The key step of the synthesis of chroman derivatives is to construct chiral chroman ring.
合成色满衍生物的关键是构建含有手性中心的色满环。
The key step of the synthesis of chroman derivatives is to construct chiral chroman ring.
合成色满衍生物的关键是构建含有手性中心的色满环。
These on reduction with NaBH4 gave exclusively cis-3-heterocycle substituted chroman-4-ols in good yields.
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摘】3,3-Dibromochroman-4-ones on reaction with different heterocyclic secondary amines gave 3-substituted chromones.
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