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单词 lossen rearrangement
释义 los·sen rearrangement
\ˈläsən-\ noun
Usage: usually capitalized L
Etymology: probably after Wilhelm Lossen died 1906 German chemist
: the conversion of a hydroxamic acid RCONHOH to an amine RNH2, a urea (RNH)2CO, a urethane RNHCOOC2H5, or a similar derivative by way of an intermediate isocyanate RNCO
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