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

HRID 216912Notes

Reaction equation

HRID 216912 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][C:14]([C:17]#[N:18])=[CH:13][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:12]=[CH:13][C:14]([C:17]#[N:18])=[CH:15][CH:16]=2)=[CH:7][CH:6]=1)#[N:1]

Participants

4

Reactant 2

HCID 2724994Methyl N-(triethylammoniosulfonyl)carbamate2×HCID 59568597(S)-tert-Butyl 4-(1-amino-3-(4'-cyanobiphenyl-4-yl)-1-oxopropan-2-ylcarbamoyl)tetrahydro-2H-pyran-4-ylcarbamate

Product 1

HCID 59568556(S)-tert-Butyl 4-(1-cyano-2-(4'-cyanobiphenyl-4-yl)ethylcarbamoyl)tetrahydro-2H-pyran-4-ylcarbamateYield 62.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

(S)-tert-Butyl 4-(1-amino-3-(4′-cyanobiphenyl-4-yl)-1-oxopropan-2-ylcarbamoyl)tetrahydro-2H-pyran-4-ylcarbamate (Example 3, step (iv), 0.70 g) in dichloromethane (15 mL) was treated with Burgess' reagent (0.356 g) and the mixture was stirred at room temperature for 6 h. Additional Burgess' reagent (0.15 g) was added and the reaction was stirred overnight. The mixture was absorbed onto silica and purified by chromatography on silica eluting with 33% ethyl acetate in isohexane and then 100% ethyl acetate to afford the sub-titled compound as a solid (0.420 g).

Workup

  1. stirringthe reaction was stirred overnight
  2. customThe mixture was absorbed onto silica
  3. custompurified by chromatography on silica eluting with 33% ethyl acetate in isohexane

Sources & evidence

ORD record
ord-1cc20313a10549d48e76ba2b7f716b52
Source dataset
uspto-grants-2012_06
Patent number
US08193239B2

Reaction notes

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