摘要：

The action of N-bromosuccinimide (NBS) and water on (Z,Z)-1,5-cyclononadiene (1) results in transanular reactions to give 1-bromo-3a ,4,5,6,7,7a -hexahydroindan-4-ol (2 a) and 2,6-dibromo-10-oxabicyclo[5.2.1]decane (3). The formation of2 a is a result of transanular double bond participation.3 is considered to be produced from intermediary (Z)-2-bromo-5-cyclononen-1<img s

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