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Bis(pinacolato)diboron  CAS 73183-34-3  IN Stock  Bis(pinacolato)diboron

4,4,4',4',5,5,5',5'-Octamethyl-2,2'-bi-1,3,2-dioxaborolane

73183-34-3  CAS 73183-34-3  highly quality and immedaite delivery

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Bis(pinacolato)diboron CAS 73183-34-3

4,4,4',4',5,5,5',5'-Octamethyl-2,2'-bi-1,3,2-dioxaborolane CAS 73183-34-3

Name:    Bis(pinacolato)diboron
Synonyms:    BIS(2,2,3,3-TETRAMETHYL-2,3-BUTANEDIONATO)DIBORON;BIS(PINACOLATO)DIBORANE;BIS(PINACOLATO)DIBORON;DIBORON PINACOL ESTER;4,4,4',4',5,5,5',5'-OCTAMETHYL-2,2'-BL-1,3,2-DIOXABOROLANE;4,4,4',4',5,5,5',5'-OCTAMETHYL-2,2'-BIS(1,3,2-DIOXABOROLANE);4,4,4',4',5,5,5',5'-OCTAMETHYL-2,2'-BI-1,3,2-DIOXABOROLANE;4,4,4',4',5,5,5',5'-OCTAMETHYL-2,2-BI-1,3,2-DIOXABOROLANE
CAS:    73183-34-3
MF:    C12H24B2O4
MW:    253.93856
EINECS:    615-925-0
 Bis(pinacolato)diboron is a boron containing two pinacolato ligands. It has the formula [(CH3)4C2O2B]2; the pinacol groups are sometimes abbreviated as "pin", so the structure is sometimes represented as B2pin2. It is a colourless solid that is soluble in organic solvents. It is a commercially available reagent for making pinacol boronic esters for organic synthesis.
4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl-4',4',5',5'-tetramethyl-1,3,2-dioxaborolane; BIS(PINACALATO)DIBORON; Bis (pinacoloto)diboron; B2Pin2; 7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydroisoquinolin-1(2H)-one;
4,4,4',4',5,5,5',5'-Octamethyl-2,2'-Bi-1,3,2-Dioxaborolane; Bis-(Pinacolato)-Diboron; Bis(2,2,3,3-Tetramethyl-2,3-Butanedionato)Diboron; Diboron Pinacol Ester; 4,4,4',4',5,5,5',5'-Octamethyl-2,2'-Bi-1,3,2-Dioxaborolane; Bispinacolatodiboronmin
Appearance & Physical State     white to off-white powder
Density     0.97 g/cm3
Boiling Point     222.6ºC at 760 mmHg
Melting Point     135-140ºC
Flash Point     88.4ºC
Refractive Index     1.432
Storage Condition     0-6ºC
Safety Info
Safety Statements     S26-S37/39
HS Code     2934999090
Product Categories:    -;Pharmaceutical Intermediates;Boron Compounds;blocks;BoronicAcids;OLED materials,pharm chemical,electronic;Miscellaneous;Small molecule;Aliphatics;Boronic Acids & Esters;DIBORON SERIES;Reagent;Organoborons;Diboron Esters;B (Classes of Boron Compounds);CHIRAL CHEMICALS;Boronic Acids & Esters
Mol File:    73183-34-3.mol
Bis(pinacolato)diboron Structure
Bis(pinacolato)diboron Chemical Properties
Melting point     137-140 °C(lit.)
density     0.98
storage temp.     0-6°C
form     Powder or Platelets
color     White
Water Solubility     Soluble in tetrahydrofuran, dichloromethane, toluene, hexane and heptane. Insoluble in water.
HS Code     29349990
 MSDS Information
Bis(pinacolato)diboron Usage And Synthesis
white crystal powder
Uses    suzuki reaction
Uses    Bis(pinacolato)diboron is used as a condensation agent in the preparation poly(arylene)s. Bis(pinacolato)diboron is an organoboranate with potential use as matrix metallo-proteinase (MMP-2) inhibitor.
Uses    As a boron source in Pt-mediated diborations, coupling reactions; in Rh-or Ir-mediated borylations of alkanes and arenes, and in carbenoid chemistry.
Bis(pinacolato)diboron Preparation Products And Raw materials
Preparation Products    TERT-BUTYL 5-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)ISOINDOLINE-2-CARBOXYLATE-->4-Nitrophenylboronic acid-->4-AMINO-3-METHOXYPHENYLBORONIC ACID, PINACOL ESTER
Raw materials    Ethyl acetate-->Sodium-->PETROLEUM ETHER-->Toluene-->Cyclohexane-->Pentane-->Tetrahydro pyrrole-->Boron tribromide-->Pinacol

