A New Efficient Synthesis of (R,R)-2,2'-Bipyrrolidine: An Interesting Chiral 1,2-Diamine with C(2) Symmetry The authors thank BASF for a generous gift of enantiopure phenylethylamine and the Swiss National Science Foundation (grant no. 20-53967.98) for financial support
Angew Chem Int Ed Engl. 2000 Nov 17;39(22):4093-4095.
doi: 10.1002/1521-3773(20001117)39:22<4093::aid-anie4093>3.0.co;2-r.