Dimethyl Sulfate → 6-methylthiobenz(CD)indol-2-thiol

Participants

Reaction Steps

Chlorosulfonation of benz(cd)indol-2-(1H-one yields the 6-sulfonylchloride derivative, which upon treatment with zinc dust in acetic acid-hydrochloric acid solution, yields 6-mercaptobenz(cd)indol-2-(1H)-one. Treatment with dimethyl sulfate in alkaline solution leads to 6-methylthiobenz(cd)indol-2-(1H)-one, which on heating with P2S5 in pyridine yields 6-methylthiobenz(CD)indol-2-thiol. The reaction of the latter compound with molar equivalents of 3-(4-pyridinyl)propanamine and mercuric acetate in ethanol, under the conditions of Example 55, leads to the title compound.

Provenance & Evidence