Synthesis 2021; 53(13): 2269-2276
DOI: 10.1055/a-1385-6119
paper

2-Pyridyl Sulfoxide Directed Pd(II)-Catalyzed C–H Olefination of Arenes with Molecular Oxygen as the Sole Oxidant

Mamta Yadav
,
Ram Singh Jat
,
Bibek Sarma
,
M. Bhanuchandra
This work was supported by the Department of Science and Technology, Science and Engineering Research Board (DST-SERB, Grant Ref. No. EEQ/2017/000768) and the University Grants Commission [UGC, File No. 30-356/2017(BSR)]. M.Y., R.S.J., and B.S. thank the Council of Scientific and Industrial Research (CSIR), India and the Science and Engineering Research Board (SERB) for research fellowships. We thank the Department of Science and Technology, Fund for Improvement of S&T Infrastructure in Higher Educational Institutions [DST-FIST­, Grant No. SR/FST/CSI-257/2014(C)] for a research grant to the Department of Chemistry, and also thank the Central University of Rajasthan for support.


Abstract

Pd(II)-catalyzed C–H olefination of aryl 2-pyridyl sulfoxides with unactivated and activated olefins has been demonstrated. We employed environmentally benign and inexpensive molecular oxygen as the sole oxidant. The versatile nature of the 2-pyridyl sulfoxide directing group has been proven by its transformation to the sulfone functionality. Deuterium scrambling experiments and intramolecular kinetic isotopic studies were carried out to gain insights into the reaction pathway.

Supporting Information



Publication History

Received: 28 January 2021

Accepted after revision: 08 February 2021

Accepted Manuscript online:
08 February 2021

Article published online:
23 February 2021

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