Methyl N-(triethylammoniosulfonyl)carbamate → (S)-tert-butyl 4-(1-cyano-2-(3'-cyanobiphenyl-4-yl)ethylcarbamoyl)tetrahydro-2H-pyran-4-ylcarbamate

HRID 216923Notes

Reaction equation

HRID 216923 reaction equation
[NH2:1][C:2](=O)[C@@H:3]([NH:19][C:20]([C:22]1([NH:28][C:29](=[O:35])[O:30][C:31]([CH3:34])([CH3:33])[CH3:32])[CH2:27][CH2:26][O:25][CH2:24][CH2:23]1)=[O:21])[CH2:4][C:5]1[CH:10]=[CH:9][C:8]([C:11]2[CH:16]=[CH:15][CH:14]=[C:13]([C:17]#[N:18])[CH:12]=2)=[CH:7][CH:6]=1.CC[N+](S(N=C(OC)[O-])(=O)=O)(CC)CC>ClCCl>[C:2]([C@@H:3]([NH:19][C:20]([C:22]1([NH:28][C:29](=[O:35])[O:30][C:31]([CH3:33])([CH3:32])[CH3:34])[CH2:27][CH2:26][O:25][CH2:24][CH2:23]1)=[O:21])[CH2:4][C:5]1[CH:10]=[CH:9][C:8]([C:11]2[CH:16]=[CH:15][CH:14]=[C:13]([C:17]#[N:18])[CH:12]=2)=[CH:7][CH:6]=1)#[N:1]

Participants

4

Reactant 2

HCID 2724994Methyl N-(triethylammoniosulfonyl)carbamateHCID 59568564(S)-tert-Butyl 4-(1-amino-3-(3'-cyanobiphenyl-4-yl)-1-oxopropan-2-ylcarbamoyl)tetrahydro-2H-pyran-4-ylcarbamate

Product 1

HCID 59568588(S)-tert-butyl 4-(1-cyano-2-(3'-cyanobiphenyl-4-yl)ethylcarbamoyl)tetrahydro-2H-pyran-4-ylcarbamateYield 92.6%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

(S)-tert-Butyl 4-(1-amino-3-(3′-cyanobiphenyl-4-yl)-1-oxopropan-2-ylcarbamoyl)tetrahydro-2H-pyran-4-ylcarbamate (Example 8, step (i), 316 mg) in dichloromethane (8 mL) was treated with Burgess' reagent (306 mg) and the mixture was stirred at room temperature for 18 h. The solvent was partially evaporated and the solution was purified by chromatography on silica using ethyl acetate/isohexane and then ethyl acetate as eluent to afford the sub-titled compound as a white solid (282 mg).

Workup

  1. customThe solvent was partially evaporated
  2. customthe solution was purified by chromatography on silica

Sources & evidence

ORD record
ord-bf4e9b47d2c7465fbbc95e5b1390c0c8
Source dataset
uspto-grants-2012_06
Patent number
US08193239B2

Reaction notes

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