The title compound, C(13)H(18)N(2)O(2), is an N(4)-isopropyl-l-phenyl-alanine-based oxadiazinanone. Although the two mol-ecules in the asymmetric unit are oriented appropriately for hydrogen bonding, the distance between the donor and acceptor atoms is large enough to support only weak, if any, hydrogen bonding. The absolute configuration is known based on the known starting compounds in the sy...

In the title compound, C(20)H(34)NO(2)P, the P atom has an irregular tetra-hedral environment and exhibits S(p) chirality. In the crystal, weak inter-molecular N-H⋯O and C-H⋯O hydrogen bonds link the mol-ecules into chains extending in [010].

The title compound, C(22)H(36)NO(2)P, features a P atom bonded to a phenyl ring, a cyclo-hexyl-amine unit and the O atom of a menthyl group. In the crystal structure, inter-molecular N-H⋯O hydrogen bonds connect mol-ecules into a one-dimensional chain in the b direction.

The title compound, C(11)H(11)NO(3)S, was synthesized by the reaction of benzo[d]isothia-zol-3(2H)-one with isopropanol in toluene. The benzoisothia-zolone ring system is essentially planar, with a mean deviation of 0.018 (2) Å from the least-squares plane defined by the nine constituent atoms. In the crystal, mol-ecules are linked by weak inter-molecular C-H⋯O hydrogen bonds.