3,5-Dibromobenzeneboronic acid → (E)-ethyl 3-(3',5'-dibromo-biphenyl-4-yl)-but-2-enoate
Reaction equation
I[C:2]1[CH:7]=[CH:6][C:5](/[C:8](/[CH3:15])=[CH:9]/[C:10]([O:12][CH2:13][CH3:14])=[O:11])=[CH:4][CH:3]=1.[Br:16][C:17]1[CH:18]=[C:19](B(O)O)[CH:20]=[C:21]([Br:23])[CH:22]=1>>[Br:16][C:17]1[CH:18]=[C:19]([C:2]2[CH:7]=[CH:6][C:5](/[C:8](/[CH3:15])=[CH:9]/[C:10]([O:12][CH2:13][CH3:14])=[O:11])=[CH:4][CH:3]=2)[CH:20]=[C:21]([Br:23])[CH:22]=1Participants
3
Procedure
The colourless gum (E)-ethyl 3-(3′,5′-dibromo-biphenyl-4-yl)-but-2-enoate was prepared from (E)-ethyl 3-(4-iodophenyl)-but-2-enoate (example 91a) and 3,5-dibromobenzene boronic acid by a procedure analogous to that described in example 52a.
Sources & evidence
- ORD record
- ord-b904d811733e4aa09876cb801d58658a
- Source dataset
- uspto-grants-2005_03
- Patent number