2-AZABICYCLO[2.2.1]HEPT-5-ENE-2-ACETIC ACID, DERIVATIVES THEREOF AND RELATED COMPOUNDS, PROCESS FOR THE PREPARATION OF SAID COMPOUNDS AND THE USE OF SAID COMPOUNDS FOR THE MANUFACTURE OF N-PHOSPHONOMETHYLGLYCINE

摘要

A compound having the structure <IMG> V wherein R3, R4, R5, R6, R7 and R8 are each independently hydrogen, C1-C4 alkyl, C6H5 or NO2; Y is COOR, CON(R1)2, or CN wherein R and R1 are each independently hydrogen or C1-C4 alkyl with the proviso that when R3, R4, R5, R6, R7 and R8 are hydrogen, R is independently hydrogen or C2-C4 alkyl. These compounds are useful as intermediates in the preparation of N-phosphonomethylglycine, a known herbicide and plant growth regulator.