1,2-diaminocyclohexane

trans-1,2-Diaminocyclohexane

Names
IUPAC name (±)-trans-1,2-Cyclohexanediamine
Other names 1,2-Diaminocyclohexane; chxn
Identifiers
CAS Number	1121-22-8 N
3D model (JSmol)	Interactive image
ChemSpider	420572 Y
ECHA InfoCard	100.112.387
PubChem CID	479307
InChI InChI=1S/C6H14N2/c7-5-3-1-2-4-6(5)8/h5-6H,1-4,7-8H2/t5-,6-/m0/s1 Y Key: SSJXIUAHEKJCMH-WDSKDSINSA-N Y InChI=1/C6H14N2/c7-5-3-1-2-4-6(5)8/h5-6H,1-4,7-8H2/t5-,6-/m0/s1 Key: SSJXIUAHEKJCMH-WDSKDSINBK
SMILES N[C@H]1CCCC[C@@H]1N
Properties
Chemical formula	C6H14N2
Molar mass	114.19 g·mol−1
Appearance	Colorless liquid
Density	0.951 g/cm3
Melting point	14 to 15 °C (57 to 59 °F; 287 to 288 K)
Boiling point	79 to 81 °C (174 to 178 °F; 352 to 354 K) 15 mm Hg
Hazards
Flash point	69 °C; 156 °F; 342 K
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YN ?)
Infobox references

trans-1,2-Diaminocyclohexane is an organic compound with the formula C₆H₁₀(NH₂)₂. This diamine is a building block for chiral ligands that are useful in asymmetric catalysis.

A mixture of cis- and trans-1,2-diaminocyclohexane is produced by the hydrogenation of o-phenylenediamine. The racemic trans isomer [1:1 mixture of (1R,2R)-1,2-diaminocyclohexane and (1S,2S)-1,2-diaminocyclohexane] can be separated into the two enantiomers using enantiomerically pure tartaric acid as the resolving agent.

Representative ligands prepared from (1R,2R)- or (1S,2S)-1,2-diaminocyclohexane are diaminocyclohexanetetraacetic acid (CyDTAH₄), Trost ligand, and the salen analogue used in the Jacobsen epoxidation.