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- W4224026173 abstract "A two-step synthesis of less accessible spiro[cyclobutene-1,9'-fluorene] compounds from biaryl-alkynes and 2-(2-fluoropyridin-1-ium-1-yl)-1,1-bis((trifluoromethyl)sulfonyl)ethan-1-ide, which serves as a potent precursor for outstandingly electrophilic Tf2 C=CH2 , has been developed. This synthetic methodology includes selective formation of gem-bis(triflyl)cyclobutenes from biaryl-alkynes and Tf2 C=CH2 followed by desulfinative spirocyclisation mediated by 1,1,1,3,3,3-hexafluoroisopropyl alcohol (HFIP). Besides, on the basis of the chameleonic reactivity of sulfone functionality, several derivatisations of triflylated spiro[cyclobutene-1,9'-fluorene] products have been successfully achieved." @default.
- W4224026173 created "2022-04-19" @default.
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- W4224026173 creator A5032594146 @default.
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- W4224026173 date "2022-05-16" @default.
- W4224026173 modified "2023-09-26" @default.
- W4224026173 title "Synthesis of Spirocyclic Cyclobutenes through Desulfinative Spirocyclisation of <i>gem</i> ‐Bis(triflyl)cyclobutenes" @default.
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- W4224026173 doi "https://doi.org/10.1002/chem.202200704" @default.
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