Fungicidal n-(2-acylaminophenyl)-n,n-bis(alkoxycarbonyl)-guanidines - from 2-acrylaminoanilines and s-alkyl n,n-bis(alkoxycarbonyl) isothiazole

摘要

Fungicidal phenylguanidine derivs are prepd by reacting a cpd of formula: (where X is halogen, 1-4C alkyl or alkoxy; n=0, 1 or 2; R is H or 1-4C alkyl; R2 is H, 1-18C alkyl (opt. substd by halogen, CN, 1-4C alkoxy, 2-5C alkoxycarbonyl, phenoxy, halophenoxy, alkylphenoxy, or alkoxyphenoxy), 5-8C cycloalkyl, aralkyl or aryl (both opt substd by halogen, 1-4C alkyl or alkoxy) 1-furyl or NR3R4; R3 is H or 1-4C alkyl; R4 is H, 1-18C alkyl (opt. substd by halogen, CN, alkoxycarbonyl (=5C)), 5-8C cycloalkyl, aralkyl or phenyl (both opt. ring-substd by halogen, lower alkyl and/or lower alkoxy) =18C acyl (opt substd by halogen, lower alkyl, lower alkoxy), =18C alkylsulphonyl, arylsulphonyl, (opt. substd by halogen, amino, lower alkyl or alkoxy) or =4C dialkylamino; or NR3R4 is a 4-7C heterocycle opt. contg. O or S as heteroatoms) with R1OOC-N=C(SR5)-NH-COOR1 (where R1=1-12C alkyl; R5=1-4C alkyl) in a diluent witn the addn of 0.1-20 mole % of an (in)organic acid catalyst.