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250726-93-3

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  • 5-(4,4,5,5-TETRAMETHYL-[1,3,2]DIOXABOROLAN-2-YL)-2,3-DIHYDROTHIENO[3,4-B][1,4]DIOXINE

    Cas No: 250726-93-3

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250726-93-3 Usage

General Description

5-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-2,3-dihydrothieno[3,4-b][1,4]dioxine is a chemical compound, the structures of which include a boron atom in its dioxaborolane ring, making it part of the organoboron chemical family. A notable feature is its tetramethyl groups, indicating that its parent butane group is fully saturated with hydrogen and carries four methyl (CH3) groups. 5-(4,4,5,5-TETRAMETHYL-[1,3,2]DIOXABOROLAN-2-YL)-2,3-DIHYDROTHIENO[3,4-B][1,4]DIOXINE also has a thiophene ring joined with a dioxin ring, creating a fused ring system that is a key structural component of the molecule. However, specific properties and uses of this particular compound are not widely documented in the scientific literature. Nevertheless, as an organoboron compound, it might have potential for use in organic synthesis and potentially in pharmaceutical applications, since other similar compounds are known to possess these capabilities.

Check Digit Verification of cas no

The CAS Registry Mumber 250726-93-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,0,7,2 and 6 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 250726-93:
(8*2)+(7*5)+(6*0)+(5*7)+(4*2)+(3*6)+(2*9)+(1*3)=133
133 % 10 = 3
So 250726-93-3 is a valid CAS Registry Number.
InChI:InChI=1/C12H17BO4S/c1-11(2)12(3,4)17-13(16-11)10-9-8(7-18-10)14-5-6-15-9/h7H,5-6H2,1-4H3

250726-93-3SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 13, 2017

Revision Date: Aug 13, 2017

1.Identification

1.1 GHS Product identifier

Product name 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydrothieno[3,4-b][1,4]dioxine

1.2 Other means of identification

Product number -
Other names 2-(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

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More Details:250726-93-3 SDS

250726-93-3Relevant articles and documents

Zinc catalysed electrophilic C-H borylation of heteroarenes

Grundy, Matthew E.,Ingleson, Michael J.,Nichol, Gary S.,Yuan, Kang

, p. 8190 - 8198 (2021)

Cationic zinc Lewis acids catalyse the C-H borylation of heteroarenes using pinacol borane (HBPin) or catechol borane (HBCat). An electrophile derived from [IDippZnEt][B(C6F5)4] (IDipp = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) combined withN,N-dimethyl-p-toluidine (DMT) proved the most active in terms of C-H borylation scope and yield. Using this combination weakly activated heteroarenes, such as thiophene, were amenable to catalytic C-H borylation using HBCat. Competition reactions show these IDipp-zinc cations are highly oxophilic but less hydridophilic (relative to B(C6F5)3), and that borylation proceedsviaactivation of the hydroborane (and not the heteroarene) by a zinc electrophile. Based on DFT calculations this activation is proposed to proceed by coordination of a hydroborane oxygen to the zinc centre to generate a boron electrophile that effects C-H borylation. Thus, Lewis acid binding to oxygen sites of hydroboranes represents an under-developed route to access reactive borenium-type electrophiles for C-H borylation.

Manganese-Catalyzed C(sp2)-H Borylation of Furan and Thiophene Derivatives

Britton, Luke,Skrodzki, Maciej,Nichol, Gary S.,Dominey, Andrew P.,Pawlu?, Piotr,Docherty, Jamie H.,Thomas, Stephen P.

, p. 6857 - 6864 (2021/06/28)

Aryl boronic esters are bench-stable, platform building-blocks that can be accessed through metal-catalyzed aryl C(sp2)-H borylation reactions. C(sp2)-H bond functionalization reactions using rare- and precious-metal catalysts are well established, and while examples utilizing Earth-abundant alternatives have emerged, manganese catalysis remains lacking. The manganese-catalyzed C-H borylation of furan and thiophene derivatives is reported alongside an in situ activation method providing facile access to the active manganese hydride species. Mechanistic investigations showed that blue light irradiation directly affected catalysis by action at the metal center, that C(sp2)-H bond borylation occurs through a C-H metallation pathway, and that the reversible coordination of pinacolborane to the catalyst gave a manganese borohydride complex, which was as an off-cycle resting state.

Alkylammoniotrifluoroborate functionalized polystyrenes: Polymeric pre-catalysts for the metal-free borylation of heteroarenes

Bouchard, Nicolas,Fontaine, Frédéric-Georges

supporting information, p. 4846 - 4856 (2019/04/17)

Three polymeric versions of ansa-N,N-dialkylammoniumtrifluoroborate ambiphilic molecules based on the styrene motif (poly(1-NMe2H+-2-BF3--4-styrene) (P-Me), poly(1-NEt2H+-2-BF3--4-styrene) (P-Et) and poly(1-piperidinyl-H+-2-BF3--4-styrene) (P-Pip)) were synthesized, characterized and tested as heterogeneous pre-catalysts for the borylation of electron-rich heteroarenes. These heterogeneous versions of previously reported pre-catalysts show similar reactivity patterns and represent the first examples of solid-supported FLP metal-free catalysts for the C-H borylation of heteroarenes.

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