Abstract
Synthesis and physiological activity of amides and esters with carvonyl derivatives was examined. d- and l- Carvones (1), (2) were converted to primary amines (3) and (4) by oximation (N,N-dimethylhydrazonation, methylation and elimination reaction) or reduction with LiAlH4. These carvones were converted to primary alcohols (5), (6) through their reduction with LiAlH4. The primary amine (3), (4) and alcohol derivatives (5), (6) were made into amides (3a)∼(4c) and (5d)∼(6f) and esters (5a)∼(6c). Eighteen derivatives were obtained and examined for capacity to regulate growth. Six derivatives were found effective as weed control agents (20 g/a) and quite strong by inhibited the growth of Monochoria vaginalis and Echinochloa crus-galli.
