Description

Ethyne-1,2-Diyldiboronic Acid Dipinacol Ester is a high-value, bifunctional boronic ester building block essential for advanced organic synthesis. Its core value lies in enabling precise carbon-carbon bond formation via Suzuki-Miyaura cross-coupling reactions, a cornerstone methodology in modern pharmaceutical and materials chemistry. This compound is critically needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and organic electronics industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate Synthesis: Key building block for creating novel active pharmaceutical ingredients (APIs) and drug candidates, particularly those requiring linear, conjugated frameworks.
• Agrochemical Development: Used in the synthesis of advanced herbicides, fungicides, and plant growth regulators that require specific, rigid molecular backbones.
• Organic Electronic Materials: Serves as a precursor for conjugated polymers and small molecules used in OLEDs, organic photovoltaics (OPVs), and field-effect transistors (OFETs).
• Ligand and Catalyst Design: Employed in the preparation of sophisticated bidentate ligands for transition metal catalysis.
• Chemical Biology Probes: Utilized to synthesize molecular tools and probes for studying biological processes.
• Polymer Chemistry: Acts as a monomer or chain extender in the synthesis of specialty polymers with tailored properties.
• Academic & Industrial R&D: A fundamental reagent for methodological development in cross-coupling and C-H functionalization chemistry.

Basic Information

Product Name	Ethyne-1,2-Diyldiboronic Acid Dipinacol Ester
CAS No.	1010840-17-1
Molecular Formula	C18H30B2O4
Molecular Weight	324.05 g/mol
Synonyms	1,2-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)ethyne; 1,2-Diethynyl-1,2-diboronic Acid Dipinacol Ester; Ethynylene Diboronic Acid Pinacol Ester; B,B'-(1,2-Ethynediyl)bis[4,4,5,5-tetramethyl-1,3,2-dioxaborolane]; TMSDEA Dipinacol Ester (common abbreviation); Acetylenediboronic Acid Bis(pinacol) Ester; 1,2-Bis(pinacolboron)ethyne
EINECS	Contact for details

Quality Control

Our Ethyne-1,2-Diyldiboronic Acid Dipinacol Ester is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity, typically ≥95% (by HPLC). Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles. We adhere to relevant quality management standards to support our customers' needs in cGMP and ISO environments.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (argon or nitrogen) at 2-8°C in a cool, dry place. This material is hygroscopic (moisture-sensitive) and easily oxidized; prolonged exposure to air, moisture, or elevated temperatures must be avoided to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Heavy Metals	≤ 10 ppm

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