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The target compound was synthesized from N-benzyl protected aminoacetophenone through hydrogenation,benzoylation and reduction.

以氮-苄基保护胺基为原化,苯甲酰化,还原三步合成双苯甲酰沙丁胺醇

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Xanthone was efficiently synthesized from o-chlorobenzoic acid first by etherization and then by Friedel-Crafts reaction in the presence of aluminium trichloride.

以邻氯苯甲酸为原,先进行醚化,再在三氯化用下进行傅-克反应,可简洁、高效合成呫吨

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N butyl 2 ethoxy thioacridone was prepared from o chloro benzoic acid and p phenetidine by means of Ullman reaction,cyclization,N alkylation and sulfurization.

以邻氯苯甲酸和对乙氧基苯胺为原,过胺苯基化、二芳胺环化、N-烷基化、硫代化反应合成了N-丁基-2-乙氧基硫代吖啶

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crossjack, crossknurl, cross-legged, crosslet, cross-level, cross-license, cross-licensed, crosslight, cross-lights, cross-like,

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3G, 401(K), a,

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科学60秒-科学美国人 2019年3月合集

From Palau: The tiny Pacific archipelago became the first country to prohibit the use of sunscreens containing coral-toxic ingredients, including oxybenzone and octinoxate.

来自帕劳:这个小小的群岛成第一个用含有对珊瑚有毒成分的防晒霜的国家,其中包括羟苯甲和辛氧酸盐。

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crossly, cross-marketing, cross-mate, crossmodulation, cross-modulation, cross-multiply, crossness, cross-network, cross-neutralization, cross-notching,

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3G, 401(K), a,
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