Water → 2-Amino-6-(1-ethoxyvinyl)-N-(5-phenoxy-thiophen-2-ylmethyl)-nicotinamide

HRID 2079973Notes

Reaction equation

[CH2:1]([O:3][C:4]([Sn](CCCC)(CCCC)CCCC)=[CH2:5])[CH3:2].[NH2:19][C:20]1[N:41]=[C:40](Cl)[CH:39]=[CH:38][C:21]=1[C:22]([NH:24][CH2:25][C:26]1[S:27][C:28]([O:31][C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)=[CH:29][CH:30]=1)=[O:23].C1(C)C(C)=CC=CC=1.O>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C(OCC)(=O)C>[NH2:19][C:20]1[N:41]=[C:40]([C:4]([O:3][CH2:1][CH3:2])=[CH2:5])[CH:39]=[CH:38][C:21]=1[C:22]([NH:24][CH2:25][C:26]1[S:27][C:28]([O:31][C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)=[CH:29][CH:30]=1)=[O:23]

Participants

Conditions

Temperature: 130 °C

Procedure

1-Ethoxyvinyl(tri-n-butyl)tin (0.47 mL, 1.4 mmol) was added to a mixture of 2-amino-6-chloro-N-(5-phenoxy-thiophen-2-ylmethyl)-nicotinamide (170 mg, 0.46 mmol) described in Preparation Example A+-11, tetrakis(triphenylphosphine)palladium(0) (54 mg, 0.046 mmol) and xylene (5 mL), and the solution was stirred for 2.5 hours at 130° C. After cooling, water and ethyl acetate were added to the reaction solution for extraction, and the solution was washed with brine. The solvent was evaporated in vacuo, then, the residue was purified by NH silica gel column chromatography (hexane:ethyl acetate=2:1), and the title compound (150 mg, 0.38 mmol, 82%) was obtained as a pale yellow solid.

Workup

temperatureAfter cooling
washthe solution was washed with brine
customThe solvent was evaporated in vacuo
customthe residue was purified by NH silica gel column chromatography (hexane:ethyl acetate=2:1)

Sources & evidence

ORD record: ord-4953d15a6a11419ea17fd687216582df
Source dataset: uspto-grants-2011_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07932272B2

Reaction notes

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