57671-19-9

Basic information

• Product Name: 1,8-DIAZABICYCLO[5.4.0]UNDEC-7-ENE, COMPOUND WITH PHENOL (1:1)
• Synonyms: 1,8-DIAZABICYCLO[5.4.0]UNDEC-7-ENE, COMPOUND WITH PHENOL (1:1);Phenol,compoundwith2,3,4,6,7,8,9,10-octahydropyrimido[1,2-a]azepine(1:1);Phenol, compd. with 2,3,4,6,7,8,9,10-octahydropyrimido1,2-aazepine (1:1);1,8-diazabicyclo[5.4.0]undec-7-ene, compound with phenol;Phenol,compound with 2,3,4,6,7,8,9,10-octahydropyrimido [1,2-a]azepine;1,8-Diazabicyclo[5.4.0]undec-7-ene phenolate;1,8-Diazabicyclo[5.4.0]undec-7-ene phenol salt
• CAS NO: 57671-19-9
• Molecular Formula: C₆H₆O*C₉H₁₆N₂
• Molecular Weight: 246.35
• Mol File: 57671-19-9.mol
• Article Data: 3

Chemical Properties

• Flash Point: 230 °F
• Appearance: /
• Density: 1.062 g/mL at 25 °C(lit.)
• CAS DataBase Reference: 1,8-DIAZABICYCLO[5.4.0]UNDEC-7-ENE, COMPOUND WITH PHENOL (1:1)(CAS DataBase Reference)
• NIST Chemistry Reference: 1,8-DIAZABICYCLO[5.4.0]UNDEC-7-ENE, COMPOUND WITH PHENOL (1:1)(57671-19-9)
• EPA Substance Registry System: 1,8-DIAZABICYCLO[5.4.0]UNDEC-7-ENE, COMPOUND WITH PHENOL (1:1)(57671-19-9)

Safety Data

• Hazard Codes: Xn
• Statements: 22-36/38
• Safety Statements: 26
• WGK Germany: 3
• Hazardous Substances Data: 57671-19-9(Hazardous Substances Data)

Usage

General Description

1,8-DIAZABICYCLO[5.4.0]UNDEC-7-ENE, COMPOUND WITH PHENOL (1:1) is a chemical compound that consists of a bicyclic organic compound and phenol in a 1:1 ratio. 1,8-DIAZABICYCLO[5.4.0]UNDEC-7-ENE, also known as DBU, is a widely used organic base in synthetic chemistry, while phenol is a compound with antiseptic and disinfectant properties. When combined, this compound may have applications in chemical reactions, pharmaceuticals, and other industrial processes, where the unique properties of both DBU and phenol can be utilized. It is important to handle and use this chemical in accordance with safety guidelines and regulations.

Upstream product

• 6674-22-2 1,8-diazabicyclo[5.4.0]undec-7-ene 
• 108-95-2 phenol 

Relevant articles and documents

Protic ionic liquid-promoted synthesis of dimethyl carbonate from ethylene carbonate and methanol

In this work, the protic ionic liquid [DBUH][Im] (1,8-diazabicyclo[5.4.0]-7-undeceniumimidazolide) was developed as an efficient catalyst for the transesterification of ethylene carbonate with methanol to produce dimethyl carbonate. At 70 °C, up to 97% conversion of ethylene carbonate and 91% yield of dimethyl carbonate were obtained with 1 mol% [DBUH][Im] (relative to ethylene carbonate) as catalyst in 2 h. Even at room temperature, the conversion of ethylene carbonate can reach 94% and the yield of dimethyl carbonate can approach 81% for 6 h. Catalytic mechanism investigation showed the high catalytic efficiency of this ionic liquid results from the synergistic activation effect, wherein the cation can activate ethylene carbonate and the anion can activate methanol through hydrogen bond formation. Although the reusability of the ionic liquid need to be further improved, high efficiency and commercial availability of [DBUH][Im] render it a promising catalyst for the preparation of dimethyl carbonate.

METHODS OF DEPOLYMERIZING TEREPHTHALATE POLYESTERS

A method comprises forming a reaction mixture comprising a terephthalate polyester, a glycol comprising 2 to 5 carbons, and an amidine organocatalyst; and heating the reaction mixture at a temperature of about 120° C. or more to depolymerize the terephthalate polyester, thereby forming a terephthalate reaction product comprising a monomeric dihydroxy terephthalate diester; wherein the terephthalate reaction product contains terephthalate oligomers in an amount less than the amount of terephthalate oligomers that would result from i) substituting the amidine organocatalyst with an equimolar amount of a guanidine catalyst and ii) depolymerizing the terephthalate polyester under otherwise identical reaction conditions.