Description

1,1-Diethoxyethylene is a versatile acetal derivative and a key protected form of acetaldehyde, widely used as a crucial building block in organic synthesis. Its high reactivity as an enol ether makes it an indispensable reagent for introducing the acetaldehyde moiety under controlled conditions. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and fine chemical industries, enabling the synthesis of complex molecules, heterocycles, and specialty polymers.

Application

• Pharmaceutical Intermediates: A critical reagent in the synthesis of various active pharmaceutical ingredients (APIs), particularly for constructing heterocyclic cores and side chains.
• Agrochemical Synthesis: Used in the production of pesticides, herbicides, and fungicides as a protected acetaldehyde equivalent.
• Fine Chemical Manufacturing: Serves as a versatile building block for fragrances, flavors, and other specialty organic compounds.
• Polymer Chemistry: Acts as a monomer or co-monomer in the production of specialty polymers and resins.
• Organic Synthesis Reagent: Employed in aldol-type reactions, Grignard additions, and as a precursor for vinyl ethers in various name reactions.
• Cross-coupling Reactions: Utilized as a coupling partner in palladium-catalyzed reactions for C-C bond formation.

Basic Information

Product Name	1,1-Diethoxyethylene
CAS No.	2678-54-8
Molecular Formula	C6H12O2
Molecular Weight	116.16 g/mol
Synonyms	Acetaldehyde Diethyl Acetal; Ethylidene Diethyl Ether; 1,1-Diethoxyethene; Diethoxyethylene; Acetaldehyde Diethyl Acetal (enol form); EINECS 220-219-7
EINECS	220-219-7

Quality Control

Our 1,1-Diethoxyethylene is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including GC, NMR, and Karl Fischer titration, to ensure high purity and consistency. A Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment, ensuring full traceability and compliance with customer specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat, sparks, and open flames. Due to its highly volatile nature, keep containers tightly sealed when not in use. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Impurities (GC)	≤ 1.0% (total)
Refractive Index (n20D)	1.380 - 1.385
Density (20°C)	0.825 - 0.835 g/mL

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.