Trimethylsilylacetylene → HCID 57800198, compound

HRID 913432Notes

Reaction equation

HRID 913432 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9](=[O:14])[C:10]([CH3:13])([CH3:12])[CH3:11])=[C:4](I)[C:3]=1[C:16]([F:19])([F:18])[F:17].[Si:20]([C:24]#[CH:25])([CH3:23])([CH3:22])[CH3:21]>[Cu](I)I.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.C(N(CC)CC)C>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9](=[O:14])[C:10]([CH3:13])([CH3:12])[CH3:11])=[C:4]([C:25]#[C:24][Si:20]([CH3:23])([CH3:22])[CH3:21])[C:3]=1[C:16]([F:19])([F:18])[F:17]

Participants

6

Reactant 2

HCID 66111TrimethylsilylacetyleneHCID 57800179HCID 57800179, compound

Product 1

HCID 57800198HCID 57800198, compound

Reagents, catalysts & solvents 3

HCID 83717Copper iodideCatalystHCID 178418476HCID 178418476, compoundCatalystHCID 8471TriethylamineSolvent

Conditions

Temperature
50 °C

Procedure

A triethylamine (2.2 mL) solution of N-[4-chloro-2-iodo-3-(trifluoromethyl)phenyl]-2,2-dimethylpropanamide (0.413 g, 1.02 mmol) was treated with TMS acetylene (0.158 mL, 1.12 mmol) followed by copper iodide (0.019 g, 0.102 mmol) and PdCl2(PPh3)2 (0.021 g, 0.031 mmol). The reaction vessel was purged with N2, sealed and heated to 50° C. for 14 h. TLC at this time showed excellent conversion to the desired product. The cooled mixture was filtered through a plug of celite and partitioned between EtOAc (10 mL) and H2O (10 mL). The organic portion was dried (Na2SO4), filtered, and concentrated. Column chromatography (SiO2, EtOAc/hexanes) affored the title compound as a light brown solid: 1H NMR (CDCl3) δ 8.72 (bs, 1H), 8.64 (d, J=6.0 Hz, 1H), 7.41 (d, J=6.0 Hz, 1H), 1.34 (s, 9H), 0.29 (s, 9H).

Workup

  1. customThe reaction vessel was purged with N2
  2. customsealed
  3. filtrationThe cooled mixture was filtered through a plug of celite
  4. custompartitioned between EtOAc (10 mL) and H2O (10 mL)
  5. dry with materialThe organic portion was dried (Na2SO4)
  6. filtrationfiltered
  7. concentrationconcentrated

Sources & evidence

ORD record
ord-b1b9487236d445e2807ada6cdfd5ca0c
Source dataset
uspto-grants-2011_09
Patent number
US08026262B2

Reaction notes

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