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Meldrum’s acid

Dangerous Goods

CAS number:2033-24-1    molecular formula:C6H8O4

overview

compound introduction

2,2-二甲基-1,3-二恶烷-4,6-二酮(米氏酸)广泛用于有机合成,特别是对于多种CC键形成,因为它具有足够的酸性 (pKa 4.83) 和空间刚性。在离子液体中,醛和米氏酸之间的克内文纳格尔缩合反应加速发生。 Usually used in the synthesis of macrocyclic β-keto lactone,4-pyridyl-substituted heterocycles,2-substituted indoles, isofraxidin. 2,2-Dimethyl-1,3-dioxane-4,6-dione (Meldrum′s acid) is widely used in organic synthesis, especially for multiple C-C bond formations due to its adequate acidity (pKa 4.83) and steric rigidity. Knoevenagel condensation reaction between aldehydes and Meldrum′s acid are accelerated in ionic liquids. Usually used in the synthesis of macrocyclic β-keto lactone,4-pyridyl-substituted heterocycles,2-substituted indoles, isofraxidin.

Specs

Chinese alias丙二酸亚异丙酯 | 2,2-二甲基-1,3-二噁烷-4,6-二酮 | 丙二酸环亚异丙酯
English alias2,6-dione | AKOS000119035 | m-DIOXANE-4,6-DIONE, 2,2-DIMETHYL- | Meldrum inverted exclamation mark s acid | STK397458 | 2.2-dimethyl-1,3-dioxane-4,6-dione | NSC71902 | NSC-71902 | AM20090153 | 2, 2-dimethyl-1,3-dioxane-4, 6-dione | cycl-Isopropylidene mal
CAS number2033-24-1molecular formulaC6H8O4
molecular weight144.13 g/molExact mass≥98%
PSA52.600 Ųlogp0.6

numbering system

No numbering system information yet

physicochemical properties

No physical and chemical property information yet

Safety information

pictogram:
GHS09 , GHS07
Signal word:
Warning
Hazard Statement:
H315: 引起皮肤刺激 H319: 引起严重眼睛刺激 H335: 可能引起呼吸道刺激 H411: 对水生生物有毒并具有长期持续影响 H400: 对水生生物有剧毒
Statement of Preventive Measures:
P261: 避免吸入灰尘/烟雾/气体/雾/蒸汽/喷雾 P305+P351+P338: 如进入眼睛:用水小心冲洗几分钟。如戴隐形眼镜并可方便地取出,取出隐形眼镜。继续冲洗。 P273: 避免释放到环境中。 P280: 戴防护手套/穿防护服/戴防护眼罩/戴防护面具。 P302+P352: 如皮肤沾染:用水充分清洗。 P321: 特殊处理(请参阅此标签上的...)。 P405: 密闭存放 P501: 将内容物/容器处理到。。。 P264: 处理后要彻底洗手。 P271: 仅在室外或通风良好的地方使用。 P304
WGK Germany:
3
Personal protective equipment:
Eyeshields,Gloves,type N95 (US),type P1 (EN143) respirator filter
RTECS:
JH0800000

Production methods and uses

No production method and use information yet

Related

upstream information

No upstream information yet

downstream information

No downstream information yet

MSDS

Found 1 shareMSDS
2033-24-1 | 2,2-Dimethyl-1,3-dioxane-4,6-dione.pdf