Regio-selective metalloradical catalyzed carbonoxygen bond cleavage of epoxides with rhodium porphyrin hydride

Publication date: Available online 5 March 2019Source: Journal of Organometallic ChemistryAuthor(s): Chun Meng Tam, Kin Shing ChanAbstractThe carbon-oxygen bond activation (COA) of epoxides with rhodium(II) and rhodium (III) porphyrins have been examined. RhIII(ttp)H (1) (ttp = 5,10,15,20-tetratolylporphyrinato dianion) was found to cleave the less sterically hindered carbon-oxygen bond of epoxides selectively at room temperature under neutral conditions to generate the stoichiometric COA product rhodium porphyrin β-hydroxyl alkyls in moderate to good yields.Graphical abstract[RhII(ttp)]2 metalloradical catalyzed the 1,2-insertion of epoxides with RhIII(ttp)H at room temperature under neutral conditions to give the rhodium porphyrin β-hydroxyl alkyls complexes in moderate to good yields.

Source: Journal of Organometallic Chemistry - March 6, 2019 Category: Chemistry Source Type: research