2-(Trimethylsilyl)ethoxymethyl chloride (SEM-Cl) is an organochlorine compound with the formula C 6 H 15 ClOSi, which was developed by Bruce H. Lipshutz during his work on the synthesis of N-methylmaysenine. It is used to protect hydroxyl groups, which can be cleaved with fluoride in organic solvents selectively under mild conditions. [1]

2-(Trimethylsilyl)ethoxymethyl chloride (SEM-Cl) is a widely used reagent for the preparation protection groups for amines, alcohols, phenols, and carboxy groups. The nitrogen of amides and sulfonamides groups are also protected by using SEM-Cl reagent.

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SEM-Cl 询问 氯甲基三甲基硅乙基醚(2-chloromethyl 2-(trimethylsilyl)ethyl ether) CAS: 76513-69-4 化学式: C6H15ClOSi

扫描电镜阴极荧光（sem-cl）是在扫描电子显微镜中产生的高能电子轰击下，材料发出的特征波长光子。 材料中阴极荧光本质是成分、晶格结构和材料结构上叠加应变或损伤的复杂函数。

阴极荧光谱是利用电子束激发半导体样品，将价带电子激发到导带，之后由于导带能量高不稳定，被激发电子又重新跳回价带，并释放出能量E≤Eg（能隙）的特征荧光谱。 阴极荧光谱取决于发光物质 (包括主体物质和杂质)的价电子能级分布。 因此，它可用来测定一些矿物的阴极荧光特点，是一种矿物鉴定方法。 块体表面平整。 样品尺寸：薄片小于5*5cm，原岩小于2*2cm，高度小于1cm。 粉末需要镶嵌制样。 0.

SEM-CathodoLuminescence (SEM-CL) is the emission of photons of characteristic wavelengths from a material that is under high-energy electron bombardment produced in a scanning electron microscope. The nature of CL in a material is a complex function of composition, lattice structure and superimposed strain or damage on the structure of the ...

2024年1月2日 · 俗名： SEM-Chloride (stabilized with Diisopropylethylamine) , 2-(Trimethylsilyl)ethoxymethyl Chloride (stabilized with Diisopropylethylamine) 分子式： C6H15ClOSi

2-（三甲硅烷基）乙氧甲基氯（sem-cl）是广泛使用的一种试剂，用于制备胺、醇、酚和羧基的保护基团。酰胺和磺酰胺基团中的氮也可用sem-cl试剂进行保护。

2-(Trimethylsilyl)ethoxymethyl chloride is widely used in the protection of alcohols because the SEM ethers are easily prepared. They are stable to a number of synthetic transformations, and they are easily removed.