937030-03-0Relevant articles and documents
Multicomponent reaction of imidazo[1,5- a ]pyridine carbenes with aldehydes and dimethyl acetylenedicarboxylate or allenoates: A straightforward approach to fully substituted furans
Pan, Huan-Rui,Li, Yong-Jia,Yan, Cai-Xia,Xing, Juan,Cheng, Ying
supporting information; experimental part, p. 6644 - 6652 (2010/11/17)
The facile three-component reactions of N,N-substituted imidazo[1,5-a]pyridine carbenes, namely imidazo[1,5-a]pyridin-3-ylidenes, with aldehydes and DMAD or allenoates were disclosed. Both reactions proceeded via tandem nucleophilic addition, [3 + 2]-cycloaddition, and ring transformation to produce different 4-[(2-pyridyl)methyl]aminofuran derivatives generally in moderate yields. This work not only 'rovided the first example of the application of imidazo[1,5-a]pyridin-3-ylidenes in organic synthesis but also developed a straightforward approach to fully substituted furans that are not easily accessible by other methods.