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有限制条件的同分异构体书写题型可以追溯至1999年广东卷。解决此类问题关键要掌握同分异构体中的限制条件与官能团之间的关系,由限制条件写出对应的官能团或碎片,再将基团进行组装。
A limited number of isomeric writing questions can be traced back to the 1999 Guangdong volume. The key to solving these problems is to master the relationship between the isomers and the functional groups, write the corresponding functional groups or fragments under the restriction conditions, and then assemble the groups.