搜狗做题网英语翻译The traditional literature procedure developed by Richma
来源：学生作业帮 编辑：搜狗做题网作业帮 分类：英语作业 时间：2024/04/26 12:11:12
英语翻译
The traditional literature procedure developed by Richman-Atkins for the synthesis 1 involves the formation of tetra-N-tosylated cyclen from the macrocyclization of tris-N-tosyl diethylenetriamine with N-tosyldiethanolamine ditosylate.A variety of procedures for the detosylation have been reported such as treatment with concentrated H2SO4 and HBr/AcOH.Over the years,modifications of this process have been reported to help increase the efficiency of this technique.However,even with modifications,the use of N-tosylates makes for a very cumbersome process.
Their approach focused on conversion of TETA to a tricyclic bis-amidine (5) that underwent a double reductive ring expansion with DIBALH,yielding 1 in 57%.While this method clearly offers a significant and novel approach to 1,there remain some drawbacks when considering large-scale production.For instance,the procedure required the use of dithiooxamide,which leads to the generation of hydrogen sulfide and a timeconsuming reduction involving DIBALH.Typically,regardless of the synthetic process utilized,final isolation of 1 is achieved via precipitation from basic solution.
The traditional literature procedure developed by Richman-Atkins for the synthesis 1 involves the formation of tetra-N-tosylated cyclen from the macrocyclization of tris-N-tosyl diethylenetriamine with N-tosyldiethanolamine ditosylate.A variety of procedures for the detosylation have been reported such as treatment with concentrated H2SO4 and HBr/AcOH.Over the years,modifications of this process have been reported to help increase the efficiency of this technique.However,even with modifications,the use of N-tosylates makes for a very cumbersome process.
Their approach focused on conversion of TETA to a tricyclic bis-amidine (5) that underwent a double reductive ring expansion with DIBALH,yielding 1 in 57%.While this method clearly offers a significant and novel approach to 1,there remain some drawbacks when considering large-scale production.For instance,the procedure required the use of dithiooxamide,which leads to the generation of hydrogen sulfide and a timeconsuming reduction involving DIBALH.Typically,regardless of the synthetic process utilized,final isolation of 1 is achieved via precipitation from basic solution.
这种专业文章不是会英语就可以的,你想想一下学你这个专业的,英文---而且还是中英互译还是刚刚的,然后还闲得蛋疼跑到百度知道这种懒得不能再烂的平台上来,并且看到你发的这一大堆东西,然后又恰好有耐心和时间帮你翻译.这个几率是不是无限趋于零?
这种东西不花钱还求翻译,么么哒.
这种东西不花钱还求翻译,么么哒.
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