“Cope rearrangement”的概念、定义、翻译、参考文献-科学参考

单词	Cope rearrangement
释义	Cope rearrangement Chemistry A type of rearrangement of dienes in which the position of a substituent changes. For instance, the substituted diene ${CH}_{2} = CH - CH (R) - {CH}_{2} - CH = {CH}_{2},$ when heated, can convert to $RCH = CH - {CH}_{2} - {CH}_{2} - CH = {CH}_{2} .$ It involves the formation of a cyclic transition state, and is an example of a sigmatropic reaction. The Cope rearrangement was discovered by Arthur Cope (1909–66) in 1940.
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