PROCESS FOR PREPARING PHENYLGUANIDINE DERIVATIVES AND SULFONIC ACID DERIVATIVES AS INTERMEDIATES IN SYNTHESIS OF PHENYLGUANIDINE DERIVATIVES

摘要

FIELD: organic chemistry. SUBSTANCE: the product: phenylguanidine derivatives of the formula 1: (3-NO₂), (50-A-C₃H₇)-C₆H₃-N=C(NH-CH₂-CH₂SO₃M)-NH-COOR wherein R is alkyl, M-H Na, K, Ca; A is S, SO, SO₂. Reagent 1: thiocarbamide of the formula II: . Reagent 2: an oxidizing agent. A new product of the formula: R-O-C(O)-NH-C(SO₃H)=N-CH₂-CH₂-SO₃M is treated with a corresponding nitroaniline derivative. EFFECT: greater efficiency of the process.