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 Bis(pinacolato)diboron

  • China Shanghai UCHEM Inc. [Manufacturer]
  • Tel: 86-021-60343242
  • Fax: 86-021-51388775
  • Address: 500 Jianyun Rd Zhoupu Pudong Shanghai Shanghai,ShanghaiChina
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73183-34-3 Bis(pinacolato)diboron

  • Chemreagents is dedicated to bring high quality and cost effective chemical reagents and advanced intermediates to our global customers. Chemreagents has more than 30000 products in stock at our warehouse. In addition to the catalog products, Chemrea...
  • Min. Order: 1000
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  • United States Pure Chemistry Scientific Inc. [Manufacturer, Distributor/Wholesaler]
  • Tel: 1-857-9282050
  • Address: 108 Water Street, Room 4D Watertown,MAUnited States
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73183-34-3 Bis(pinacolato)diboron

  • Bis(pinacolato)diboron is covalent compound containing two boron atoms and 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 ...
  • Min. Order: 1000
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  • China Hunan Huateng Pharmaceutical Co. Ltd. [Manufacturer]
  • Tel: 86-0731-82251112
  • Address: Lugu Business Plaza E1, Yuelu District Changsha,HunanChina
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73183-34-3 Bis(Pinacolato)Diboron

  • Weight: 253.93856 Formula: C12H24B2O4 Melting Point: 135-140 oC
  • Min. Order: 100
  • FOB Price: RMBfalse - false /
  • China Angene International [Trading Company]
  • Tel: 86-025-57626171
  • Address: 3/F, Block D4, NO. 9 Kechuang Road Nanjing Zhongshan Science and Technology Park Nanjing, Jiangsu Province China Nanjing,JiangsuChina
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73183-34-3 Bis-(pinacolato)-diboron

  • In store Pack: Aluminum foil bag + LDPE plastic bag + Carton/Paperboard barrel 50g/100g/250g/500g/1kg/5kg/10kg/20kg
  • China Shanghai Forxine Pharmaceutical Co., Ltd [Manufacturer]
  • Tel: 86-189186-97718
  • Address: 855, Xiangyang Road, Minhang District Shanghai,ShanghaiChina
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73183-34-3 Bis(pinacolato)diboron

  • Bis(pinacolato)diboron(ycgsales03@ycphar.com) CAS No. 73183-34-3 Molecular Formula: C12H24B2O4 Molecular Weight : 253.94 Appearance White crystal powder Purity ≥99% Packaging Detail: 1kg/bag, 25kg/drum
  • China Muscle Man Camp Co.,Ltd [Manufacturer]
  • Tel: 86-027-88082232
  • Fax: 86-027-88048077
  • Address: NO. 496, Zhongshan Road, Wuchang Ddistrict, Wuhan, Hubei Province, China Wuhan,HubeiChina
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73183-34-3 Bis(pinacolato)diborane

  • China Chemrio International Limited [Manufacturer]
  • Tel: +86 574 2789 1268/ +86-139 5789 5864 (mobile)
  • Fax: +86 574 2789 1266
  • Address: Chemrio International Limited
    Room 611-612, Wante Business Center
    No.487 Yangmuqi Road,
    Hi-tech Park Ningbo, 315040,China ,China
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73183-34-3 bis(pinacolato)diboron

  • China Taiyuan RHF CO., ltd. [Manufacturers]
  • Tel: 0351-7436719
  • Fax: +86-351-7436719
  • Address: Shuangta South Alley 46,2-1, YingZe Area,Taiyuan, ShanXi ,ShanXiChina
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73183-34-3 Bis(pinacolato)diboron

  • Bis(pinacolato)diboron4,4,4',4',5,5,5',5'-Octamethyl-2,2'-bis(1,3,2-dioxaborolane), 98%
  • United States INDOFINE Chemical Co., Inc. [Manufacturer]
  • Tel: (908) 359-6778
  • Fax: (908) 359-1179
  • Address: 121 Stryker Lane
    Bldg 30, Suite 1
    Hillsborough, NJ 08844 ,United States
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73183-34-3 BIS(PINACOLATO)DIBORON

  • BIS(PINACOLATO)DIBORON
  • Switzerland CONNECT MARKETING GMBH [Manufacturer]
  • Tel: +41 81 740 58 50
  • Fax: +41 81 740 58 51
  • Address: CONNECT MARKETING GMBH
    BAHNWEG NORD 35
    CH-9475 SEVELEN/SG
    SWITZERLAND ,Switzerland
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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.