(2R)-2-hydroxypropanamide → HCID 178471802, compound

HRID 712032Notes

Reaction equation

HRID 712032 reaction equation
[OH:1][C@H:2]([CH3:6])[C:3]([NH2:5])=O.F[B-](F)(F)F.C([O+](CC)CC)C.N[C:20]1[C:21]([NH:29][C@H:30]2[CH2:35][CH2:34][C@H:33]([CH2:36][C:37]([O:39][CH2:40][CH3:41])=[O:38])[CH2:32][CH2:31]2)=[C:22]2[S:28][CH:27]=[CH:26][C:23]2=[N:24][CH:25]=1>O1CCCC1.C(O)C>[OH:1][C@@H:2]([C:3]1[N:29]([C@H:30]2[CH2:31][CH2:32][C@H:33]([CH2:36][C:37]([O:39][CH2:40][CH3:41])=[O:38])[CH2:34][CH2:35]2)[C:21]2=[C:22]3[S:28][CH:27]=[CH:26][C:23]3=[N:24][CH:25]=[C:20]2[N:5]=1)[CH3:6]

Participants

6

Reactant 3

HCID 1530236(2R)-2-hydroxypropanamideHCID 2723982Triethyloxonium tetrafluoroborateHCID 178471803HCID 178471803, compound

Product 1

HCID 178471802HCID 178471802, compoundYield 86%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

A mixture of (2R)-2-hydroxypropanamide (170 mg, 1.9 mmol) and triethyloxonium tetrafluoroborate (0.36 g, 1.9 mmol) in tetrahydrofuran (2 mL) was stirred at room temperature for 1 h and then concentrated. A mixture of ethyl {trans-4-[(6-aminothieno[3,2-b]pyridin-7-yl)amino]cyclohexyl}acetate (150 mg, 0.45 mmol) and the above made reagent in ethanol (4.8 mL) was heated at reflux for 2 h. The mixture was concentrated and purified on silica gel column (eluting with 0-5% MeOH in methylene chloride) to give the desired product (0.15 g, 86%). LCMS calculated for C20H26N3O3S (M+H)+: m/z=388.2. Found: 388.1.

Workup

  1. concentrationconcentrated
  2. temperatureat reflux for 2 h
  3. concentrationThe mixture was concentrated
  4. custompurified on silica gel column (eluting with 0-5% MeOH in methylene chloride)

Sources & evidence

ORD record
ord-6208681d2e784968bb5f63a8d0452ed1
Source dataset
uspto-grants-2015_11
Patent number
US09181271B2

Reaction notes

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