Abstract
The urethanes and tosamides of 3-Hydroxypent-4-enylamine and its C 1 C 4 substituted derivatives undergo the palladium catalyzed intramolecular aminocarbonylation (0.1 equiv of PdCl 2, 3.0 equiv of CuCl 2, 3.0 equiv of NaOAc in acetic acid under ca. 1 atm of CO) to give selectively cis 3-hydroxypyrrolidine 2-acetic acid lactone and its C 2 C 5 substituted derivatives in good yields (66 – 90%), respectively.
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