Results 121 to 130 of about 2,054 (167)

Recent Developments in Stereoselective Reactions of Sulfoxonium Ylides. [PDF]

Molecules
O'Shaughnessy C, Mondal M, Kerrigan NJ.
europepmc   +1 more source

Cyclic carbamates from epoxides and isocyanates catalysed by inorganic salts. [PDF]

RSC Adv
Holland J, Clark RA, Shaver MP.
europepmc   +1 more source

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Synthesis of oxazolinyl aziridines

Tetrahedron Letters, 1999
Abstract Aziridinyllithiums 4a and 4b , which are stable at low temperature, can be generated by deprotonation of 3a and 3b . Oxazolinyl aziridines 5a-j and 6a-b have been prepared by the reaction of oxazolinyl aziridinyllithiums 4a and 4b with electrophiles. Aziridines 6c and 6d were, instead, synthesized by a Darzens-like reaction
S. FLORIO, TROISI, Luigino, V. CAPRIATI, G. INGROSSO   +3 more
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Asymmetric Aziridination

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
M. M. Faul, D. A. Evans
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Aziridines: epoxides’ ugly cousins?

Chem. Soc. Rev., 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
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Formation of Scalemic Aziridines via the Nucleophilic Opening of Aziridines

The Journal of Organic Chemistry, 1997
Introduction As part of our work in the preparation of aziridineallylsilanes1 we had need of a method for the preparation of simple monosubstituted, scalemic aziridines such as 1. The preparation of scalemic aziridines has been well covered in a number of reviews.2 Two methods seemed particularly well suited for the preparation of the types of ...
Stephen C., Bergmeier, Punit P., Seth
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Asymmetric Catalytic Aziridination to Synthesize Spiro‐aziridine Oxindoles

Chemistry – A European Journal
AbstractAsymmetric catalytic aza‐Michael‐initiated ring closure of methyleneindolinones with N‐tosyloxycarbamates has been established. The reaction using a chiral nickel complex catalyst enabled the formation of a series of spiro‐aziridine oxindoles in good yields (up to 99 %) with high stereoselectivity (up to 97 % ee, >19 : 1 dr) under mild ...
Yinhe Qu, Zhenzhong Liu, Yuqiao Zhou, Xiaoming Feng, Xiaohua Liu   +4 more
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N‐Arylation of Aziridines.

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Mikio, Sasaki, Shadi, Dalili, Andrei K, Yudin   +2 more
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A Sulfonyl-Substituted Aziridine

Acta Crystallographica Section C Crystal Structure Communications, 1996
In the title compd., 1-p-toluenesulfonylaziridine-(2S)-carboxylic acid tert-Bu ester, C14H19NO4S, the p-toluenesulfonyl substituent on the N atom and the ester substituent on one C atom of the aziridine ring are mutually trans, minimizing steric interactions.
Clegg, William, Heath, Sarah L, Horsburgh, Lynne, Jackson, Richard F W, Wood, Anthony   +4 more
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Catalyst-free aziridination and unexpected homologation of aziridines from imines

Organic & Biomolecular Chemistry, 2010
Aziridination and unpredicted homologation reaction of N-sulfonylimines were achieved easily with a very simple, rapid and mild procedure through the use of diazomethane without the presence of any catalyst. The method represents an attractive alternative to metal-catalyzed processes.
Paula Sério, Branco, Vivek Prabhakar, Raje, Jorge, Dourado, Joana, Gordo   +3 more
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