abstract |
2-HYDROXY- OR MERCAPTO-4-ARYL-QUINAZOLINES, OR THE ESTERS OR ETHERS THEREOF, CAN BE PARTIALLY REDUCED WITH ALKALI OR ALKALINE EARTH METAL BOROHYDRIDES, TO FORM THE CORRESPONDING 3,4-DIHYDRO DERIVATIVES, WHICH ARE VALUABLE INTERMEDIATES IN THE PREPARATION OF PHARMACOLOGICALLY ACTIVE 2-AMINO DERIVATIVES THEREOF. |