and (6), easily available through earlier work,1 are smoothly converted by SeO2 into the acetamido-benzotropones (7) and (8) respectively, which in turn can be hydrolysed to the corresponding benzotropolones.
恶唑-benzocycloheptenes(5)和(6),容易获得通过早期的工作,1平滑地搜索引擎优化转换2为乙酰
氨基benzotropones(7)和(8分别地),这反过来又可以
水解成相应的benzotropolones。