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452920

Trimethyl borate

≥98%

Synonym(s):

Boric acid trimethyl ester, Methyl borate

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About This Item

Linear Formula:
B(OCH3)3
CAS Number:
121-43-7
Molecular Weight:
103.91
EC Number:
204-468-9
UNSPSC Code:
12352103
NACRES:
NA.22
PubChem Substance ID:
24868738
Beilstein/REAXYS Number:
1697939
MDL number:
MFCD00008346
Assay:
≥98%
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vapor density

3.59 (vs air)

Quality Level

200

assay

≥98%

refractive index

n20/D 1.346 (lit.)

bp

68-69 °C (lit.)

mp

−34 °C (lit.)

density

0.932 g/mL at 20 °C (lit.)

SMILES string

COB(OC)OC

InChI

1S/C3H9BO3/c1-5-4(6-2)7-3/h1-3H3

InChI key

WRECIMRULFAWHA-UHFFFAOYSA-N

Application

Trimethyl borate reacts with a Grignard reagent or organolithium compounds to yield dimethyl boronates, which upon subsequent aqueous acid treatment afford corresponding boronic acids. The resultant boronic acids or esters are useful intermediates in various cross-coupling reactions such as Suzuki coupling and Chan-Lam coupling. It is also used in the preparation of sodium borohydride.

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Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Irrit. 2 - Flam. Liq. 2 - Repr. 1B - STOT SE 1

target_organs

Eyes

Storage Class

3 - Flammable liquids

wgk

WGK 1

flash_point_f

12.2 °F - (own results)

flash_point_c

-11 °C - (own results)

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Regulatory Information

危险化学品

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Certificates of Analysis (COA)

Lot/Batch Number
SHBT2670
SHBS8105
SHBS4897
SHBR1475
SHBP0957

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Related Content

Sheppard Group – Prof. Product Portal

Research spans transition-metal catalysis, boron chemistry, organocatalysis, multicomponent reactions, and sustainable methods.

Boronic esters in stereodirected synthesis.
Matteson D S
Tetrahedron, 45(7), 1859-1885 (1989)
The Preparation of Sodium Borohydride by the High Temperature Reaction of Sodium Hydride with Borate Esters1.
Schlesinger H I, et al.
Journal of the American Chemical Society, 75(1), 205-209 (1953)
Cross?Coupling Reactions Of Organoboranes: An Easy Way To Construct C-C Bonds (Nobel Lecture)
Suzuki A
Angewandte Chemie (International Edition in English), 50(30), 6722-6737 (2011)
View All Related Papers

Global Trade Item Number

SKUGTIN
452920-100ML04061832326016
452920-500ML04061832326122
452920-2L04061832326115
452920-PZ04061824578126