Water → [3-(3-Chlorophenyl)-2,1-benzisoxazol-5-yl](4-iodophenyl)-methanone

HRID 346973Notes

Reaction equation

[Li]CCCC.Br[C:7]1[CH:8]=[CH:9][C:10]2[C:11]([CH:22]=1)=[C:12]([C:15]1[CH:20]=[CH:19][CH:18]=[C:17]([Cl:21])[CH:16]=1)[O:13][N:14]=2.[I:23][C:24]1[CH:35]=[CH:34][C:27]([C:28](N(OC)C)=[O:29])=[CH:26][CH:25]=1.O>C1COCC1>[Cl:21][C:17]1[CH:16]=[C:15]([C:12]2[O:13][N:14]=[C:10]3[CH:9]=[CH:8][C:7]([C:28]([C:27]4[CH:34]=[CH:35][C:24]([I:23])=[CH:25][CH:26]=4)=[O:29])=[CH:22][C:11]=23)[CH:20]=[CH:19][CH:18]=1

Participants

Conditions

Temperature: -70 °C

Procedure

BuLi 1.6M (0.106 mol) was added dropwise at −70° C. to a solution of 5-bromo-3-(3-chlorophenyl)-2,1-benzisoxazole (0.0816 mol), obtained in Example A1a, in THF (250 ml) under N2 flow. The mixture was stirred at −70° C. for 15 min. A solution of 4-iodo-N-methoxy-N-methyl-benzamide (0.098 mol) in THF (150 ml) was added dropwise at −70° C. The mixture was stirred at −70° C. for 1 hour then brought to room temperature. The mixture was hydrolysed with water, extracted with EtOAc. The organic layer was separated, dried (MgSO4), filtered, and the solvent was evaporated. The residue (48 g) was crystallized from diethyl ether. The precipitate was filtered off and dried, yielding 16.5 g (44%) of [3-(3-chlorophenyl)-2,1-benzisoxazol-5-yl](4-iodophenyl)-methanone, mp.196° C. (intermediate 35).

Workup

stirringThe mixture was stirred at −70° C. for 1 hour
customthen brought to room temperature
extractionextracted with EtOAc
customThe organic layer was separated
dry with materialdried (MgSO4)
filtrationfiltered
customthe solvent was evaporated
customThe residue (48 g) was crystallized from diethyl ether
filtrationThe precipitate was filtered off
customdried

Sources & evidence

ORD record: ord-7d80e18f5eef4bf4b208f9fb9065299c
Source dataset: uspto-grants-2007_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07173040B2

Reaction notes

Loading…