Reaction equation
Brc1cccc(OCc2ccccc2)c1.Cc1cc2ccc(OC(F)(F)F)cc2[nH]1>CC(C)(C)P(c1ccccc1-c1ccccc1)C(C)(C)C.CC(C)(C)[O-].Cc1ccccc1.O=C(/C=C/c1ccccc1)/C=C/c1ccccc1.O=C(/C=C/c1ccccc1)/C=C/c1ccccc1.O=C(/C=C/c1ccccc1)/C=C/c1ccccc1.[Na+].[Pd].[Pd]>Cc1cc2ccc(OC(F)(F)F)cc2n1-c1cccc(OCc2ccccc2)c1Participants
Reactant 2
Product 1
Reagents, catalysts & solvents 4
Conditions
- Temperature
- 80 °C
Procedure
EN04773-54, _Buchwald coupling, toluene and bromide_ The indole from 4773-41, 1-(benzyloxy)-3-bromobenzene,Pd2(dba)3 (5mol%), JohnPhos (10mol%) and KOtBu (1.4eq) were dissolved in toluene. The mixture was warmed at 80 °C for 40 hours.* The reaction was carefully monitored and analysis data from 2h, 4, 16 and 40 h are attached. According to LCMS there were ca 75% conversion to the product. The mixture was washed with water, concentrtaed and purified by silica column (Hep/EtOAc 6:1). The collected fractions contained product (6 g, 62.5% yield) but had some impurity (see TLC and NMR). Nevertheless Friedel crafts acylation was performed without further purifications. See e.g. 4773-56. ### *JohnPhos, pd2(dba)3 and sodium tertbutoxide had been dissolved in toluene and was portionwise added to the reaction mixture during the first 16h.
Sources & evidence
- ORD record
- ord-f89f3a46444e42c0973a5acc34e50e60
- Source dataset
- 750 AstraZeneca ELN dataset
- Original link
- View source
Linked notes
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