based Organocatalyst for Enantioselective Strecker Reactions: a Protocol for the Synthesis of Levamisole. Chemistry. 2013 Oct 11;19(42):14224-32. PubMed PMID: 24009109.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR
T1 - Oxazoline-based organocatalyst for enantioselective strecker reactions: a protocol for the synthesis of levamisole.
AU - Sadhukhan,Arghya,
AU - Sahu,Debashis,
AU - Ganguly,Bishwajit,
AU - Khan,Noor-ul H,
AU - Kureshy,Rukhsana I,
AU - Abdi,Sayed H R,
AU - Suresh,E,
AU - Bajaj,Hari C,
Y1 - 2013/09/05/
PY - 2013/05/24/received
PY - 2013/06/27/revised
PY - 2013/9/7/entrez
PY - 2013/9/7/pubmed
PY - 2015/3/31/medline
KW - Strecker reaction
KW - aminonitriles
KW - enantioselectivity
KW - organocatalysis
KW - oxazoline
SP - 14224
EP - 32
JF - Chemistry (Weinheim an der Bergstrasse, Germany)
JO - Chemistry
VL - 19
IS - 42
N2 - A chiral oxazoline-based organocatalyst has been found to efficiently catalyze asymmetric Strecker reactions of various aromatic and aliphatic N-benzhydrylimines with trimethylsilyl cyanide (TMSCN) as a cyanide source at -20 °C to give α-aminonitriles in high yield (96 %) with excellent chiral induction (up to 98 % ee). DFT calculations have been performed to rationalize the enantioselective formation of the product with the organocatalyst in these reactions. The organocatalyst has been characterized by single-crystal X-ray diffraction analysis, as well as by other analytical methods. This protocol has been extended to the synthesis of the pharmaceutically important drug molecule levamisole in high yield and with high enantioselectivity.
SN - 1521-3765
UR - https://www.unboundmedicine.com/medline/citation/24009109/Oxazoline_based_organocatalyst_for_enantioselective_strecker_reactions:_a_protocol_for_the_synthesis_of_levamisole_
DB - PRIME
DP - Unbound Medicine
ER -