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Ru(II)-Catalyzed Sulfur-Directed Ortho-C-H Functionalization: Divergent Reactivity and C-Se Bond Cleavage With
Lalit Negi1, Manisha Manisha1, Aarti Peswani1
1Department of Chemistry, Malaviya National Institute of Technology Jaipur, Jaipur, Rajasthan, India.
None:
Sulfur-directed, selective ortho-functionalization of benzyl thioethers with maleimides has been achieved under a ruthenium-catalyzed system; herein, temperature and additive play a crucial role in determining product selectivity. The ortho-alkenylated maleimide proved thermally sensitive in the presence of Cu(OAc)2, whereas the presence of Zn(OAc)2 diverted the reaction pathway towards an exclusive ortho-alkylation. However, benzyl phenyl selenoethers afford selenated maleimide derivatives via C─Se bond cleavage under established reaction protocols.
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