Results 151 to 160 of about 6,575 (208)

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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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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Epoxides and Aziridines

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Albert Padwa, S. Shaun Murphree
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An Amine‐Promoted Aziridination of Chalcones.

ChemInform, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Yu-Mei, Shen, Mei-Xin, Zhao, Jiaxi, Xu, Yian, Shi   +3 more
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Chemistry of Carbohydrate Aziridines

2006
Publisher Summary This chapter discusses the chemistry of carbohydrate aziridines, with emphasis being placed on surveying preparative methods and ring-opening reactions. Carbohydrate aziridines or epimines are derivatives in which an aziridine ring is fused to a pyranose or furanose ring or to an exocyclic part of a carbohydrate molecule.
Jindrich, Karban, Jirí, Kroutil
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Organocatalytic Asymmetric Aziridination of Enones

Angewandte Chemie International Edition, 2008
A primary amine derived from cinchona alkaloids as a salt with d-N-Boc phenylglycine (Boc = tert-butoxycarbonyl) is an efficient catalyst for the aziridination of α,β-unsaturated ketones. This method is effective with both linear and cyclic substrates, leading to chiral aziridines in high yield, with complete diastereoselectivity, and with very high ...
PESCIAIOLI, FABIO, DE VINCENTIIS, FRANCESCO, GALZERANO, PATRIZIA, BENCIVENNI, GIORGIO, BARTOLI, GIUSEPPE, MAZZANTI, ANDREA, MELCHIORRE, PAOLO   +6 more
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A probable aziridine radical: mechanism of addition of aziridine to styrenes

Journal of the Chemical Society D: Chemical Communications, 1969
Strong evidence of an aziridine radical in the sodium-catalysed addition of aziridine to styrenes has been obtained.
openaire   +1 more source

Aziridines

2000
David N. Roark, Blaine C. McKusick, Ulrich Steuerle   +2 more
openaire   +1 more source

Synthesis of steroidal aziridines

The Journal of Organic Chemistry, 1972
R, Ikan, A, Markus, Z, Goldschmidt
openaire   +2 more sources

The Crystal Structure of Aziridine

Angewandte Chemie International Edition in English, 1997
Mitzel, Norbert W., Riede, J, Kiener, C
openaire   +2 more sources