公开(公告)号：US3819680A

公开(公告)日：1974-06-25

申请号：US4153470

申请日：1970-05-28

申请人： GAF CORP

发明人： WELCH E ,  YAMASHITA K ,  GRAHAM D

IPC分类号： C07C205/57 ,  C07C205/58 ,  C07C101/54 ,  C07C101/58

CPC分类号： C07C205/57 ,  C07C201/08 ,  C07C201/16 ,  C07C205/58 ,  C07C227/04 ,  C07C229/60

摘要： MONONITRO DERIVATIVES OF BENZOIC ACID, AND MONO- AND DICHLORO-BENZOIC ACID, ARE PRODUCED ECONOMICALLY AND IN GOOD YIELD BY NITRATION OF BENZOIC ACID OR CHLORO- OR DICHLORO-BENZOIC ACID ESTERS, PREFERABLY A LOWER ALKYL ESTER, WITH A MIXTURE OF NITRIC ACID AND SULFURIC ACID, OR OLEUM CONTAINING UP TO THE THEORETICAL OF SULFUR TRIOXIDE REQUIRED TO COMBINE WITH THE WATER FORMED IN NITRATION, AT A TEMPERATURE OF ABOUT 10* C, TO ABOUT 80* C. THE THUS PRODUCED MONONITRO ESTERS MAY BE HYDROLYZED TO THE CORRESPONDING MONONITRO-ACID.