中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
硫代苯并二氢吡喃-3-酮 | thiochroman-3-one | 16895-58-2 | C9H8OS | 164.228 |
The use of 2,3-dihydrobenzo[b]thiophene-2,3-dione as a source of 2-mercaptophenylacetic acid permits a convenient preparation of 2-carboxymethylthiophenylacetic acid or derivatives. These undergo a Dieckmann cyclization to 3-acetoxybenzothiopyrans, which may be hydrolysed to thiochroman-3-ones. The further reactions of some of these are described.