Polyfluorinated esters of 4-chloro-2-oxobut-3-ynoic acid. Cycloaddition reactons of hexafluoroisopropyl 4-chloro-2-oxobut-3-ynoate, an incredibly electrophilic alkyneстатья
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 17 июня 2020 г.
Аннотация:A series of chloroalkynes activated with extremely strong electron withdrawing polyfluoroalkyloxalyl substituents
were prepared for the first time from available bis(trimethylstannyl) acetylene and the corresponding
acid chlorides. Hexafluoroisopropyl ester, thus obtained, probably proved to be the most electrophilic alkyne
known so far. It is not only extremely strong dienophile in the Diels-Alder reaction, but undergoes the unusual
uncatalyzed [2+2]-cycloaddition reactions with simple alkenes under very mild conditions.