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Photoinduced and palladium-catalyzed hydrogen atom transfer triggered 1,2-difunctionalization of 1,3-dienes with hydroxamides

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Science China Chemistry 2022年第5期65卷 863-869页

作者： Xiao-Yun Ruan Tao Zhang Wen-Ao Li Yi-Zhuo Yin Zhi-Yong Han Liu-Zhu Gong Department of Chemistry University of Science and Technology of ChinaHefei 230026China

The discovery of novel catalysis modes to generate a significant increase in structural complexity from readily available reactants is a fundamental goal in modern organic ***,we report a photoinduced palladium-catalyzed hydrogen atom transfer triggered 1,2-difunctionalization of conjugated *** the employment of exogeneous photosensitizers and external oxidants,the cascade reaction realized the integration of remote functionalization of various C(sp^(3))-H bonds and selective difunctionalization of 1,3-dienes with 100% atom efficiency,allowing for the synthesis of structurally diverse amides with up to 90% *** the prevalence of amides in pharmaceuticals and natural products,the current protocol has provided an efficient means to access highly functionalized amides from readily available carboxylic acid derivatives and 1,3-dienes.

关键词： photoinduced palladium catalysis C–H activation hydrogen atom transfer 1,3-dienes allylation

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Stereoselective Synthesis of Functionalized 1,3-dienes in Water

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Chinese Journal of Chemistry 2011年第5期29卷 951-954页

作者： Rostami Charati Faramarz Hossaini, Zinatossadat Moghaddasi-Kouchaksaraei Fatemeh Hajinasiri Rahimeh Department of Chemistry Faculty of Science Gonbad Kavous University P. O. Box 163 Gonbad Iran Department of Chemistry Qaemshahr branch Islamic Azad University P. O. Box 163 Qaemshahr Iran Department of Chemistry Payamme Noor University Sari Branch Sari Iran

An efficient synthesis of functionalized 1,3-dienes via one-pot reactions between dialkyl acetylenedicarboxylates, 1,3-dicarbonyl compounds and secondary amines in water as the solvent is described. The mild reaction ... 详细信息

关键词： 1,3-dienes 1,3-dicarbonyl dialkyl acetylenedicarboxylate secondary amines

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Design,synthesis,and applications of stereospecific 1,3-diene carbonyls

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Science China Chemistry 2022年第5期65卷 912-917页

作者： Qiang Feng Shihui Wang Xingxing Ma Changqing Rao Qiuling Song Institute of Next Generation Matter Transformation College of Material Sciences&EngineeringHuaqiao UniversityXiamen 361021China Key Laboratory of Molecule Synthesis and Function Discovery Fujian Province UniversityCollege of ChemistryFuzhou UniversityFuzhou 350108China School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007China

The strategy toward the synthesis of various 1,3-dienals or 1,3-dienones is disclosed between diazo compounds and furans,which features metal-free,additive-free,broad functional group tolerance,and readily accessible starting ***,this strategy is applicable in both intramolecular and intermolecular *** studies suggested that the reactions undergo a cyclopropanation/rearrangement *** an E/E-1,3-dienal,corresponding N-tosylhydrazones were readily prepared and subjected to phenylboronic acid to form a double bond migration product and indoles to construct a five-member ring via [3 + 2] annulation reaction.

关键词： 1,3-dienes aldehydes ketones [3+2]annulation couplings

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