Skip to Content
Merck

Key Documents

View All Documentation

139009

1,8-Diazabicyclo[5.4.0]undec-7-ene

greener alternative

98%

Synonym(s):

2,3,4,6,7,8,9,10-Octahydropyrimidol[1,2-a]azepine, DBU

Sign In to View Organizational & Contract Pricing.

Select a Size

Change View

About This Item

Empirical Formula (Hill Notation):
C9H16N2
Molecular Weight:
152.24
UNSPSC Code:
12352302
NACRES:
NA.22
PubChem Substance ID:
24848373
EC Number:
229-713-7
Beilstein/REAXYS Number:
508906
MDL number:
MFCD00006930
Assay:
98%
Concentration:
≥98%
Form:
liquid
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

Quality Level

200

vapor pressure

5.3 mmHg ( 37.7 °C)

assay

98%

form

liquid

greener alternative product characteristics

Catalysis
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

concentration

≥98%

refractive index

n20/D 1.522-1.524 (lit.)

pH

12.8 (20 °C, 10 g/L)

bp

80-83 °C/0.6 mmHg (lit.)

mp

-70 °C

density

1.018 g/mL at 25 °C (lit.)

greener alternative category

, Aligned

SMILES string

C1CCN2CCCN=C2CC1

InChI

1S/C9H16N2/c1-2-5-9-10-6-4-8-11(9)7-3-1/h1-8H2

InChI key

GQHTUMJGOHRCHB-UHFFFAOYSA-N

General description

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for catalytic efficiency. Click here for more information.
1,8-Diazabicyclo[5.4.0]undec-7-ene is a bicyclic amidine base. It is non-nucleophilic, sterically hindered, tertiary amine base in organic chemistry. It is reported to be superior to amine catalyst in Baylis-Hillman reaction. It promotes the methylation reaction of phenols, indoles and benzimidazoles with dimethyl carbonate under mild conditions.

Application

Used in a new synthesis of the ABCD ring system of Camptothecin.
1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) may be used:
  • as catalyst for carboxylic acid esterification with dimethyl carbonate
  • in the synthesis of duocarmycin and CC-1065 analogs
  • as catalyst in aza-Michael addition and Knovenegal condensation reaction
  • as base for dehalogenation of halogenated Diels-Alder adducts and the resulting activated 2,4-dienones were subjected to regio- and stereo-directed Michael additions, using Yamamoto′s reagent (CH3Cu · BF3)
  • in a new synthesis of the ABCD ring system of Camptothecin
1,8-Diazabicyclo[5.4.0]undec-7-ene may be used as an catalyst for the dissolution and activation of cellulose by a reversible reaction of its hydroxyl groups with carbon dioxide. This dissolved cellulose system can be derivatized to form cellulose mixed esters.

Features and Benefits

Strong hindered amine base.

Still not finding the right product?

Explore all of our products under 1,8-Diazabicyclo[5.4.0]undec-7-ene

pictograms

Skull and crossbonesCorrosion
GHS06,GHS05

signalword

Danger

Storage Class

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

flash_point_f

240.8 °F

flash_point_c

116 °C

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

hcodes

H301,H314

Hazard Classifications

Acute Tox. 3 Oral - Eye Dam. 1 - Skin Corr. 1B

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCBG0219V
MKAA2643
MKAA4506
89797PJ
05905KJ

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

DBU (1, 8-diazabicyclo [5.4. 0] undec-7-ene)-A Nucleophillic Base.
Ghosh N
Synlett, 2004(03), 574-575 (2004)
W C Shieh et al.
Organic letters, 3(26), 4279-4281 (2002-01-11)
1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) is a novel and active catalyst in promoting the methylation reaction of phenols, indoles, and benzimidazoles with dimethyl carbonate under mild conditions. Additional rate enhancement is accomplished by applying microwave irradiation. By incorporating tetrabutylammonium iodide, the same microwave
Synthesis of cellulose acetate propionate and cellulose acetate butyrate in a CO2/DBU/DMSO system.
Xu Q, et al.
Cellulose, 25(1), 205-216 (2018)
View All Related Papers