公开(公告)号：US3746726A

公开(公告)日：1973-07-17

申请号：US3746726D

申请日：1969-02-28

Applicant: BASF AG

Inventor： BURGER H ,  DURY J ,  KRUSCHE G ,  REICHENEDER F ,  DURY K

IPC: C07C29/62 ,  C07D307/20 ,  C07D307/60 ,  C07D5/04 ,  C07C31/20

CPC classification number: C07D307/60 ,  C07C29/62 ,  C07D307/20 ,  C07C31/42 ,  C07C33/423

Abstract: A PROCESS FOR BROMINATING BUTYNE -(2)-DIOL-(1,4) IN WHICH SAID COMPOUND IS REACTED WITH ELEMENTARY BROMINE IN AN AQUEOUS-MINERAL ACID MEDIUM AT A TEMPERATURE OF -40* C. TO 150* C. THE REACTION CAN TAKE PLACE EITHER IN THE PRESENCE OF CATALYSTS OR IN THE ABSENCE OF CATALYSTS. THE MOLAR RATIO OF BROMINE TO BUTYNE-(2)DIOL-(1,4) USED IN THE REACTION CAN RANGE FROM 1:1 TO 20:1. THE PROCESS IS USED TO PRODUCE 23-DIBROMOBUTENE(2) - DIOL - (1,4), 2,2,3,3 - TETRABROMOBUTANEDIOL-(1,4), MUCOBROMIC ACID OR 2 - HYDROXY -3,3,4,4 - TETRABROMOTETRAHYDROFURAN. THE INVENTION ALSO IS DIRECTED TO THE NOVEL COMPOUND 2 - HYDROXY-3,3,4,4-TETRABROMOTETRAHYDROFURAN.