Description

Ethyl 3-[(Diethoxymethylsilyl)Oxy]-2-Butenoate is a specialized organosilicon compound that serves as a versatile building block in advanced material synthesis. Its unique structure, featuring both a silyl ether and an α,β-unsaturated ester, makes it a valuable reagent for introducing silicon-containing functional groups into polymer backbones and organic molecules. This chemical is primarily utilized by R&D chemists and process engineers in the silicone polymer, specialty coatings, and pharmaceutical intermediate sectors seeking to modify material properties or create novel hybrid materials.

Application

• Silicone Polymer Modification: Acts as a functional monomer or cross-linking agent to introduce ester and alkenyl groups into silicone resins, enhancing adhesion, compatibility with organic matrices, or providing reactive sites for further chemistry.
• Surface Treatment Agent: Used to modify inorganic surfaces (e.g., glass, silica, metals) to impart hydrophobic characteristics or create a reactive organic interface for subsequent coating applications.
• Pharmaceutical & Agrochemical Intermediates: Serves as a key synthon in the multi-step synthesis of complex molecules, leveraging the silyl-protected enol ether functionality for controlled carbon-carbon bond formation.
• Specialty Coatings & Adhesives: Incorporated into formulations to improve flexibility, weather resistance, or cross-linking density in high-performance coatings, sealants, and adhesive systems.
• Organic Synthesis Reagent: Employed in Michael addition reactions, cycloadditions, and other transformations where its silicon moiety can act as a protecting group or a directing group.
• Hybrid Material Fabrication: A precursor in sol-gel processes for creating organic-inorganic hybrid materials with tailored optical, mechanical, or surface properties.

Basic Information

Product Name	Ethyl 3-[(Diethoxymethylsilyl)Oxy]-2-Butenoate
CAS No.	3369-76-4
Molecular Formula	C11H22O4Si
Molecular Weight	246.38 g/mol
Synonyms	Ethyl (Diethoxymethylsilyl)acetoacetate; Ethyl 3-(Diethoxymethylsilyloxy)but-2-enoate; 2-Butenoic acid, 3-[(diethoxymethylsilyl)oxy]-, ethyl ester; Acetoacetic acid ethyl ester diethoxymethylsilyl enol ether; Diethoxymethylsilyl acetoacetate ethyl ester; Ethyl α-(diethoxymethylsilyl)acetoacetate; (Diethoxymethylsilyl) AcAc-OEt
EINECS	222-158-5

Quality Control

Our production of Ethyl 3-[(Diethoxymethylsilyl)Oxy]-2-Butenoate adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay by GC or HPLC, identity confirmation by FT-IR and NMR, and control of key impurities. A Certificate of Analysis (COA) detailing all specifications and test results is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation by moisture. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20/D)	1.420 - 1.430
Density (20°C)	0.98 - 1.02 g/mL

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