Description

2-(5,5-Dimethylcyclopent-1-Enyl)-4,4,5,5-Tetramethyl-1,3,2-Dioxaborolane is a high-purity, advanced boronic ester building block essential for modern synthetic chemistry. This compound is valued for its stability and reactivity, serving as a critical intermediate in the construction of complex molecular architectures. It is primarily utilized by pharmaceutical R&D teams and fine chemical manufacturers engaged in cross-coupling reactions, such as Suzuki-Miyaura couplings, to develop new active pharmaceutical ingredients (APIs) and specialty materials.

Application

• Pharmaceutical Intermediate: A key reagent in the synthesis of novel drug candidates, particularly in constructing complex carbocyclic and heterocyclic frameworks via palladium-catalyzed cross-coupling reactions.
• Agrochemical Synthesis: Used in the research and development of new active ingredients for crop protection products, enabling the introduction of the dimethylcyclopentenyl moiety.
• Material Science Research: Serves as a precursor for creating advanced organic electronic materials, including polymers and small molecules for OLEDs and organic photovoltaics.
• Ligand and Catalyst Development: Employed in the preparation of specialized ligands and organometallic catalysts for asymmetric synthesis and other catalytic processes.
• Chemical Biology Probes: Utilized to synthesize labeled compounds and molecular probes for studying biological pathways and target engagement.
• Academic & Industrial R&D: A fundamental tool in organic synthesis laboratories for method development and exploring new chemical space.

Basic Information

Product Name	2-(5,5-Dimethylcyclopent-1-Enyl)-4,4,5,5-Tetramethyl-1,3,2-Dioxaborolane
CAS No.	1011531-89-7
Molecular Formula	C15H25BO2
Molecular Weight	248.17 g/mol
Synonyms	5,5-Dimethyl-1-cyclopenten-1-ylboronic acid pinacol ester; (5,5-Dimethylcyclopent-1-en-1-yl)boronic acid pinacol ester; 2-(5,5-Dimethyl-1-cyclopenten-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane; 5,5-Dimethyl-1-cyclopenten-1-yl-Bpin; Dimethylcyclopentenyl pinacol boronate; Pinacol (5,5-dimethylcyclopent-1-en-1-yl)boronate; 1011531-89-7
EINECS	Contact for details

Quality Control

Our 2-(5,5-Dimethylcyclopent-1-Enyl)-4,4,5,5-Tetramethyl-1,3,2-Dioxaborolane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including NMR (¹H, ¹³C, ¹¹B) and HPLC/GC analysis, to ensure high chemical purity and identity. Certificates of Analysis (COA) detailing all specifications are provided with every shipment. We support cGMP and ISO compliant production for critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a recommended temperature of 2-8°C for long-term stability. This product is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (argon or nitrogen) to prevent degradation. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or low-melting solid
Identification (NMR)	Conforms to structure
Purity (HPLC/GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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