Description

Di-tert-Butylmethylphosphonium Tetraphenylborate is a specialized organophosphonium salt with the CAS number 853073-44-6, valued for its role as a highly effective and selective phase-transfer catalyst and reagent in advanced organic synthesis. Its unique structure provides exceptional utility in facilitating challenging reactions under mild conditions, offering chemists a powerful tool for process optimization. This compound is primarily sought by R&D laboratories and production facilities in the pharmaceutical, agrochemical, and specialty chemical sectors for the development of novel active ingredients and high-value intermediates.

Application

• As a phase-transfer catalyst (PTC) in alkylation, esterification, and polymerization reactions.
• As a key reagent for the generation of reactive phosphonium ylides in Wittig olefination reactions.
• In the synthesis of pharmaceutical intermediates, particularly for complex, multi-step organic transformations.
• For catalyst research and development in asymmetric synthesis and organocatalysis.
• In the preparation of ionic liquids and specialty electrolytes for advanced material science.
• As a precursor for ligand synthesis in coordination chemistry and homogeneous catalysis.

Basic Information

Product Name	Di-tert-Butylmethylphosphonium Tetraphenylborate
CAS No.	853073-44-6
Molecular Formula	C₃₃H₄₈BP
Molecular Weight	486.52 g/mol
Synonyms	Di-tert-butylmethylphosphonium tetraphenylborate; Di-tert-butylmethylphosphanium tetraphenylborate; Methyl-di-tert-butylphosphonium tetraphenylborate; Tetraphenylborate di-tert-butylmethylphosphonium salt; P,M,P'-Tri-tert-butylmethylphosphonium tetraphenylborate; Phosphonium, di-tert-butylmethyl-, tetraphenylborate(1-); (Di-tert-butylmethylphosphonio)tetraphenylborate
EINECS	Contact for details

Quality Control

Our Di-tert-Butylmethylphosphonium Tetraphenylborate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including NMR, HPLC, and elemental analysis, to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical specifications are provided and available upon request, supporting your quality assurance and regulatory compliance 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 material is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere or in a desiccator to prevent degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	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.