Bis{[1-(tert-butoxy-carbonyl)-pyrrolidin-2-yl]meth-yl} carbonate.

ABSTRACT

The asymmetric unit of the title compound, C(21)H(36)N(2)O(7), consists of two independent half-mol-ecules, the other halves being generated by twofold rotational axes. The two independent half-mol-ecules are related by a pseudo-inversion center. In one, the pyrrolidine ring adopts a twist conformation whereas in the other it is in an envelope conformation. The crystal packing is stabilized by C-H⋯O hydrogen bonds.