Potassium Carbonate → HCID 54375018, compound

HRID 24676Notes

Reaction equation

[CH3:1][O:2][C:3]1[CH:8]=[C:7]([CH2:9][O:10][Si:11]([C:24]([CH3:27])([CH3:26])[CH3:25])([C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)[C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[CH:6]=[C:5]([O:28][CH3:29])[C:4]=1B(O)O.[CH2:33]([O:35][C:36](=[O:57])[C@H:37]([CH2:49][C:50]1[CH:55]=[CH:54][C:53](Br)=[CH:52][CH:51]=1)[NH:38][C:39](=[O:48])[C:40]1[C:45]([Cl:46])=[CH:44][CH:43]=[CH:42][C:41]=1[Cl:47])[CH3:34].C([O-])([O-])=O.[K+].[K+]>COCCOC.O>[CH2:33]([O:35][C:36](=[O:57])[C@H:37]([CH2:49][C:50]1[CH:55]=[CH:54][C:53]([C:4]2[C:3]([O:2][CH3:1])=[CH:8][C:7]([CH2:9][O:10][Si:11]([C:24]([CH3:27])([CH3:25])[CH3:26])([C:12]3[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=3)[C:18]3[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=3)=[CH:6][C:5]=2[O:28][CH3:29])=[CH:52][CH:51]=1)[NH:38][C:39](=[O:48])[C:40]1[C:41]([Cl:47])=[CH:42][CH:43]=[CH:44][C:45]=1[Cl:46])[CH3:34]

Participants

Conditions

Temperature: 80 °C

Procedure

A mixture of 2,6-dimethoxy-4-[(t-butyldiphenylsilyloxy)methyl]benzeneboronic acid (5.2 g), N-(2,6-dichlorobenzoyl)-4-bromo-L-phenylalanine ethyl ester (1.71 g), Pd(Ph3)4 (0.44 g) and K2CO3 (1.59 g) in DME/H2O (20 mL/0.5 mL) was heated at 80° C. for 24 h under N2. The mixture was worked up and purified in a similar procedure as described in Example 8-3) to yield 2.9 g of N-(2,6-dichlorobenzoyl)-4-[2,6-dimethoxy-4-[(t-butyldiphenylsilyloxy)methyl]phenyl]-L-phenylalanine ethyl ester. ESMS: m/z 770 (MH+).

Workup

custompurified in a similar procedure

Sources & evidence

ORD record: ord-824d2a35964a4bd89f4153a27616c53e
Source dataset: uspto-grants-2005_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06855843B2

Reaction notes

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