Trimethylsilyldiazomethane → HCID 67999455, compound

HRID 932217Notes

Reaction equation

[Si:1]([O:18][CH2:19][C@@H:20]([N:24]1[C@H:29]([C:30]2[CH:35]=[CH:34][C:33]([Cl:36])=[CH:32][CH:31]=2)[C@@H:28]([C:37]2[CH:42]=[CH:41][CH:40]=[C:39]([Cl:43])[CH:38]=2)[CH2:27][C@@:26]([CH2:45][C:46]([OH:48])=[O:47])([CH3:44])[C:25]1=[O:49])[CH:21]1[CH2:23][CH2:22]1)([C:14]([CH3:17])([CH3:16])[CH3:15])([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:50][Si](C=[N+]=[N-])(C)C>CO.C1C=CC=CC=1>[Si:1]([O:18][CH2:19][C@@H:20]([N:24]1[C@H:29]([C:30]2[CH:31]=[CH:32][C:33]([Cl:36])=[CH:34][CH:35]=2)[C@@H:28]([C:37]2[CH:42]=[CH:41][CH:40]=[C:39]([Cl:43])[CH:38]=2)[CH2:27][C@@:26]([CH2:45][C:46]([O:48][CH3:50])=[O:47])([CH3:44])[C:25]1=[O:49])[CH:21]1[CH2:22][CH2:23]1)([C:14]([CH3:17])([CH3:16])[CH3:15])([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

Conditions

Temperature: 0 °C

Procedure

To a solution of 2-((3R,5R,6S)-1-((S)-2-(tert-butyldiphenylsilyloxy)-1-cyclopropylethyl)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-2-oxopiperidin-3-yl)acetic acid (1400 mg, 1.96 mmol; Example 263, Step A) in a mixture of MeOH (3.1 mL) and benzene (12.5 mL) was added 2.0 M (trimethylsilyl)diazomethane in hexanes (1.96 mL, 3.92 mmol) at 0° C. dropwise. After being stirred at 0° C. for 1 h, the reaction was concentrated under reduced pressure. Purification of the residue by chromatography on silica gel (40 g SiO2, 10%, and 20% EtOAc/Hex) provided the title compound as a pale yellow foam.

Workup

concentrationthe reaction was concentrated under reduced pressure
customPurification of the residue by chromatography on silica gel (40 g SiO2, 10%, and 20% EtOAc/Hex)

Sources & evidence

ORD record: ord-75b42b5fddab4c8ab669a301c1833f1c
Source dataset: uspto-grants-2016_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09296736B2

Reaction notes

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