2,2,2-Trichloro-n-methylacetamide → (+)-4-(5-Chloro-2-methoxybenzamidomethyl)-6-(methylaminocarbonylaminosulfonyl)-7-methoxychroman
Reaction equation
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:28][CH3:29])=[C:6]([CH:27]=1)[C:7]([NH:9][CH2:10][CH:11]1[C:20]2[C:15](=[CH:16][C:17]([O:25][CH3:26])=[C:18]([S:21](=[O:24])(=[O:23])[NH2:22])[CH:19]=2)[O:14][CH2:13][CH2:12]1)=[O:8].[CH3:30][NH:31][C:32](=[O:37])C(Cl)(Cl)Cl>CN(C=O)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:28][CH3:29])=[C:6]([CH:27]=1)[C:7]([NH:9][CH2:10][CH:11]1[C:20]2[C:15](=[CH:16][C:17]([O:25][CH3:26])=[C:18]([S:21]([NH:22][C:32]([NH:31][CH3:30])=[O:37])(=[O:23])=[O:24])[CH:19]=2)[O:14][CH2:13][CH2:12]1)=[O:8]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
(+)-4-(5-Chloro-2-methoxybenzamidomethyl)-6-(methylaminocarbonylaminosulfonyl)-7-methoxychroman ##STR58## (+)-4-(5-Chloro-2-methoxybenzamidomethyl)-6-(methylaminocarbonylaminosulfonyl)-7-methoxychroman is prepared analogously to Example 1 from optically active 4-(5-chloro-2-methoxybenzamidomethyl)-6-sulfamoyl-7-methoxychroman and N-methyltrichloroacetamide. Melting point: 242° C.; [α]D20 : +63.4° (c=1, DMF); HPLC: ee 100%.
Sources & evidence
- ORD record
- ord-37809ec030a04a5789fde6d709826115
- Source dataset
- uspto-grants-1998_09
- Patent number
- US05811448
Reaction notes
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