2-Ethynyl-4,4,5,5-tetramethyl-[1,3,2]dioxaborlane

2-Ethynyl-4,4,5,5-tetramethyl-[1,3,2]dioxaborlane - Names and Identifiers

Name	1,3,2-Dioxaborolane, 2-ethynyl-4,4,5,5-tetramethyl-
Synonyms	Ethynylboronic Acid Pinacol Ester Ethynylboronic acid pinacol ester 2-Ethynyl-4,4,5,5-tetramethyl-[1,3,2]dioxaborlane 2-Ethynyl-4,4,5,5-tertamethyl-1,3,2-dioxaborolane 2-Ethynyl-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane 1,3,2-Dioxaborolane, 2-ethynyl-4,4,5,5-tetramethyl- 2-Ethynyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane AldrichCPR
CAS	347389-74-6

2-Ethynyl-4,4,5,5-tetramethyl-[1,3,2]dioxaborlane - Physico-chemical Properties

Molecular Formula	C8H13BO2
Molar Mass	152
Density	0.93
Boling Point	133℃
Flash Point	34℃
Solubility	Acetonitrile (Slightly), Chloroform (Sparingly)
Appearance	Solid
Color	Colourless to Off-White Low-Melting
Storage Condition	under inert gas (nitrogen or Argon) at 2-8°C
Refractive Index	1.4300 to 1.4340

2-Ethynyl-4,4,5,5-tetramethyl-[1,3,2]dioxaborlane - Risk and Safety

UN IDs	UN 3272 3/PG III
WGK Germany	3
Hazard Class	3
Packing Group	III

2-Ethynyl-4,4,5,5-tetramethyl-[1,3,2]dioxaborlane - Introduction

1,3,2-Dioxaborolane, 2-ethynyl-4,4,5,5-tetramethyl-(1,3, 2-dioxaborane, 2-ethynyl-4,4,5,5-tetramethyl-) is an organic compound with the chemical formula C10H16BO2. The following is a description of the properties, uses, preparation and safety information of the compound:

Nature:
-Appearance: 1,3,2-Dioxaborolane, 2-ethynyl-4,4,5,5-tetramethyl-is a colorless liquid.
-Boiling point: Its boiling point is about 120°C.
-Melting point: 1,3,2-Dioxaborolane, 2-ethynyl-4,4,5,5-tetramethyl-is liquid at room temperature and has no obvious melting point.
-Density: Its density is about 0.815 g/mL.
-Solubility: 1,3,2-Dioxaborolane, 2-ethynyl-4,4,5,5-tetramethyl-Soluble in organic solvents.

Use:
- 1,3,2-Dioxaborolane, 2-ethynyl-4,4,5,5-tetramethyl-can be used as an important reagent in organic synthesis, and can be used to synthesize a variety of organic compounds containing boron.
-It can be used as a reagent for phenylacetylene coupling reactions to synthesize compounds containing alkynyl benzene rings.
- 1,3,2-Dioxaborolane, 2-ethynyl-4,4,5,5-tetramethyl-can also be used to synthesize biologically active molecules.

Preparation Method:
- 1,3,2-Dioxaborolane, 2-ethynyl-4,4,5,5-tetramethyl-can be synthesized by a combination of ethynylation and boronation reactions. During the synthesis, ethynyl bromide (or ethynyl chloride) is reacted with boron dioxide and a basic reagent to give the desired product.

Safety Information:
- 1,3,2-Dioxaborolane, 2-ethynyl-4,4,5,5-tetramethyl-has high safety, but as an organic compound, it is still necessary to pay attention to safe operation and storage.
-In case of contact, flush the skin or eyes with plenty of water in time.
-For further use and handling, please refer to the relevant safety data sheet and application guide, and follow the correct laboratory operating procedures.

Last Update：2024-04-10 22:29:15