A simple removable aliphatic nitrile template 2-cyano-2,2-di-isobutyl acetic acid for remote meta-selective C–H functionalization

Ramesh, P. and Mallik, B. S. and Satyanarayana, G. and et al, . (2021) A simple removable aliphatic nitrile template 2-cyano-2,2-di-isobutyl acetic acid for remote meta-selective C–H functionalization. Organic Chemistry Frontiers, 8 (9). pp. 1959-1969. ISSN 2052-4129

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The remote meta-selective C-H bond functionalization of aromatic compounds is one of the most challenging yet valuable aims in synthetic organic chemistry. Despite notable recent achievements, only two types of removable aromatic templates including nitrile based aromatic templates and N-aromatic templates used as directing group templates in the methodologies have been reported so far. No aliphatic "directing group (DG)"template has been developed to date. Herein, we have successfully unveiled a simple and inexpensive removable aliphatic template for the first time as an effective DG template in promoting remote meta-C-H olefination of arenes. Remarkably, the template was obtained in excellent yields in just two steps and without column chromatography purification. The protocol is an efficient, economical, and practical approach in achieving meta-C-H olefination in good to excellent isolated yields with high levels of meta-selectivity under mild conditions. A wide variety of substituted arenes and olefin coupling partners are well tolerated in this reaction. Moreover, the aliphatic template is found to be advantageous due to its easy synthesis, easy installation/removal, and recyclability. We believe that this strategy offers new opportunities for the future development of new DG templates to promote site-selective C-H functionalizations.

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IITH Creators:
IITH CreatorsORCiD
Satyanarayana, GeduUNSPECIFIED
Mallik, Bhabani Shankarhttp://orcid.org/0000-0001-9657-1497
Item Type: Article
Subjects: Chemistry
Divisions: Department of Chemistry
Depositing User: . LibTrainee 2021
Date Deposited: 30 Jun 2021 05:24
Last Modified: 18 Feb 2022 09:22
URI: http://raiith.iith.ac.in/id/eprint/8053
Publisher URL: http://doi.org/10.1039/d1qo00140j
OA policy: https://v2.sherpa.ac.uk/cgi/search/publication/bas...
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