Pyridine → diphenylmethyl (2R)-2-[(1R,5S)-3-phenyl-7-oxo-4-oxa-2,6-diazabicyclo[3,2,0]hept-2-en-6-yl]-3-chloromethyl-3-butenoate

HRID 1680080Notes

Reaction equation

HRID 1680080 reaction equation
[CH3:1][C:2](=[CH2:34])[C@@H:3]([N:20]1[C:26](=[O:27])[C@H:25]2[C@@H:21]1[O:22][C:23]([C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1)=[N:24]2)[C:4]([O:6][CH:7]([C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)[C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)=[O:5].[Cl:35]Cl.N1C=CC=CC=1>C(OCC)(=O)C.C(Cl)(Cl)(Cl)Cl>[C:28]1([C:23]2[O:22][C@H:21]3[C@H:25]([C:26](=[O:27])[N:20]3[C@H:3]([C:2]([CH2:1][Cl:35])=[CH2:34])[C:4]([O:6][CH:7]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=3)[C:8]3[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=3)=[O:5])[N:24]=2)[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1

Participants

6

Reactant 3

HCID 1049PyridineHCID 24526ChlorineHCID 12911969HCID 12911969, compound

Product 1

HCID 56996092diphenylmethyl (2R)-2-[(1R,5S)-3-phenyl-7-oxo-4-oxa-2,6-diazabicyclo[3,2,0]hept-2-en-6-yl]-3-chloromethyl-3-butenoate

Reagents, catalysts & solvents 2

HCID 5943Carbon TetrachlorideSolventHCID 8857Ethyl AcetateSolvent

Procedure

A solution of 100 mg of Compound (1a) in ethyl acetate is reacted with a solution (2.0 molar equivalents) of chlorine in carbon tetrachloride at room temperature. The obtained product is treated with 1.2 equivalents of pyridine for 45 minutes under ice cooling, instead of chromatography of silica gel, to yield 110 mg of Compound (7).

Sources & evidence

ORD record
ord-f565c592d07947e6aaf813be632daffd
Source dataset
uspto-grants-1981_06
Patent number
US04271295

Reaction notes

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