| abstract |
Abstract of the disclosure: Cyanohydrine derivatives of the formula wherein R1 and R2 are alkyl, haloalkyl, cycloalkyl, ar-alkyl or aryl, R3 and R4 are hydrogen, alkyl, phenyl or benzyl, R5 is hydrogen, acyl. trialkylsilyl or alkoxy-carbonyl, X is oxygen or sulfur and n is zero or 1, are intermediates for the manufacture of flame retar-dants, bactericides, fungicides and herbicides. |