679005-01-7Relevant academic research and scientific papers
Diels-Alder reactivity of 4-aryl-1-phthalimido-2-siloxy-1,3-butadienes
Caballero, Esther,Alonso, Dulce,Peláez, Rafael,álvarez, Concepción,Puebla, Pilar,Sanz, Francisca,Medarde, Manuel,Tomé, Fernando
, p. 6871 - 6878 (2007/10/03)
The reaction of (1Z,3E) and (1E,3E) 4-aryl-1-phthalimido-2-trialkylsiloxy- 1,3-butadienes with maleimides and quinones has been studied. The observed exo-stereospecifity can be attributed to the simultaneous presence of the phthalimido and aryl groups, which produce strong hindrance during the endo approach.
1-Phthalimido-4-(3-indolyl)-2-siloxy-1,3-butadienes: Synthesis and Diels-Alder reactivity
Caballero, Esther,Alonso, Dulce,Peláez, Rafael,Alvarez, Concepción,Puebla, Pilar,Sanz, Francisca,Medarde, Manuel,Tomé, Fernando
, p. 1631 - 1634 (2007/10/03)
New 1-phthalimido-4-(3-indolyl)-2-trialkylsiloxy-1,3-butadienes were easily prepared from 1,3-dichloropropanone and their configurations were established from NMR data. Their Diels-Alder reactivity with different maleimides and quinones was studied, high yields of the exo cycloadducts being obtained, as confirmed by X-ray diffraction studies.
