Xie, Ya-Sa; Huang, Run-Feng; Li, Ran; Zhang, Chuan-Bao; Fu, Ji-Ya; Zhao, Li-Li; Yuan, Jin-Fang published an article in 2020, the title of the article was Metal-free [3+3] benzannulation of 1-indanylidene-malononitrile with Morita-Baylis-Hillman carbonates: direct access to functionalized fluorene and fluorenone derivatives.Electric Literature of 2510-01-2 And the article contains the following content:
An efficient [3+3] benzannulation of Morita-Baylis-Hillman carbonates with 1-indanylidenemalononitrile was achieved under metal-free reaction conditions selectively delivering a wide range of functional multi-substituted fluorene I (R1 = H, 7-F, 6-Me, 6-OMe; R2 = H, 4-F, 3-Br, etc.) or fluorenone compounds II in high yields, resp. (up to 86% yield). Moreover, experiments and quantum chem. calculations were also performed to study the mechanism of the transformation. The experimental process involved the reaction of 2-(2,3-Dihydro-1H-inden-1-ylidene)malononitrile(cas: 2510-01-2).Electric Literature of 2510-01-2
The Article related to functionalized fluorene fluorenone preparation, indanylidene malononitrile morita baylis hillman carbonate benzannulation metal free, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Dibenzocyclobutenes, Acenaphthenes, Fluorenes, and Their Benzo Analogs, Such As Fluoranthenes and other aspects.Electric Literature of 2510-01-2
Referemce:
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