Application of directed metalation in synthesis. Part 4: Expedient synthesis of substituted benzo [b] thiophene and naphthothiophene

~67%

~89%

~%

~82%

~%

~%

~93%

~75%

~%

~79%

~82%

~75%

~67%

~73%

~%

~%

~73%

~83%