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CAS RN: 546-67-8 | 제품번호: L0021

Lead Tetraacetate (contains Acetic Acid)


순도/분석 방법: >96.0%(T)
동의어의:
  • LTA (contains Acetic Acid)
문서:
25G
₩ 83,200
문의 ≥20 
500G
₩ 636,800
2   문의
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제품번호 L0021
Purity/Analysis Method >96.0%(T)
M.F. / M.W. C__8H__1__2O__8Pb = 443.38  
물리적 상태 (20 ℃) Solid
보관 조건 0-10°C
불활성 가스 하에서 보관 Store under inert gas
피해야 할 조건 Air Sensitive,Moisture Sensitive,Heat Sensitive
CAS RN 546-67-8
Reaxys-RN 3595640
PubChem Substance ID 87571991
Merck Index (14) 5423
MDL 번호

MFCD00008693

규격표
Appearance White to Almost white powder to crystal
Purity(Iodometric Titration) min. 96.0 %
물성치(참고치)
mp 180 °C
용해성 (용해) Alcohol,Nitrobenzene,Chloroform,Benzene
GHS
픽토그램 Pictogram Pictogram Pictogram
신호 워드 Danger
위험물 및 유해 등록 H302 + H332 : Harmful if swallowed or if inhaled.
H315 : Causes skin irritation.
H361 : Suspected of damaging fertility or the unborn child.
H373 : May cause damage to organs through prolonged or repeated exposure.
H341 : Suspected of causing genetic defects.
H350 : May cause cancer.
H272 : May intensify fire
주의 사항 P501 : Dispose of contents/ container to an approved waste disposal plant.
P260 : Do not breathe dust/ fume/ gas/ mist/ vapors/ spray.
P270 : Do not eat, drink or smoke when using this product.
P202 : Do not handle until all safety precautions have been read and understood.
P220 : Keep/Store away from clothing/ combustible materials.
P210 : Keep away from heat.
P201 : Obtain special instructions before use.
P221 : Take any precaution to avoid mixing with combustibles.
P271 : Use only outdoors or in a well-ventilated area.
P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection.
P302 + P352 : IF ON SKIN: Wash with plenty of water.
P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish.
P308 + P313 : IF exposed or concerned: Get medical advice/ attention.
P362 + P364 : Take off contaminated clothing and wash it before reuse.
P332 + P313 : If skin irritation occurs: Get medical advice/ attention.
P301 + P312 + P330 : IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. Rinse mouth.
P304 + P340 + P312 : IF INHALED: Remove person to fresh air and keep comfortable for breathing. Call a POISON CENTER/doctor if you feel unwell.
P405 : Store locked up.
법규 정보
RTECS # AI5300000
운송 정보
UN 번호 UN3087
등급 5.1 / 6.1
포장 그룹 III
HS 번호* 2915.29-000
*이 HS 번호 는 TCI(일본)에서 제품을 수출할 때만 사용됩니다
Application
Generation of Benzyne using Pb(OAc)4 and Synthesis of Dibenzocyclobutadiene

L0021

References


Application
Oxidation of 1,2-Diols (Criegee Oxidation)1)

Typical Procedure:
To a solution of olefine 1 (11.9 mg, 0.030 mmol) and DMAP (7.33 mg, 0.060 mmol, 2 eq.) in t-BuOH (100 µL) is added a solution of OsO4 (7.62 mg, 0.030 mmol, 1 eq.) in water (200 µL). The orange-red solution is stirred at rt for 5-10 min. Solid Na2SO3 (19 mg, 0.15 mmol, 5 eq.) is added. The resulting mixture is applied directly to preparative TLC (CHCl3 : MeOH : NH4OH = 25 : 10 : 1) and diol is collected by washing silica gel with a mixture of CHCl3 : MeOH = 2 : 1. Concentration under reduced pressure (< 25 ℃) affords the slightly unstable diol 2, which is dissolved in CH2Cl2 (2 mL). The solution then is cooled to -20 ℃ and AcOH (9.0 mg, 8.6 µL, 5 eq.) is added, followed by solid Pb(OAc)4 (11 mg, 0.025 mmol) in portions. TLC (CH2Cl2 : MeOH = 1 : 1 and 25 : 1) monitors the end of the reaction. The resulting yellow solution is stirred at -20 ℃ for 5-10 min, washed with water, saturated NaHCO3 and brine, dried over Na2SO4 and evaporated under reduced pressure to give 3 (8.5 mg, Y. 71%) of silica gel labile ketone as a yellow powder.

References


PubMed Literature


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