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Iodobenzene → 4-methoxy-N-phenylbenzo[d]thiazol-2-amine

HRID 62
Notes
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Reaction equation

HRID 62 reaction equation
COc1cccc2sc(N)nc12.Ic1ccccc1>CC(C)(C)[O-].CC1(C)c2cccc(P(c3ccccc3)c3ccccc3)c2Oc2c(P(c3ccccc3)c3ccccc3)cccc21.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]>COc1cccc2sc(Nc3ccccc3)nc12
ParticipantsConditionsProcedureSources & evidenceReaction notes

Participants

7

Reactant 2

HCID 11575IodobenzeneHCID 216224-Methoxy-2-aminobenzothiazole

Product 1

HCID 70863384-methoxy-N-phenylbenzo[d]thiazol-2-amineYield 15.22%

Reagents, catalysts & solvents 4

HCID 23676156Sodium t-butoxideReagentHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)
Catalyst
HCID 9811564Bis(dibenzylideneacetone)palladiumCatalyst
HCID 1140TolueneSolvent

Conditions

Temperature
90 °C

Procedure

4-methoxybenzo[d]thiazol-2-amine (0.216 g, 1.20 mmol), iodobenzene (0.112 mL, 1.00 mmol), XANTPHOS (0.058 g, 0.10 mmol), Pd2(dba)3 (0.027 g, 0.03 mmol) and SODIUM TERT-BUTOXIDE (0.192 g, 2.00 mmol) placed in a sealed reaction via under an atmosphere of nitrogen and heated at 90ºC for 1 hour. LC/MS indicated mainly product, little SM. Cooled, diluted DCM and washed with water and brine. Org phase dried/MgSO4, filtered and evaporated. The crude product was purified by flash silica chromatography, eluting with dichloromethane. Pure fractions were evaporated to dryness to afford 4-methoxy-N- phenylbenzo[d]thiazol-2-amine (0.039 g, 15.22 %) as an colorless solid. EN01327-44-1 (0.039 g, 0.15 mmol, 15.22 %) Not sure why yield so low, crude lc/ms looked fine. Reaction left for several days before working up.

Sources & evidence

ORD record
ord-0eb7fc5c164b43bc9a05a46e98a37b12
Source dataset
750 AstraZeneca ELN dataset
Original link
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Reaction notes

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On this pageParticipantsConditionsProcedureSources & evidenceReaction notes