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417149

Sigma-Aldrich

2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

97%

Synonym(s):

4,4,5,5-Tetramethyl-2-[(propan-2-yl)oxy]-1,3,2-dioxaborolane, Isopropoxy 4,4,5,5-tetramethyl-1,3,2-dioxaborolane, Isopropoxyboronic acid pinacol ester, Isopropyl pinacol borate, Isopropylpinacolylborate

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About This Item

Empirical Formula (Hill Notation):
C9H19BO3
CAS Number:
61676-62-8
Molecular Weight:
186.06
MDL number:
MFCD00192241
UNSPSC Code:
12352103
PubChem Substance ID:
24866125
NACRES:
NA.22

Assay

97%

form

liquid

refractive index

n20/D 1.409 (lit.)

bp

73 °C/15 mmHg (lit.)

density

0.912 g/mL at 25 °C (lit.)

SMILES string

CC(C)OB1OC(C)(C)C(C)(C)O1

InChI

1S/C9H19BO3/c1-7(2)11-10-12-8(3,4)9(5,6)13-10/h7H,1-6H3

InChI key

MRWWWZLJWNIEEJ-UHFFFAOYSA-N

Application

2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane can be used as a reagent to borylate arenes and to prepare fluorenylborolane.

It can also be used in the synthesis of following intermediates for generating conjugated copolymers:
  • 9,9-Dioctyl-2,7-bis(4,4,5,5-tetramethyl1,3,2-dioxaborolane-2-yl)dibenzosilole.
  • 3,9-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5,11-di(1-decylundecyl)indolo[3,2-b]carbazole.
  • 2,7-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9-dioctylfluorene.
  • 2,7-Bis(4′,4′,5′,5′-tetramethyl-1′,3′,2′-dioxaborolan-2′-yl)-N-9′′-heptadecanylcarbazole.

Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Warning

Hazard Statements

H226,H315,H319,H335

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

109.4 °F - closed cup

Flash Point(C)

43 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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A low?bandgap poly (2, 7?carbazole) derivative for use in high?performance solar cells.
Blouin N, et al.
Advanced Materials, 19(17), 2295-2300 (2007)
Albertus J Sandee et al.
Journal of the American Chemical Society, 126(22), 7041-7048 (2004-06-04)
We report the synthesis and photophysical study of a series of solution-processible phosphorescent iridium complexes. These comprise bis-cyclometalated iridium units [Ir(ppy)(2)(acac)] or [Ir(btp)(2)(acac)] where ppy is 2-phenylpyridinato, btp is 2-(2'-benzo[b]thienyl)pyridinato, and acac is acetylacetonate. The iridium units are covalently attached
Regioselective halogen-metal exchange reaction of 3-substituted 1, 2-dibromo arenes: The synthesis of 2-substituted 5-bromobenzoic acids
Menzel K, et al.
Synlett, 2006(12), 1948-1952 (2006)
Indolo [3, 2-b] carbazole-based alternating donor?acceptor copolymers: synthesis, properties and photovoltaic application.
Zhou E, et al.
Journal of Materials Chemistry, 19(41), 7730-7737 (2009)
Ken-Tsung Wong et al.
Organic letters, 8(22), 5029-5032 (2006-10-20)
p-Tolyl-substituted ladder-type oligo(p-phenylene)s containing three, four, and five phenylene rings were readily synthesized. The uniform aryl substitution of these systems allowed us to determine the coplanarity of the pi-conjugated backbones crystallographically. The intramolecular annulations eliminate almost all of the conformational
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