Benzenesulfonyl chloride → Methyl 3-[N-(phenylsulfonyl)-3-(4-chlorobenzyl)-6-(quinolin-2-ylmethoxy)indol-2-yl]-2,2-dimethylpropanoate

HRID 1769368Notes

Reaction equation

HRID 1769368 reaction equation
[Cl:1][C:2]1[CH:37]=[CH:36][C:5]([CH2:6][C:7]2[C:15]3[C:10](=[CH:11][C:12]([O:16][CH2:17][C:18]4[CH:27]=[CH:26][C:25]5[C:20](=[CH:21][CH:22]=[CH:23][CH:24]=5)[N:19]=4)=[CH:13][CH:14]=3)[NH:9][C:8]=2[CH2:28][C:29]([CH3:35])([CH3:34])[C:30]([O:32][CH3:33])=[O:31])=[CH:4][CH:3]=1.C[Si](C)(C)N[Si](C)(C)C.[K].[C:48]1([S:54](Cl)(=[O:56])=[O:55])[CH:53]=[CH:52][CH:51]=[CH:50][CH:49]=1>C1COCC1.CN(P(N(C)C)(N(C)C)=O)C.C1(C)C=CC=CC=1>[C:48]1([S:54]([N:9]2[C:10]3[C:15](=[CH:14][CH:13]=[C:12]([O:16][CH2:17][C:18]4[CH:27]=[CH:26][C:25]5[C:20](=[CH:21][CH:22]=[CH:23][CH:24]=5)[N:19]=4)[CH:11]=3)[C:7]([CH2:6][C:5]3[CH:4]=[CH:3][C:2]([Cl:1])=[CH:37][CH:36]=3)=[C:8]2[CH2:28][C:29]([CH3:34])([CH3:35])[C:30]([O:32][CH3:33])=[O:31])(=[O:56])=[O:55])[CH:53]=[CH:52][CH:51]=[CH:50][CH:49]=1

Participants

7

Reactant 3

HCID 7369Benzenesulfonyl chlorideHCID 18947534Methyl 3-[3-(4-chlorobenzyl)-6-(quinolin-2-ylmethoxy)indol-2-yl]-2,2-dimethylpropanoateHCID 45051783Silanamine, 1,1,1-trimethyl-N-(trimethylsilyl)-, potassium salt

Product 1

HCID 18947579Methyl 3-[N-(phenylsulfonyl)-3-(4-chlorobenzyl)-6-(quinolin-2-ylmethoxy)indol-2-yl]-2,2-dimethylpropanoate

Reagents, catalysts & solvents 3

HCID 1140TolueneSolventHCID 8028TetrahydrofuranSolventHCID 12679HexamethylphosphoramideSolvent

Conditions

Temperature
-78 °C

Procedure

To a solution of methyl 3-[3-(4-chlorobenzyl)-6-(quinolin-2-ylmethoxy)indol-2-yl]-2,2-dimethylpropanoate (Step D, Example 37) (208 mg) in dry THF (5 mL) and HMPA (0.5 mL) at -78° C. was added 0.58M potassium hexamethyldisilazane in toluene (0.77 mL) and the solution then stirred at -78° C. for 15 minutes. Then freshly distilled benzenesulfonyl chloride (0.062 mL) was added and stirred at -78° C. for 2.5 hours. The reaction mixture was quenched with 25% aq. NH4OAc, extracted with EtOAc, dried over Na2SO4 and evaporated to give crude product. Chromatography of the residue in a column of flash silica gel (eluting with EtOAc-hexane 25:75) afforded the title product as an oil.

Workup

  1. stirringstirred at -78° C. for 2.5 hours
  2. customThe reaction mixture was quenched with 25% aq. NH4OAc
  3. extractionextracted with EtOAc
  4. dry with materialdried over Na2SO4
  5. customevaporated
  6. customto give crude product

Sources & evidence

ORD record
ord-2c3cf734cc2946598ed2a6bd60e761f3
Source dataset
uspto-grants-1995_01
Patent number
US05380850

Reaction notes

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