128676-99-3Relevant academic research and scientific papers
Unusual Stereo- and Regioselectivity Observed in Cycloadditions of the N-Titanated Azomethine Ylides Derived from t-Butyl (Benzylideneamino)acetate with α,β-Unsaturated Esters
Kanemasa, Shuji,Uchida, Osamu,Wada, Eiji,Yamamoto, Hidetoshi
, p. 105 - 108 (2007/10/02)
Cycloadditions of the N-titanated azomethine ylides, derived from t-butyl (benzylideneamino)acetate, with α,β-unsaturated esters afford three different types of cycloadducts, depending upon the structure of dipolarophiles and the reaction temperature.In the reactions at room temperature, exo cycloadducts are exclusively produced, while either endo cylcoadducts or regioisomeric ones are obtained in the reactions at a low temperature.
