Description

2-Allenyl-4,4,5,5-Tetramethyl-1,3,2-Dioxaborolane is a specialized organoboron building block, specifically an allenyl boronic ester, valued for its unique reactivity in advanced synthetic chemistry. Its core value lies in enabling efficient, stereoselective carbon-carbon bond formation, which is critical for constructing complex molecular architectures. This compound is essential for researchers and process chemists in the pharmaceutical, agrochemical, and materials science industries who require high-purity intermediates for cross-coupling and allylation reactions.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs) and complex natural product analogs via Suzuki-Miyaura and other cross-coupling reactions.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides that require the incorporation of allenyl or propargylic functional groups.
• Material Science Research: Serves as a monomer or functionalization agent in the creation of advanced polymers and organic electronic materials with tailored properties.
• Organic Synthesis Building Block: Enables the stereoselective introduction of allenyl groups for the construction of complex organic molecules in academic and industrial R&D settings.
• Ligand and Catalyst Development: Employed in the preparation of novel boron-containing ligands and catalysts for asymmetric synthesis.

Basic Information

Product Name	2-Allenyl-4,4,5,5-Tetramethyl-1,3,2-Dioxaborolane
CAS No.	865350-17-0
Molecular Formula	C11H19BO2
Molecular Weight	194.08 g/mol
Synonyms	Allenylboronic Acid Pinacol Ester; 2-Allenyl-2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)ethene; 1,1,2-Propadien-1-ylboronic Acid Pinacol Ester; Allenyl Pinacol Boronate; AllenylBpin; (Propa-1,2-dien-1-yl)boronic Acid Pinacol Ester
EINECS	Contact for details

Quality Control

Our 2-Allenyl-4,4,5,5-Tetramethyl-1,3,2-Dioxaborolane is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity for demanding synthetic applications. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay (by NMR or HPLC), identity confirmation, and impurity profiles. Our quality management system supports compliance with cGMP and ISO standards for research and commercial-scale supply.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at temperatures between 2°C and 8°C (refrigerated) or as specified on the label. Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under an inert atmosphere (argon or nitrogen) when not in use to prevent degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (NMR)	≥ 95.0%
Purity (HPLC)	≥ 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.