Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 28, Issue 33, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202200704
Keywords
cyclization; electrophilic substitution; fluorine; polycycles; spiro compounds
Categories
Funding
- JSPS [20K06947]
- Grants-in-Aid for Scientific Research [20K06947] Funding Source: KAKEN
Ask authors/readers for more resources
A simplified method for the synthesis of 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 has been developed, along with successful derivatization of triflylated spiro[cyclobutene-1,9'-fluorene] products.
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 Tf2C=CH2, has been developed. This synthetic methodology includes selective formation of gem-bis(triflyl)cyclobutenes from biaryl-alkynes and Tf2C=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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available