Derivatives of salicylic aldehyde and salicylic acid, sulfphuranalogs thereof, process and intermediates for their preparation
摘要
<p>Sulfones of the formula III <IMAGE> III where R2 and R13 are as defined in the specification. The sulfones are used as intermediates in preparing salicylaldehydes and salicylic acid derivatives and sulfur analogs thereof.</p>
