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[求助] 腙键的合成疑惑

求助一个引入腙键的反应,剧文献报道,FA-BH经过脱Boc后用甲苯除去体系中多余的TFA,然后加入无水DMF和含羰基的反应物Dox(阿霉素),然后滴入TFA,避光搅拌48小时。
想请问一下,这里面的DMF应该是作溶剂,那TFA是作为催化剂吗?我的反应物结构除了羰基还有羧基和氨基,TFA会不会影响我的反应物?前面一步如果TFA没除干净会有什么影响?还想问一下,除去TFA的方法,除了加甲苯带走还能有别的方法吗?谢谢!
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