Chemical Name | TRIMETHYLOXONIUM TETRAFLUOROBORATE |
CAS Number | 420-37-1 |
Synonym |
NSC 528455
Oxonium, trimethyl-, tetrafluoroborate(1-)
TRIMETHYLOXONIUM TETRAFLUOROBORATE
Trimethyloxonium Fluoroborate
Trimethyloxonium Tetrafluoroborate
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MDL Number | MFCD00011798 |
EC Number | 206-994-4 |
Beilstein Registry Number | 3597303 |
PubChem Substance ID | 87577267 |
Reaxys-RN | 3597303 |
Chemical Name Translation | 三甲基氧鎓四氟硼酸 |
InChIKey | KAAQTDVQNWMZJT-UHFFFAOYSA-J |
LabNetwork Molecule ID | LN00235677 |
Signal word |
Danger |
GHS Symbol
WGK Germany | 3 |
Safety Statements | |
- S20 When using do not eat or drink 使用时,不得进食,饮水;
- S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 眼睛接触后,立即用大量水冲洗并征求医生意见;
- S36/37/39 Wear suitable protective clothing, gloves and eye/face protection 穿戴适当的防护服、手套和眼睛/面保护;
- S43 In case of fire use ... (indicate in the space the precise type of fire-fighting equipment. If water increases the risk add -?Never use water) 着火时使用(指明具体的消防器材种类,如果用水增加危险,注明“禁止用水”
- S45 In case of accident or if you feel unwell seek medical advice immediately (show the label where possible) 发生事故时或感觉不适时,立即求医(可能时出示标签);
- S60 This material and its container must be disposed of as hazardous waste 该物质及其容器必须作为危险废物处置;
|
Risk Statements | |
- R14 Reacts violently with water 遇水会猛烈反应
- R34 Causes burns 会导致灼伤
- R36/37/38 Irritating to eyes, respiratory system and skin 对眼睛、呼吸系统和皮肤有刺激性
|
Precautionary statements | |
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray. 避免吸入粉尘/烟/气体/烟雾/蒸汽/喷雾。
- P264 Wash hands thoroughly after handling. 处理后要彻底洗净双手。
- P280 Wear protective gloves/protective clothing/eye protection/face protection. 戴防护手套/防护服/眼睛的保护物/面部保护物。
- P301+P330+P331
- P303+P361+P353+P310+P363
- P304+P340
- P304+P340+P310
- P305+P351+P338
- P310 Immediately call a POISON CENTER or doctor/physician. 立即呼救解毒中心或医生/医师。
- P405 Store locked up. 上锁保管。
- P501 Dispose of contents/container to..… 处理内容物/容器.....
|
Hazard statements | |
- H302 Harmful if swallowed 吞食有害
- H314 Causes severe skin burns and eye damage 导致严重的皮肤灼伤和眼睛损伤
|
Personal Protective Equipment |
Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
Packing Group | II |
UN Number |
3261 |
Storage condition |
Moisture Sensitive
储存温度 2-8°C
储存温度?20°C
<;0
<0°C
2-8°C
储存温度 -20°C; 充氩保存 |
Hazard Codes |
8
C |
Hazard Class | 8 |
米尔文盐(Meerwein salt),是一种强的亲电子甲基化试剂,用于氢氧基基团的甲基化。可用于复杂多步骤地合成海洋天然产品spirastrellolide。
{ALD} Beilstein:1(4)1248
{ALF} Trialkyloxonium salts, also known as Meerwein's salts, are powerful alkylating agents under mild conditions. For general reactions of trialkyloxonium salts, see Triethyloxonium tetrafluoroborate, A14420. For a brief feature of their uses in synthesis, see: Synlett, 195 (2004).
{ALF} N,N-Dialkyl arylcarboxamides, useful as substrates for directed metallation reactions, can be converted to methyl esters in high yield: Tetrahedron, 56, 9875 (2000).
{TRC} Curphey, T.J. et al.: Org. Synth. 6, 1019 (1968);
{ALF} Alkylation of ethylene thioacetals proceeds only to the monoalkyl salt unless water is added, when the thioacetal is cleaved to give the carbonyl compound and the tetraalkyl ethane bis-sulfonium salt: Synthesis, 135 (1981). Alkylation on S to promote leaving group ability has also been used in a synthesis of oxiranes from ß-hydroxy sulfides: J. Am. Chem. Soc., 95, 3429 (1973); J. Chem. Soc., Chem. Commun., 714 (1975).