Description

3-Methyl-5-(4,4,5,5-Tetramethyl-[1,3,2]Dioxaborolan-2-Yl)-Benzonitrile is a high-value, multi-functional boronic ester derivative, serving as a critical synthetic intermediate in advanced organic chemistry. Its core value lies in enabling precise carbon-carbon bond formation via Suzuki-Miyaura cross-coupling reactions, a cornerstone of modern pharmaceutical and materials science research. This compound is essential for medicinal chemists and process development scientists in the pharmaceutical, agrochemical, and OLED materials industries seeking to construct complex molecular architectures with high efficiency and selectivity.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of active pharmaceutical ingredients (APIs) and drug candidates, particularly in constructing biaryl and heterobiaryl scaffolds common in kinase inhibitors and other targeted therapies.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and insecticides, where the benzonitrile moiety and boronate group offer versatile reactivity.
• Materials Science Precursor: Integral in the synthesis of organic semiconductors, liquid crystals, and metal-organic frameworks (MOFs) for applications in OLED displays, sensors, and electronic devices.
• Chemical Biology Probes: Employed in the creation of tagged molecules and bioconjugates for proteomics research and diagnostic assay development.
• Cross-Coupling Reactions: A specialized reagent for Suzuki-Miyaura cross-coupling, enabling the efficient and palladium-catalyzed formation of C-C bonds under mild conditions.
• Academic & Contract Research: A valuable tool for synthetic methodology development and complex natural product synthesis in university and CRO laboratory settings.

Basic Information

Product Name	3-Methyl-5-(4,4,5,5-Tetramethyl-[1,3,2]Dioxaborolan-2-Yl)-Benzonitrile
CAS No.	1220219-59-9
Molecular Formula	C14H18BNO2
Molecular Weight	243.11 g/mol
Synonyms	5-Cyano-3-methylphenylboronic acid pinacol ester; (5-Cyano-3-methylphenyl)boronic acid pinacol ester; 3-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile; 3-Methyl-5-(pinacolatoboron)benzonitrile; 3-Methyl-5-borono-benzonitrile pinacol ester; 1220219-59-9; 3-Methyl-5-(tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile
EINECS	Contact for details

Quality Control

Our 3-Methyl-5-(4,4,5,5-Tetramethyl-[1,3,2]Dioxaborolan-2-Yl)-Benzonitrile is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all relevant specifications. Our quality commitment supports applications requiring high-purity intermediates for GMP and research use.

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 material is light-sensitive (store away from light). Keep container tightly sealed to protect from moisture. Store away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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