R. H. Khan and T. S. R. Prasada Rao
A new method for the direct conversion of carboxylic acids into aldehydes using (chlorosulfinyloxy)N,N-dimethylmethaniminium chloride and lithium triethylhydroborate (super-hydride) was established which provides a convenient way for the chemoselective reduction of carboxylic acids even with such functional groups as halide, ester, nitrile, olefin and ketone.