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房天下
27d
鱼鏻锦苑
遇到二手房迟迟不能过户,判断是否遭遇虚假交易时,首先应核查买卖合同的真实性与合法性,确认交易双方身份及房屋权属无误。其次,留意交易过程中是否存在异常,如卖方频繁变更理由 ...
10d
以中国人命名的有机化学反应
Stork-赵康烯化反应是一个以著名化学家Gilbert Stork和我国科学家赵康命名的反应。这个反应是对 wittig反应的拓展,此反应利用 (碘甲基)三苯基碘化鏻和NaHMDS反应得到磷叶立德,接着和醛反应得到 (Z)-乙烯基碘,其可以作为交叉偶联反应的的重要前体,这使得这个反应在合成 (Z)-烯烃时非常有价值。【 Tetrahedron Letters, 1989, 30, ...
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