Transition-metal-free and facile synthesis of 3-alkynylpyrrole-2,4-dicarboxylates from methylene isocyanides and propiolaldehyde

Autor: Jiaan Shao, Xiaoli Huo, Liping Fu, Huajian Zhu, Liya Yu, Jiankang Zhang, Xiaojuan Chen, Chong Zhang, Linghui Zeng

Publikováno v: New Journal of Chemistry. 45:16430-16433

A transition-metal-free, facile and efficient method for the synthesis of 3-alkynylpyrrole-2,4-dicarboxylates from methylene isocyanides and propiolaldehyde with moderate to good yields has been developed. The direct transformation process and good t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b8c805ad4be17a93c989238006d6afb6
https://doi.org/10.1039/d1nj03596g

Gold-Catalyzed Synthesis of 3-Acylimidazo[1,2-a]pyridinesviaCarbene Oxidation

Autor: Jinqiang Liao, Hua Cao, Qinlin Chen, Haiying Zhan, Limin Zhao, Naiying Li, Shuxian Qiu

Publikováno v: Advanced Synthesis & Catalysis. 357:46-50

A convenient gold-catalyzed strategy for the synthesis of imidazo[1,2-a]pyridine derivatives has been developed via gold carbene complexes. This transformation opens a new synthetic route to a variety of 3-carbonyl-substituted imidazo[1,2-a]pyridines

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c18b925587930f02de13fb5300c04508
https://doi.org/10.1002/adsc.201400605

Aerobic Oxidation of Propargyl Alcohol: A Convenient Method for the Synthesis of Propiolaldehyde

Autor: Shengming Ma, Jinxian Liu

Publikováno v: Synthesis. 45:1624-1626

Propiolaldehyde was prepared by the oxidation of propargyl alcohol using molecular oxygen as the oxidant under atmospheric pressure and room temperature in a decent yield. Compared to the previous method with CrO3, such a protocol avoids the use of a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b6ed2d30b1195f73603d6970de405505
https://doi.org/10.1055/s-0033-1338798

Synthesis of 4-hydroxy[4-3H]-2(E)-nonen-1-al-diethylacetal

Autor: Dinesh Rao, Fabienne Bravais, Georges Bories, Jacques Alary, Laurent Debrauwer, Renée C. Rao

Publikováno v: Journal of Labelled Compounds and Radiopharmaceuticals
Journal of Labelled Compounds and Radiopharmaceuticals, Wiley-Blackwell, 1995, 36 (5), pp.471-477

4-Hydroxy-2(E)-nonen-1-al-diethylacetal 3 (HNE-DEA) was prepared by condensation of the Grignard compound derived from propiolaldehyde diethylacetal and n-hexanal followed by reduction of the resulting 4-hydroxy-2-nonyn-1-al-diethylacetal 2 with LiAl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e63ef42e35a6147989bcfa682f778062
https://doi.org/10.1002/jlcr.2580360511

Copper(I) bromide promoted reaction of grignard compounds with propiolaldehyde diethyl acetal. An efficient synthesis of allenic ethers and α,β-ethylenic aldehydes

Autor: Peter Vermeer, G. Tadema, Lambert Brandsma, John Meijer

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 95:66-67

Interaction between ethereal solutions of Grignard compounds RMgBr and propiolaldehyde diethyl acetal I in the presence of copper(I) bromide gives allenic ethers, III. Acid hydrolysis affords trans-α,β-ethylenic aldehydes, IV, in good to excellent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::25829099a169d17e13a1e4a6a0d7c6ba
https://doi.org/10.1002/recl.19760950305