Diels–Alder reactivity of 4-aryl-1-phthalimido-2-siloxy-1,3-butadienes
摘要:
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. (c) 2005 Elsevier Ltd. All rights reserved.
Diels–Alder reactivity of 4-aryl-1-phthalimido-2-siloxy-1,3-butadienes
摘要:
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. (c) 2005 Elsevier Ltd. All rights reserved.