Diisopropylethylamine → HCID 57504740, compound

HRID 1098278Notes

Reaction equation

HRID 1098278 reaction equation
[C:1]([Si:5](Cl)([C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)[C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1)([CH3:4])([CH3:3])[CH3:2].[OH:19][CH2:20][CH:21]1[CH2:24][N:23]([C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26])[CH2:22]1.C(N(C(C)C)C(C)C)C>C(Cl)Cl.CN(C)C1C=CN=CC=1>[Si:5]([O:19][CH2:20][CH:21]1[CH2:24][N:23]([C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26])[CH2:22]1)([C:1]([CH3:4])([CH3:3])[CH3:2])([C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)[C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1

Participants

6

Reactant 3

HCID 81531DiisopropylethylamineHCID 94078tert-ButyldiphenylchlorosilaneHCID 10583745tert-Butyl 3-(hydroxymethyl)azetidine-1-carboxylate

Product 1

HCID 57504740HCID 57504740, compound

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent2×

Procedure

A solution of tert-butylchlorodiphenylsilane (5.56 mL, 21.36 mmol) in DCM (20 mL) was added dropwise to a stirred solution of tert-butyl 3-(hydroxymethyl)azetidine-1-carboxylate (CAS no. 142253-56-3) (4.0 g, 21 mmol) and anhydrous N-ethyl-N-isopropylpropan-2-amine (9.1 mL, 53 mmol) in DCM (45 mL) cooled to 10° C., over a period of 2 minutes under nitrogen. The resulting solution was stirred at ambient temperature for 3 hours 4-dimethylaminopyridine (100 mg) was added and the reaction was left overnight. The reaction mixture was concentrated and diluted with EtOAc (75 mL), and washed sequentially with saturated NaHCO3 (25 mL), water (20 mL) and saturated brine (20 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford the crude product (9.87 g) which was used without further purification.

Workup

  1. additionwas added
  2. concentrationThe reaction mixture was concentrated
  3. additiondiluted with EtOAc (75 mL)
  4. washwashed sequentially with saturated NaHCO3 (25 mL), water (20 mL) and saturated brine (20 mL)
  5. dry with materialThe organic layer was dried over MgSO4
  6. filtrationfiltered
  7. customevaporated

Sources & evidence

ORD record
ord-53906ffdfca44b679c2c6a8e881d10b3
Source dataset
uspto-grants-2012_03
Patent number
US08143263B2

Reaction notes

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