365458-36-2

Basic information

• Product Name: 1,3,2-Benzodioxaborole, 4,5,6,7-tetrafluoro-2-(pentafluorophenyl)-
• Synonyms: 1,3,2-Benzodioxaborole, 4,5,6,7-tetrafluoro-2-(pentafluorophenyl)-;1,3,2-Benzodioxaborole, 4,5,6,7-tetrafluoro-2-(2,3,4,5,6-pentafluorophenyl)-;4,5,6,7-Tetrafluoro-2-(2,3,4,5,6-pentafluorophenyl)-1,3,2-benzodioxaborole
• CAS NO: 365458-36-2
• Molecular Formula: C₁₂BF₉O₂
• Molecular Weight: 358
• Mol File: 365458-36-2.mol
• Article Data: 3

Chemical Properties

• Melting Point: 131-132℃
• Boiling Point: 274℃
• Flash Point: 119℃
• Appearance: /
• Density: 1.72
• CAS DataBase Reference: 1,3,2-Benzodioxaborole, 4,5,6,7-tetrafluoro-2-(pentafluorophenyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3,2-Benzodioxaborole, 4,5,6,7-tetrafluoro-2-(pentafluorophenyl)-(365458-36-2)
• EPA Substance Registry System: 1,3,2-Benzodioxaborole, 4,5,6,7-tetrafluoro-2-(pentafluorophenyl)-(365458-36-2)

Safety Data

• Hazardous Substances Data: 365458-36-2(Hazardous Substances Data)

Usage

General Description

1,3,2-Benzodioxaborole, 4,5,6,7-tetrafluoro-2-(pentafluorophenyl)- is a chemical compound known for its complex boron-containing molecular structure and multiple fluorine substitutions. It is an organofluorine compound characterized by benzodioxaborole and pentafluorophenyl groups, indicating its potential as a bioactive or reactive compound in chemical and pharmaceutical applications. 1,3,2-Benzodioxaborole, 4,5,6,7-tetrafluoro-2-(pentafluorophenyl)-'s exact properties, applications, and safety measures are scientifically specific and would require further specialized research for a complete understanding.

Synthetic route

3,4,5,6-tetrafluorobenzene-1,2-diol (1996-23-2) + pentafluorophenylboronic acid (1582-24-7) → 2-(pentafluorophenyl)-tetrafluoro-1,3,2-benzodioxaborole (365458-36-2)

Conditions	Yield
In toluene byproducts: water; mixt. heated to reflux; water removed by azeotropic distillation; after 4 h solvent evapd. under reduced pressure; residue sublimed at 110°C/0.1 mm Hg;	87%
In toluene under N2; C6F4(OH)2 and C6F5B(OH)2 in toluene heated to reflux for 12 h using Dean-Stark apparatus; volatiles removed under reduced pressure; sublimed at 80°C; takenup in pentane; filtered; cryst. at -35°C; elem. anal.;	42%
In toluene byproducts: H2O; (Ar or under vac.); mixed in toluene; heated to reflux; water removed byazeotropic distillation; after 4 h, solvent evapd. under reduced pressu re; sublimed at 110°C;

Upstream product

• 1996-23-2 3,4,5,6-tetrafluorobenzene-1,2-diol 
• 1582-24-7 pentafluorophenylboronic acid 

Relevant articles and documents

Probing substituent effects on the activation of H2 by phosphorus and boron frustrated Lewis pairs

The impact of substituent changes on phosphorus and boron-containing frustrated Lewis pairs (FLPs) has been examined. The phosphites (RO) 3P R = Me, Ph form classical Lewis acid-base adducts of the formula (RO)3PB(C6F5)3 R = Me 1; R = Ph 2, whereas P(O-2,4-tBu2C6H3) 3 and P(O-2,6-Me2C6H3)3 generate FLPs. Nonetheless, these latter combinations do not react with H 2. The more basic phosphinite tBu2POR, R = tBu 3 reacts with B(C6F5)3 to give (tBu2(H)PO) B(C6F5)36. The related species tBu 2POR, R = Ph 4; 2,6-Me2C6H35 showed no reaction with B(C6F5)3 but the FLPs react under H2 (4 atm) to give [tBu2P(OR)H][HB(C 6F5)3] R = Ph 7 and 2,6-Me2C 6H38. Similarly, tBu2PCl in combination with B(C6F5)3, generates an FLP that upon addition of H2, gives [tBu2PH2][ClB(C6F 5)3] 9 albeit in low yield. The diborane 1,4-(C 6F5)2B(C6F4)B(C 6F5)2 in combination with either tBu 3P or (C6H2Me3)3P generates FLPs that react with H2 to give [R3PH] 2[1,4-(C6F5)2HB(C6F 4)BH(C6F5)2] (R = tBu 11, C 6H2Me312). Similarly PhB(C6F 5)2 and tBu3P react with H2 giving [tBu3PH][HBPh(C6F5)2] 13. The combination of B(OC6F5)3 and PtBu3 also generate an FLP which reacts with H2 to give [HPtBu 3][B(OC6F5)4] 14, the product of substituent redistribution. The boronic esters, (C6H 4O2)BC6F515, (C6H 3FO2)BC6F516 and (C 6F4O2)BC6F517, and the borate esters B(OC6H3(CF3)2) 318, B(OC6H2F3)319 and B(OC6H4CF3)320 were prepared and shown to generate FLPs with tBu3P or (C6H 2Me3)3P. Nonetheless, no reaction with H 2 was observed for 15-17. Collectively these data suggest that there is a threshold of combined Lewis acidity and basicity that is required to effect the splitting of H2.

Synthesis and study of new cyclic boronate additives for lithium battery electrolytes

Two novel boronate compounds, 2-(pentafluorophenyl)-tetrafluoro-1,3,2-benzodioxaborole (1) and 2-(pentafluorophenyl)-4,4,5,5-tetrakis(trifluoromethyl)-1,3,2-dioxaborolane (2), have been synthesized as additives for lithium battery electrolytes. These cyclic boronate compounds have a much more significant effect on conductivity enhancement of LiF salt in dimethoxyethene (DME) or ethyl carbonate-dimethyl carbonate (EC-DMC) than either borane or borate additives we previously synthesized. The conductivity of a composite electrolyte containing compound 1 and LiF has reached 9.54 × 10-3 S/cm in DME and 4.79 × 10-3 S/cm in EC-DMC (1:2). This is due to the lower molecular weight and less steric hindrance effects of compound 1. In the case of compound 2, the enhanced performance also comes from the improved solubility in polar solvents. Composite electrolytes containing LiF and either compound 1 or compound 2 have excellent electrochemical stability in the EC-DMC solvent, with respective electrochemical windows of 4.05 and 5.1 V. The composite electrolyte containing LiF and compound 2 shows high cycling efficiency and cyclability in both Li/LiMn2O4 and Li/LiNi0.8Co0.2O2 cells.