Potassium Phosphate, Tribasic → [5-(4-{1-ethyl-1-[4-((E)-3-ethyl-3-hydroxy-1-pentenyl)-3-methyl-phenyl]-propyl}-2-methyl-phenyl)-pyridin-3-yl]-acetic Acid Methyl Ester

HRID 546959Notes

Reaction equation

[CH2:1]([C:3]([OH:36])([CH2:34][CH3:35])/[CH:4]=[CH:5]/[C:6]1[CH:11]=[CH:10][C:9]([C:12]([CH2:31][CH3:32])([C:15]2[CH:20]=[CH:19][C:18](B3OC(C)(C)C(C)(C)O3)=[C:17]([CH3:30])[CH:16]=2)[CH2:13][CH3:14])=[CH:8][C:7]=1[CH3:33])[CH3:2].[CH3:37][O:38][C:39](=[O:48])[CH2:40][C:41]1[CH:42]=[N:43][CH:44]=[C:45](Br)[CH:46]=1.P([O-])([O-])([O-])=O.[K+].[K+].[K+]>CN(C)C=O>[CH3:37][O:38][C:39](=[O:48])[CH2:40][C:41]1[CH:42]=[N:43][CH:44]=[C:45]([C:18]2[CH:19]=[CH:20][C:15]([C:12]([CH2:13][CH3:14])([C:9]3[CH:10]=[CH:11][C:6](/[CH:5]=[CH:4]/[C:3]([CH2:34][CH3:35])([OH:36])[CH2:1][CH3:2])=[C:7]([CH3:33])[CH:8]=3)[CH2:31][CH3:32])=[CH:16][C:17]=2[CH3:30])[CH:46]=1

Participants

Conditions

Temperature: 140 °C

Procedure

A solution of (E)-3-ethyl-1-(4-{1-ethyl-1-[3-methyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-propyl}-2-methyl-phenyl)-1-penten-3-ol (Example 28; 49.3 mg, 0.1 mmol), (5-bromo-pyridin-3-yl)acetic acid methyl ester (Example 24-(2); 34.7 mg, 0.15 mmol), tetrakistriphenylphosphine palladium (16.2 mg, 0.014 mmol) and potassium phosphate (31.9 mg, 0.15 mmol) in N,N-dimethylformamide (0.27 mL) was stirred with microwave heating at 140° C. for 10 minutes. The reaction mixture was filtered through cotton plug, and the mixture was purified by silica gel chromatography (40% ethyl acetate/hexane) to give the title compound (37.1 mg, 71%).

Workup

filtrationThe reaction mixture was filtered through cotton plug
customthe mixture was purified by silica gel chromatography (40% ethyl acetate/hexane)

Sources & evidence

ORD record: ord-a4babe412459487eb87c1d39c6f21aa1
Source dataset: uspto-grants-2011_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07935688B2

Reaction notes

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