Synthesis of ethyl iso nicotinate using BTEAC (benzyl triethyl ammonium chloride) as phase transfer catalyst was studied.
以BTEAC(苄铵)为相转移催剂合成了烟酸酯。
Methyl 1 phenyl Propanone was synthesized with benzene and iso butyryl chloride by using anhydrous aluminium trichloride as catalyst.
由苯与丁酰在无水铝作催剂的条件下制备苯丙酮。
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ISO standards are not free, and they're not even cheap.
ISO 标免费的, 而且价格也宜。
And once again, I go online, and I teach myself about ISO and aperture on YouTube.
次上网,在 YouTube 上自学 ISO 和光圈。
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