Tributylphosphine Catalyzed Stereoselective N -Vinylation of Phthalimide and Succinimide
摘要:
Protonation of the highly reactive 1:1 intermediates produced in the reaction between tributylphosphine and dialkyl acetylenedicarboxylates by imides (phthalimide and succinimide) leads to vinyltributylphosphonium salts, which undergo an addition-elimination reaction in CH2Cl2 at room temperature to produce the corresponding N-vinylimides (Z isomers) in excellent yields.
Protonation of the highly reactive 1:1 intermediates produced in the reaction between tributylphosphine and dialkyl acetylenedicarboxylates by imides (phthalimide and succinimide) leads to vinyltributylphosphonium salts, which undergo an addition-elimination reaction in CH2Cl2 at room temperature to produce the corresponding N-vinylimides (Z isomers) in excellent yields.