Triphenylphosphine → (R)-3-((R)-2-Cyclopentyl-2-hydroxy-2-phenylacetoxy)pyrrolidine-1-carboxylic acid t-butyl ester

HRID 2196046Notes

Reaction equation

HRID 2196046 reaction equation
N(C(OC(C)C)=O)=NC(OC(C)C)=O.[CH:15]1([C@@:20]([OH:30])([C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[C:21]([OH:23])=[O:22])[CH2:19][CH2:18][CH2:17][CH2:16]1.[C:31]([O:35][C:36]([N:38]1[CH2:42][CH2:41][C@@H:40](O)[CH2:39]1)=[O:37])([CH3:34])([CH3:33])[CH3:32].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C1COCC1>[C:31]([O:35][C:36]([N:38]1[CH2:42][CH2:41][C@@H:40]([O:22][C:21](=[O:23])[C@:20]([CH:15]2[CH2:19][CH2:18][CH2:17][CH2:16]2)([OH:30])[C:24]2[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=2)[CH2:39]1)=[O:37])([CH3:34])([CH3:32])[CH3:33]

Participants

6

Reactant 4

HCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 948620alpha-Cyclopentylmandelic acid, (+)-HCID 6544479tert-Butyl (3R)-3-hydroxypyrrolidine-1-carboxylate

Product 1

HCID 57613514(R)-3-((R)-2-Cyclopentyl-2-hydroxy-2-phenylacetoxy)pyrrolidine-1-carboxylic acid t-butyl ester

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

At room temperature, diisopropyl azodicarboxylate (980 μl, 5 mmol) was slowly added to a mixture of (R)-cyclopentylhydroxyphenylacetic acid (1.1 g, 5 mmol), (R)-3-hydroxypyrrolidine-1-carboxylic acid t-butyl ester (1.0 g, 5.5 mmol), and triphenyl-phosphine (1.3 g, 5 mmol) in 10 ml of THF. The reaction mixture was then stirred at room temperature overnight.

Sources & evidence

ORD record
ord-541b15bfbb1547c29ad8b8261c4c1e46
Source dataset
uspto-grants-2012_12
Patent number
US08338424B2

Reaction notes

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