325981-97-3Relevant academic research and scientific papers
Regiocontrol of radical cyclization by Lewis acids. Efficient synthesis of optically active functionalized cyclopentanes and cyclohexanes
Kim, Kwangho,Okamoto, Sentaro,Sato, Fumie
, p. 67 - 69 (2007/10/03)
(equation presented) Treatment of α-alkylidenelactones 3a-d with Bu3SnH and a catalytic amount of Et3B effected a 5-exo radical cyclization preferentially to provide the corresponding 1 and 2 in a ratio of 70:30 to 100:0. Meanwhile,
