Bicyclo[4,1,0]heptane-2,4-dion derivatives, its synthetic intermediates and process for the manufacture thereof

摘要

PCT No. PCT/JP92/00084 Sec. 371 Date May 25, 1994 Sec. 102(e) Date May 25, 1994 PCT Filed Jan. 29, 1992 PCT Pub. No. WO92/13821 PCT Pub. Date Aug. 20, 1992.Compounds represented by general formulas (I) and (II), useful as the intermediates for agricultural chemicals, particularly herbicidal compounds, wherein R1 and R2 represent each hydrogen, alkyl or COOR3:R3 represents alkyl: and R4 represents alkyl.