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Alan R. Katritzky Bahaa El‐Dien M. El‐Gendy Bogdan Draghici Dmytro Fedoseyenko Aziz Fadli Eric Metais 《Magnetic resonance in chemistry : MRC》2010,48(5):397-402
1H, 13C, and 15N NMR chemical shifts for pyridazines 4–22 were measured using 1D and 2D NMR spectroscopic methods including 1H? 1H gDQCOSY, 1H? 13C gHMQC, 1H? 13C gHMBC, and 1H? 15N CIGAR–HMBC experiments. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
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Zheng Huang Ohhyeon Kwon Haiyan Huang Aziz Fadli Xavier Marat Magali Moreau Prof. Dr. Jean‐Philip Lumb 《Angewandte Chemie (International ed. in English)》2018,57(37):11963-11967
Polyfunctional indoles bearing substituents at C5 and C6 are prevalent in natural products, pharmaceuticals, agrochemicals, and materials. Owing to the remoteness of the C5 and C6 positions, indoles of this family can be difficult to prepare, and often require multistep syntheses. Herein, we describe a concise process that converts simple derivatives of tyrosine into 5,6‐difunctionalized indoles by direct oxidation of C?H, N?H, and O?H bonds. Our work draws inspiration from the biosynthetic polymerization of tyrosine to make melanin pigments, but makes an important departure to provide well‐defined indole heterocycles. 相似文献
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Our main goal is to introduce some integral-type generalizations of the cosine and sine equations for complex-valued functions defined on a group G that need not be abelian. These equations provide a joint generalization of many trigonometric type functional equations such as d’Alembert’s, Cauchy’s, Gajda’s, Kannappan’s and Van Vleck’s equations. We prove that the continuous solutions for the first type and the central continuous solutions for the second one of these equations can be expressed in terms of characters, additive maps and matrix elements of irreducible, 2-dimensional representations of the group G. So the theory is part of harmonic analysis on groups. 相似文献
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