Crystal structure of (1S,2R,4S)-1-[(morpholin-4-yl)meth-yl]-4-(prop-1-en-2-yl)cyclo-hexane-1,2-diol.

The asymmetric unit of the title compound, C14H25NO3, contains two independent mol-ecules with similar geometry. The morpholine and cyclo-hexane rings of both mol-ecules adopt a chair conformation. Intra-molecular O-H⋯N hydrogen bonds are observed.

Calcium trifluoroacetate as an efficient catalyst for ring-opening of epoxides by amines under solvent-free conditions.

Ca(CF3CO2)2 efficiently catalyzed the selective ring-opening of epoxides by amines leading to the synthesis of β-aminoalcohols. The reaction works well with various aromatic and aliphatic amines under solvent-free conditions. Corresponding β-aminoalcohols were obtained in excellent yields with high regioselectivity.

12-{[4-(2-Fluoro-phen-yl)piperazin-1-yl]-meth-yl}-9α-hy-droxy-4,8-dimethyl-3,14-dioxatricyclo-[9.3.0.0]tetra-dec-7-en-13-one.

The title compound, C(25)H(33)FN(2)O(4), was synthesized from 9α-hy-droxy-parthenolide (9α-hy-droxy-4,8-dimethyl-12-methyl-ene-3,14-dioxatricyclo-[9.3.0.

10α-Hy-droxy-13-{[4-(4-meth-oxy-phen-yl)piperazin-1-yl]meth-yl}-4,9-dimethyl-3,8,15-trioxatetra-cyclo-[10.3.0.0.0]penta-decan-14-one.

The title compound, C(26)H(36)N(2)O(6), was synthesized from 9α-hy-droxy-parthenolide (9α-hy-droxy-4,8-dimethyl-12-methylen-3,14-dioxa-tricyclo-[9.3.0.

2-(Naphthalen-1-yl-amino)-cyclo-hexa-nol.

The title compound, C(16)H(19)NO, was synthesized under solvent-free conditions by reaction of 7-oxa-bicyclo-[4.1.0]heptane and naphthalen-1-amine in the presence of Ca(CF(3)COO)(2) as catalyst.

(1S,2R,4S)-1-[(Benzyl-amino)-meth-yl]-4-(prop-1-en-2-yl)cyclo-hexane-1,2-diol.

The title compound, C(17)H(25)NO(2), was synthesized by epoxidation of the double bond of (S)-perillyl alcohol [(S)-4-isopropenyl-1-cyclo-hexenyl-methanol], followed by the oxirane ring-opening by benzyl-amine using [Ca(CF(3)CO(2))(2)] as catalyst under solvent-free condition at 313 K. The mol-ecular conformation is stabilized by an intra-molecular O-H⋯N hydrogen bond. In the crystal, mol-ecules are linked by inter-molecular N-H⋯O hydrogen bonds, forming chains parallel to the a axis, which are further connected by O-H⋯O hydrogen bonds into sheets parallel to (010).