Home > Name List By 4 > 4,4,5,5-tetramethyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,3, 2-dioxaborolane

CAS No 73183-34-3 , 4,4,5,5-tetramethyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,3,
2-dioxaborolane

  • Name: 4,4,5,5-tetramethyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,3,
    2-dioxaborolane
  • Synonyms: 73183-34-3; bis(pinacolato)diborane; Bis(2,2,3,3-tetramethyl-2,3-butanedionato)diboron;4,4,5,5-tetramethyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,3,
    2-dioxaborolane;
  • CAS Registry Number:
  • Melting Point: 135-140 ºC
  • Flash Point: 88.4 ºC
  • Boiling Point: 222.6 ºC at 760 mmHg
  • Density: 0.97 g/cm3
  • Refractive index: 1.432
  • Safety Statements: R36/37/38
  • Hazard Symbols: Xi: Irritant;
  • Flash Point: 88.4 ºC
  • Molecular Weight: 253.93856
  • InchiKey: IPWKHHSGDUIRAH-UHFFFAOYSA-N
  • InChI: InChI=1S/C12H24B2O4/c1-9(2)10(3,4)16-13(15-9)14-17-11(5,6)12(7,
    8)18-14/h1-8H3
  • Risk Statements: S26;S37/39
  • Molecular Formula: C12H24B2O4
  • Molecular Structure:CAS No:73183-34-3 4,4,5,5-tetramethyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,3,<br />2-dioxaborolane
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73183-34-3 YL-B104 BIS(PINACOLATO)DIBORON

  • China Shanghai YILAN Materials Co., Ltd. [Manufacturer]
  • Tel: +86-21-50793218/ +86-013564624040 (mobile)
  • Fax: +86-21-56384326
  • Address: Shanghai YILAN Materials Co., Ltd.
    Room 508, Building 1, No. 88 Cailun Road,
    Zhangjiang High-Tech Park,
    Pudong, Shanghai 201203,
    P.R. China null,nullChina
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73183-34-3 BIS(PINACOLATO)DIBORON

  • BIS(PINACOLATO)DIBORON, >=97%
  • United States D-L Chiral Chemicals, LLC [Manufacturer]
  • Tel: 732-668-8759
  • Fax: 732-359-1599
  • Address: 53 Champlain Road08852 Monmouth JunctionUNITED STATES 08852 Monmouth Junction,nullUnited States
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73183-34-3 bis(pinacolato)diboron

  • China newchemphy [Manufacturers]
  • Tel: +86-411-39224850
  • Fax: +86-411-39224850
  • Address: chaoyian53# dalian,liaoningChina
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73183-34-3 bis(pinacolato)diboron

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73183-34-3 Bis(pinacolato)diboron

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73183-34-3 bis(pinacolato)diboron

  • Switzerland HETCAT [Importer/Exporter]
  • Tel: 0041 76 319 21 42
  • Fax: 0041-61-363 98 69
  • Address: Gundeldingerstrasse 174 4053 Basel Switzerland Basel,BaselSwitzerland
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73183-34-3 Bis(pinacolato)diborane

  • China SinoRefine CO.,LTD. null
  • Fax: 021-64955159
  • Address: Caohejing Hi-TECH Park Shanghai China, null,nullChina
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73183-34-3 Bis(pinacolato)diborane

  • China Dalian Allychem Co., Ltd. [Manufacturers]
  • Tel: +86-(411)-8754-9848
  • Fax: +86-(411)-8754-9748
  • Address: Building C, Biopharmaceutical R&D Center, No. 18, DD5 Street, DD Port, Dalian 11662, Dalian,liaoningChina
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73183-34-3 2-Bromoanthracene

  • 2-Bromoanthracene, 98%
  • Min. Order: 1kg
  • China Ningbo Yuanfang Biochemicals Co.,Ltd [Manufacturer]
  • Tel: 0574-27862437,27862438
  • Fax: 0574-27862439
  • Address: 5F-3, #54 Dashani Street Ningbo China315000 NingboCHINA Ningbo,nullChina
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73183-34-3 bis(pinacolato)diboron

  • China wuhan bright chemical co.,ltd [Manufacturers]
  • Tel: +86-27-85556253
  • Fax: +86-27-85804899
  • Address: Room 9F-C11,Caishen quare,east of hankou railway station wuhan china wuhan,hubeiChina
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References of 4,4,5,5-tetramethyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,3,
2-dioxaborolane
Title: Bis(pinacolato)diborane
CAS Registry Number: 73183-34-3
CAS Name: 4,4,4¢,4¢,5,5,5¢,5¢-Octamethyl-2,2¢-bi-1,3,2-dioxaborolane
Synonyms: Miyaura's reagent; pinacol diborane; 4,4,5,5-tetramethyl-1,3,2-dioxaborolan-1-yl-4¢,4¢,5¢,5¢-tetramethyl-1¢,3¢,2¢-dioxaborolan; B2pin2
Molecular Formula: C12H24B2O4
Molecular Weight: 253.94
Percent Composition: C 56.76%, H 9.53%, B 8.51%, O 25.20%
Literature References: Boron source for organic syntheses. Prepn and crystal structure: H. N?th, Z. Naturforsch. 39b, 1463 (1984). Synthesis: T. Ishiyama et al., Org. Synth. 77, 176 (2000). NMR spectroscopic data: W. Biffar et al., Ber. 113, 333 (1980). First use as boron source in Pt-catalyzed diboration of alkynes: T. Ishiyama et al., J. Am. Chem. Soc. 115, 11018 (1993). Stereospecific synthesis via cross coupling with aromatic amine: C. Malan, C. Morin, J. Org. Chem. 63, 8019 (1998). Rh-catalyzed activation of the C-H bond: Y. Kondo et al., J. Am. Chem. Soc. 124, 1164 (2002). Brief review: X. Liu, Synlett 2003, 2442-2443.
Properties: Colorless plates, mp 138°. Crystalline form can be handled in air and stored in capped bottle.
Melting point: mp 138°
Use: As a boron source in Pt-mediated diborations, coupling reactions; in Rh-or Ir-mediated borylations of alkanes and arenes, and in carbenoid chemistry.