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Merck

345571

1,5,7-Triazabicyclo[4.4.0]dec-5-ene

98%

Synonym(s):

1,3,4,6,7,8-Hexahydro-2H-pyrimido[1,2-a]pyrimidine, Hhpp, TBD

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About This Item

Empirical Formula (Hill Notation):
C7H13N3
CAS Number:
Molecular Weight:
139.20
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
227-367-1
Beilstein/REAXYS Number:
3242
MDL number:
Assay:
98%
Form:
crystals
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Quality Segment

assay

98%

form

crystals

mp

125-130 °C (lit.)

solubility

acetonitrile: soluble, ethanol: soluble, organic solvents: soluble, water: soluble

SMILES string

C1CNC2=NCCCN2C1

InChI

1S/C7H13N3/c1-3-8-7-9-4-2-6-10(7)5-1/h1-6H2,(H,8,9)

InChI key

FVKFHMNJTHKMRX-UHFFFAOYSA-N

General description

1,5,7-Triazabicyclo[4.4.0]dec-5-ene, a bicyclic guanidine base, has been found to be an excellent catalyst for Michael and Michael-type reactions. It forms 1:1 complex with lasalocid acid and crystal structure of the complex has been studied by X-ray diffraction, FT-IR spectroscopy and 1H NMR.

Application

1,5,7-Triazabicyclo[4.4.0]dec-5-ene may be used as organocatalyst for aminolysis of esters. It may be used as catalyst for direct addition of P(O)-H bonds (dialkyl phosphites and diphenyl phosphonite) across various activated alkenes. Polymer supported 1,5,7-triazabicyclo[4.4.0]dec-5-ene (PTBD) was used as a base and a reagent scavenger for the synthesis of aryl ethers from phenols and alkyl or aryl halides.


pictograms

CorrosionExclamation mark

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Skin Corr. 1A

Storage Class

8A - Combustible corrosive hazardous materials

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges



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