Toluene → (2,2-Difluoro-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(5-methylthiophen-2-yl)methanone trifluoroacetate

HRID 471052Notes

Reaction equation

HRID 471052 reaction equation
[F:1][C:2]([F:7])([F:6])[C:3]([OH:5])=[O:4].[F:8][C:9]1([F:35])[CH2:14][N:13]([C:15]([C:17]2[S:18][C:19]([CH3:22])=[CH:20][CH:21]=2)=[O:16])[CH2:12][C:11]2([CH2:27][CH2:26][N:25](C(OC(C)(C)C)=O)[CH2:24][CH2:23]2)[O:10]1.C1(C)C=CC=CC=1>ClCCl>[F:1][C:2]([F:7])([F:6])[C:3]([OH:5])=[O:4].[F:35][C:9]1([F:8])[CH2:14][N:13]([C:15]([C:17]2[S:18][C:19]([CH3:22])=[CH:20][CH:21]=2)=[O:16])[CH2:12][C:11]2([CH2:23][CH2:24][NH:25][CH2:26][CH2:27]2)[O:10]1

Participants

5

Reactant 3

HCID 1140TolueneHCID 6422Trifluoroacetic acidHCID 57989071Tert-butyl 2,2-difluoro-4-(5-methylthiophene-2-carbonyl)-1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate

Product 1

HCID 67291912(2,2-Difluoro-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(5-methylthiophen-2-yl)methanone trifluoroacetate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Trifluoroacetic acid (5 mL) was added to a solution of tert-butyl 2,2-difluoro-4-(5-methylthiophene-2-carbonyl)-1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate (example 37, step d) (0.4 g) in dichloromethane (20 mL) at 20° C. The solution was allowed to stand at 20° C. for 25 minutes. Toluene (40 mL) was added and the solvents were removed under reduced pressure. The residue was evaporated down twice with acetonitrile. The resultant gum was triturated with ether to afford the subtitled compound. Yield 0.39 g.

Workup

  1. customthe solvents were removed under reduced pressure
  2. customThe residue was evaporated down twice with acetonitrile
  3. customThe resultant gum was triturated with ether

Sources & evidence

ORD record
ord-561b327dd96a4689adf60e0ef719b103
Source dataset
uspto-grants-2014_01
Patent number
US08629271B2

Reaction notes

Loading…