Isocyanates, Part 4.10 Convenient Phosgene-Free Method for the Synthesis and Derivatization of Enantiopure α-Isocyanato Carboxylic Acid Esters

Synlett

Volumn 1997, Issue 8, 1997, Pages 925-928

  Knölker, Hans Joachim ^a   Braxmeier, Tobias ^a  

^a UNIVERSITY OF KARLSRUHE   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0242371719     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-1997-928     Document Type: Article

References (23)

1. For reviews on the synthesis and reactions of isocyanates, see: S. Ozaki, Chem. Rev. 1972, 72, 457; K. Findeisen, K. König, R. Sundermann in Methoden der Org. Chem. (Houben-Weyl), 4th ed., Vol. E4, 1983, p. 738; H. Ulrich, Chemistry and Technology of Isocyanates, Wiley, Chichester, 1996; et loc. cit.
2. For reviews on the synthesis and reactions of isocyanates, see: S. Ozaki, Chem. Rev. 1972, 72, 457; K. Findeisen, K. König, R. Sundermann in Methoden der Org. Chem. (Houben-Weyl), 4th ed., Vol. E4, 1983, p. 738; H. Ulrich, Chemistry and Technology of Isocyanates, Wiley, Chichester, 1996; et loc. cit.
3. For reviews on the synthesis and reactions of isocyanates, see: S. Ozaki, Chem. Rev. 1972, 72, 457; K. Findeisen, K. König, R. Sundermann in Methoden der Org. Chem. (Houben-Weyl), 4th ed., Vol. E4, 1983, p. 738; H. Ulrich, Chemistry and Technology of Isocyanates, Wiley, Chichester, 1996; et loc. cit.
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14. 4
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18. a) J. L. Moriniere, B. Danree, J. Lemoine, A. Guy, Synth. Commun. 1988, 18, 441; compare also: M. K. Dhaon, R. K. Olsen, K. Ramasamy, J. Org. Chem. 1982, 47, 1962.
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22. For the enantioselective synthesis of 1,2,3,4-tetrahydro-β-carbolines by Pictet-Spengler reaction of tryptophan derivatives, see: E. D. Cox, L. K. Hamaker, J. Li, P. Yu, K. M. Czerwinski, L., Deng, D. W. Bennett, J. M. Cook, W. H. Watson, M. Krawiec, J. Org. Chem. 1997, 62, 44.
23. For a recent application of diureas as chiral ligands in the asymmetric catalytic reduction of ketones, see for example: P. Gamez, B. Dunjic, M. Lemaire, J. Org. Chem. 1996, 61, 5196.