Ruthenium (II) catalyzed ring closure of prochiral α-chloro-N-tosyl amides: A diastereoselectivity study.
摘要:
Prochiral N-tosyl amides cyclized under (Ph3P)3RuCl2 catalysis gave diastereomeric 2-pyrrolidinone products. Stereoselectivity depended upon the size of C2-substitutents
Halogen atom transfer radical cyclization of N-allyl-N-benzyl-2,2-dihaloamides to 2-pyrrolidinones, promoted by Fe0-FeCl3 or CuCl-TMEDA
摘要:
The halogen atom transfer radical cyclization of a N-allyl-N-benzyl-2,2-dihaloamides to 2-pyrrolidinones has been carried out in high yields under mild conditions, in a reaction promoted by CuCl-TMEDA or Fe-0-FeCl3 in acetonitrile or N,N-dimethylformamide, respectively. (C) 1997 Elsevier Science Ltd.