1236303-09-5Relevant articles and documents
F- Nucleophilic-Addition-Induced [3 + 2] Annulation: Direct Access to CF3-Substituted Indenes
Tang, Hai-Jun,Zhang, Yu-Feng,Jiang, Yi-Wen,Feng, Chao
supporting information, p. 5190 - 5193 (2018/09/12)
An efficient [3 + 2] annulation of (2,2-difluorovinyl)-2-iodoarenes and internal alkynes was developed for the synthesis of 1-(trifluoromethyl)-1H-indenes. The success of this strategy hinges upon a well-balanced process for the generation of two transient reactive species, specifically trifluoroethylsilver and alkenylpalladium intermediates, in the same molecule, as well as a smooth transmetalation step, which delicately joins together these two different metallic intermediates.
Palladium-catalyzed annulation reactions of methyl o-halobenzoates with azabicyclic alkenes: A general protocol for the construction of benzo[c]phenanthridine derivatives
Guo, Cui,Huang, Kanglun,Wang, Bo,Xie, Longguang,Xu, Xiaohua
, p. 17271 - 17280 (2013/09/24)
The annulation reaction of methyl o-halobenzoates with azabicyclic alkenes proceeds efficiently to give the corresponding benzo[c]phenanthridine derivatives in good to excellent yields using a developed base-free methodology based on our preliminary studies. Thirty-seven application examples validate the compatibility of the present strategy with different groups, particularly with the electron-deficient ones, that are difficult to access using other traditional methods. In addition, annulation reactions with non-symmetric azabicyclic alkenes are achieved in high regioselectivity.
PIPERIDINE DERIVATIVES
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Page/Page column 31, (2010/08/08)
The present invention relates to a compound of formula I wherein R1, R2, and Ar are as defined herein or to a pharmaceutically acceptable acid addition salt, to a racemic mixture, or to its corresponding enantiomer and/or optical iso