Our main production base is located in Xuzhou industry park. We produce a wide range of organics including Active pharmaceutical ingredients(APIs), Veterinary, Indole derivatives, Aromatics, Fluorine, Boronic acids, organocatalysts, chiral building blocks, heterocyclic compounds. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block as well as Tailor-made fine chemicals. Our manufactory specialised in extreme temperature conditions (-100oC to +300oC), hydrogenations reaction under high pressure, suzuki coupling reaction, photochemical reaction, Mitsunobu reactions, enantioselective reactions and asymmetric synthesis.we specialize in developing innovative processes for the synthesis of a wide range of products. we also undertake custom synthesis and contract manufacturing. We have Strong quality control system: Strength of our ethical commitment to quality control and quality assurance systems firmly based on ISO standard. QA and QC used in the whole process of raw materal control, process control and finished product quality inspection. Oue company has passed has passed the ISO9001:2008 .We have flexible payment terms with all of our clients: Various payment terms such as L/C,D/P,D/A and T/T will be accepted. we've been authorized the import&export qualification by the government and also has passed the “iso 9001-2008 quality management system” certification. Our company has strong R&D ability and production experience to provide the customers new APIs. We specialize in developing innovative processes for the synthesis of a wide range of products. We also undertake custom synthesis and contract manufacturing.we always stand on the quality of product as our life, develop in the direction of customers requirement and aim at creating greater value for customers.innovation and honesty, we will make common development with the masses of customers at home and abroad hand in hand by our best service.the aim of qdsigma is a quality policy that "elements in the system all have been satisfied, personnel has been trained; every batch of material is checked, each procedure guarantees the quality; every bag of our products is top grade, service is thoughtful all the time, quality and reputation to increase market share and promote enterprise development. the quality, colors and forms of our products have reached a high level in related chemical industry, which relies on characteristic and advanced processing technology and it has gained a high and reliable reputation from customers at both quality and services. the aim of qdsigma is a quality policy that "elements in the system all have been satisfied, personnel has been trained; every batch of material is checked, each procedure guarantees the quality; every bag of our products is top grade, service is thoughtful all the time, quality and reputation to increase market share and promote enterprise development. the quality, colors and forms of our products have reached a high level in related chemical industry, which relies on characteristic and advanced processing technology and it has gained a high and reliable reputation from customers at both quality and services.our concept,1.client is first. 2.credibility is the most important.3.quality control is our life.4.great sense of responsibility.5.we will be responsible for not only our products, our clients, also the society.the corporation's slogan：reliable, professional, cooperative and innovative.the corporation's philosophy: widely absorb different excellent views and ideas from all over the world.the corporation's destination: we will constantly strive to supply customers with new and high-tech products and will keep the leadership in the field. Think Chemistry,Think CHemWill.

5) Supply, technological advantages, etc.

Chemwill Asia co.,Ltd is one of the leading manufacturer in CHINA.Our main production base is located in Xuzhou industry park. We produce a wide range of organics including Active pharmaceutical ingredients(APIs), Veterinary, Indole derivatives, Aromatics, Fluorine, Boronic acids, organocatalysts, chiral building blocks, heterocyclic compounds. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block as well as Tailor-made fine chemicals. Our manufactory specialised in extreme temperature conditions (-100oC to +300oC), hydrogenations reaction under high pressure, suzuki coupling reaction, photochemical reaction, Mitsunobu reactions, enantioselective reactions and asymmetric synthesis.we specialize in developing innovative processes for the synthesis of a wide range of products. we also undertake custom synthesis and contract manufacturing. We have Strong quality control system: Strength of our ethical commitment to quality control and quality assurance systems firmly based on ISO standard. QA and QC used in the whole process of raw materal control, process control and finished product quality inspection. Oue company has passed has passed the ISO9001:2008 .We have flexible payment terms with all of our clients: Various payment terms such as L/C,D/P,D/A and T/T will be accepted. we've been authorized the import&export qualification by the government and also has passed the “iso 9001-2008 quality management system” certification. Our company has strong R&D ability and production experience to provide the customers new APIs. We specialize in developing innovative processes for the synthesis of a wide range of products. We also undertake custom synthesis and contract manufacturing.we always stand on the quality of product as our life, develop in the direction of customers requirement and aim at creating greater value for customers.innovation and honesty, we will make common development with the masses of customers at home and abroad hand in hand by our best service.the aim of qdsigma is a quality policy that "elements in the system all have been satisfied, personnel has been trained; every batch of material is checked, each procedure guarantees the quality; every bag of our products is top grade, service is thoughtful all the time, quality and reputation to increase market share and promote enterprise development. the quality, colors and forms of our products have reached a high level in related chemical industry, which relies on characteristic and advanced processing technology and it has gained a high and reliable reputation from customers at both quality and services. the aim of qdsigma is a quality policy that "elements in the system all have been satisfied, personnel has been trained; every batch of material is checked, each procedure guarantees the quality; every bag of our products is top grade, service is thoughtful all the time, quality and reputation to increase market share and promote enterprise development. the quality, colors and forms of our products have reached a high level in related chemical industry, which relies on characteristic and advanced processing technology and it has gained a high and reliable reputation from customers at both quality and services.our concept,1.client is first. 2.credibility is the most important.3.quality control is our life.4.great sense of responsibility.5.we will be responsible for not only our products, our clients, also the society.the corporation's slogan：reliable, professional, cooperative and innovative.the corporation's philosophy: widely absorb different excellent views and ideas from all over the world.the corporation's destination: we will constantly strive to supply customers with new and high-tech products and will keep the leadership in the field. Think Chemistry,Think CHemWill.

Chemwill Asia co.,Ltd is one of the leading manufacturer in CHINA. 

Our main production base is located in Xuzhou industry park. We produce a wide range of organics including Basic chemicals , Fine chemicals,  Active pharmaceutical ingredients(APIs), Veterinary,  Indole derivatives, Aromatics, Fluorine, Boronic acids, organocatalysts, chiral building blocks, heterocyclic compounds. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place. 

Our R&D team masters core technology for process-design of target building block as well as Tailor-made fine chemicals. Our manufactory specialised in extreme temperature conditions (-100ºC to +300ºC), hydrogenations reaction under high pressure, suzuki coupling reaction, photochemical reaction, Mitsunobu reactions, enantioselective reactions and asymmetric synthesis. 

Think Chemistry,Think CHemWill

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