Photosensitized Oxidations of Substituted Pyrroles: Unanticipated Radical-Derived Oxygenated Products
作者:Mariza N. Alberti、Georgios C. Vougioukalakis、Michael Orfanopoulos
DOI:10.1021/jo9012942
日期:2009.10.2
22) were isolated and characterized. Photooxidation of 2,5-dimethyl-substituted pyrrole 10 in aprotic solvents unexpectedly afforded aldehyde 23 as the major product. Moreover, photooxidation of pyrrole adduct 10 in protic solvents exclusively gave the unprecedented solvent-trapped products 24−27. The formation of products 11−22 was rationalized by the intermediacy of a common endoperoxide intermediate
Abstract Nucleophilic addition of 1-(2-hydroxyalkyl)pyrroles to acetylene, an unactivated carbon–carbon triple bond, in the presence of a base has been studied. As a result an atom-economic synthetic method to obtain 1-[2-(vinyloxy)alkyl]pyrroles in good yields employing superbase, sodium or potassium hydroxide in dimethyl sulfoxide, systems has been developed. 1-[2-(Vinyloxy)alkyl]pyrroles are cleaved
Synthesis of pyrrole N-derivatives from oxazolidines
作者:E. Kh. Sadykov、V. K. Stankevich、N. A. Lobanova、G. R. Klimenko
DOI:10.1134/s1070428014020134
日期:2014.2
Transformations of oxazolidine derivatives synthesized from industrially produced amino alcohols, aldehydes, and ketones under basic or acidic catalysis lead to the formation of N-alkyl- and N-(hydroxyalkyl)-substituted pyrroles in 19-81% yields.
CRISTAU, H. -J.;VIALA, J.;CHRISTOL, H., BULL. SOC. CHIM. FR., 1985, N 5, 980-988
作者:CRISTAU, H. -J.、VIALA, J.、CHRISTOL, H.
DOI:——
日期:——
Rhodium(II)‐Catalyzed Intramolecular Annulation of 1‐Sulfonyl‐1,2,3‐Triazoles with Pyrrole and Indole Rings: Facile Synthesis of N‐Bridgehead Azepine Skeletons
作者:Jin‐Ming Yang、Cheng‐Zhi Zhu、Xiang‐Ying Tang、Min Shi
DOI:10.1002/anie.201400881
日期:2014.5.12
method has been developed to construct highly functionalized N‐bridgeheadazepineskeletons, which are of great importance in biological and pharmaceutical industry. The reaction proceeds through a rhodium(II) azavinyl carbene intermediate, which initiated the intramolecular CH functionalization with pyrrolyl and indolyl rings. A variety of azepine derivatives were obtained in moderate to good yields under