1227410-75-4Relevant academic research and scientific papers
Formation of cyclic allenes and cumulenes by cooperative addition of frustrated Lewis pairs to conjugated enynes and diynes
Moemming, Cornelia M.,Kehr, Gerald,Wibbeling, Birgit,Froehlich, Roland,Schirmer, Birgitta,Grimme, Stefan,Erker, Gerhard
supporting information; experimental part, p. 2414 - 2417 (2010/06/17)
Eight, not six: The intramolecular frustrated Lewis pair 1 reacts with conjugated enynes and diynes by 1, 4-addition to yield the corresponding eight-membered cyclic allenes 2 and cumulenes 3, respectively. The thermodynamically more favorable 1, 2-addition (formation of six-mem bered-ring products) is not observed, which indicates that the observed addition is a kinetically controlled reaction. (Figure Presented)
