1 research outputs found
A Benzoyl Peroxide/Diphenyl Diselenide Binary System for Functionalization of Alkynes Leading to Alkenyl and Alkynyl Selenides
Binary
systems consisting of benzoyl peroxide (BPO) and diorganyl
diselenide are effective in the selective benzoyloxyselenation of
internal alkynes to afford the corresponding β-(benzoyloxy)Âalkenyl
selenides in good yields. In contrast to internal alkynes, terminal
alkynes undergo a novel CÂ(sp)–H substitution with the phenylseleno
group of the BPO/(PhSe)<sub>2</sub> system, providing alkynyl selenides
in good yields. Both selenation reactions might proceed via benzoyloxy
selenide (PhCÂ(O)ÂO–SeAr) as a key intermediate for electrophilic
addition to alkynes. The products alkenyl and alkynyl selenides are
expected to be useful synthetic intermediates in organic synthesis