1,5-Diazabicyclo(4.3.0)non-5-ene

1,5-Diazabicyclo[4.3.0]non-5-ene

Names
IUPAC name 2,3,4,6,7,8-hexahydropyrrolo[1,2-a]pyrimidine
Other names DBN
Identifiers
CAS Number	3001-72-7 Y
ChemSpider	68826 N
Jmol interactive 3D	Image Image
InChI InChI=1S/C7H12N2/c1-3-7-8-4-2-6-9(7)5-1/h1-6H2 N Key: SGUVLZREKBPKCE-UHFFFAOYSA-N N InChI=1/C9H12N2/c10-11-8-4-2-6-9(11)5-1-3-7(8)9/h1-6H2 Key: HHCBYVLNFWNEJX-UHFFFAOYAD InChI=1S/C9H12N2/c10-11-8-4-2-6-9(11)5-1-3-7(8)9/h1-6H2 Key: HHCBYVLNFWNEJX-UHFFFAOYSA-N
SMILES C1CC2=NCCCN2C1 [N-]=[N+]3C=1CCCC23CCCC=12
Properties
Chemical formula	C7H12N2
Molar mass	124.18 g/mol
Density	1.005 g/cm3
Boiling point	95 to 98 °C (203 to 208 °F; 368 to 371 K) at 7.5 mmHg
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

1,5-Diazabicyclo[4.3.0]non-5-ene (DBN) is a chemical compound with the formula C₇H₁₂N₂.^[1] It is an amidine base used in organic synthesis. A related compound with related functions is 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU). The relatively complex nature of the formal names for DBU and DBN (hence the common use of acronyms) reflects the fact that these compounds are bicyclic and contain several functional groups.

The compounds are employed for dehydrohalogenation^[2] reactions as well as base-catalyzed rearrangements.

References

1. ↑ Savoca, Ann. C. "1,5-Diazabicyclo[4.3.0]non-5-ene" in Encyclopedia of Reagents for Organic Synthesis (Ed: L. Paquette) 2004, J. Wiley & Sons, New York. doi:10.1002/047084289X.rd010.pub2
2. ↑ Möller, Fr.; Oediger, H. "1,5-Diazabicyclo[5.4.0]undec-5-ene, a New Hydrogen Halide Acceptor" Angew. Chem., Int. Ed. Engl. , 1967, 5, 76. doi:10.1002/anie.196700761