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Protocol for the Synthesis of Ortho-trifluoromethoxylated Aniline Derivatives
Published on: January 19, 2016
Tandem Reaction of Azide with Isonitrile and TMSCnFm(H): Access to N-Functionalized C-Fluoroalkyl Amidine
Wenxu Chang1, Zizhen Lei1, Yi Yang1
1College of Science, China Agricultural University, 2 West Yuanmingyuan Road, Beijing 100193, China.
Abstract:
N-Functionalized C-fluoroalkyl amidines are attracting great attention due to their potential in pharmaceuticals. Herein, we report a Pd-catalyzed tandem reaction of azide with isonitrile and fluoroalkylsilane via a carbodiimide intermediate, providing facile access to N-functionalized C-fluoroalkyl amidines. This protocol offers an approach toward not only N-sulphonyl, N-phosphoryl, N-acyl, and N-aryl but also C-CF3, C2F5, and CF2H amidines with a broad substrate scope. The accomplishment of further transformations and Celebrex derivatization in gram scale and biological evaluation reveals the important utility of this strategy.
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